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SEED PRODUCTION TECHNOLOGY IN PEARL MILLET
SUBMITTED BY
PARMAR SNEHA J
GENETICS AND PLANT
BREEDING
REG. NO.: 2010122045
SUBMITTED TO
DR. J. N. PATEL SIR
BIDI TOBACCCO RESEARCH
STATION, ANAND
Bajra Seeds
P. purpureum - Elephant grass
P. glaucum – Pearl millet
INTRODUCTION
Bajra is one of the most important cereals in the arid and semi-arid
ecosystems in India.
It is annually grown on more than 30 m ha in the arid and semi-arid
tropical regions ofAsia,Africa and LatinAmerica.
India is the largest grower (9.3 m ha) and producer (9.0 m ton)
among pearl millet growing countries.
Pearl millet holds significant economic importance in India as it is
an important source of food and fodder for poor farmers in the arid
and semi-arid regions of the country.
The major pearl millet growing states in India are Rajasthan,
Maharashtra, Gujarat, Uttar Pradesh and Haryana, which together
account for more than 90% of pearl millet acreage in the country.
Botanical name : Pennisetum glaucum L.
Family
Origin
chromosome
number
: Poaceae
:Africa
: 2n=2x=14
FLORAL
STRUCTURE
Pollination Behaviour & Floral biology
The flowers are protogynous that facilitates cross pollination
through wind-mediated pollen movement.
Pearl millet is a highly cross-pollinated crop.
Pearl millet inflorescence is a false spike, with the panicle size in
commercial cultivars ranging generally from 20 to 40 cm in length
and 3 to 5 cm in diameter.
The panicle is terminal, varying in shape from cylindrical to candle-
shaped.
The spike consists of a central rachis which is closely packed with
fascicles.
Each fascicle consists of one or more spikelets.An inflorescence
contains, on an average, 1600 spikelets.
• The spikelets are small, lanceolate, and acute.
• Each spikelet consists of two glumes, one outer and
one inner.
• Between the two glumes, there are two florets.
• The lower floret is staminate and the upper floret
is hermaphrodite.
• The staminate flower has one lemma and one palea, and
enclosed between them is the androecium with three
stamens.
• The upper hermaphrodite floret has a broad, pointed
lemma and a thin, oval palea, and the androecium and
gynoecium are enclosed between them.
• The pearl millet androecium consists of three anthers, each
attached to a long filament.
• The gynoecium consists of a monocarpellary and superior
ovary with two styles and a feathery stigma.
• Anthesis continues throughout the day.
• Protogyny is expressed in varying degrees in pearl millet,
depending on the genotype and the environment.
• Seed-set can be seen in the panicle about a week after fertilization.
• There is a gradual increase in the dry mass of grains from the milk
• to dough stage, reaching maximum at physiological maturity.
• At physiological maturity, the seed contains 30% moisture.
Method of seed production
The CGMS system provides a genetic mechanism to produce pure single-cross hybrid
seed on a commercial scale from cross betweenA-line and R-line under open pollination
in isolation (Fig. 5). The counterparts of A-lines with same nuclear gene constitution but
fertile cytoplasm are maintainer lines, commonly referred to as B-lines.
OPVs are random mating populations. These are maintained and multiplied by
random mating their representative bulk in isolation
SEED PRODUCTION TECHNOLOGY
Selection of site
• Any pearl millet or its wild relative should not have been
cultivated/grown during the previous season on the plot selected for
seed production (and preferably within the prescribed limit of
isolation distance, especially for nucleus and breeder seeds).
• It thrives best in black cotton soils and sandy loam soils.
• Production site should have adequate irrigation with proper drainage
and good fertility level.
• The soil of the selected plots should be comparatively free from soil
borne diseases and pests.
• The plots should be free from volunteer plants, weeds and other crop
plants.
• The plot must be levelled and should have adequate isolation as per
the requirement of certification standards.
ISOLATION DISTANCE
• As pearl millet is a highly cross pollinated crop-
recommended isolation distance should be followed strictly.
• The seed crop must be sufficiently isolated from nearby fields of
the same crop as per the requirements of certification standards.
• Seed village approach is commonly followed for certified
seed production to avoid isolation problem.
• Even after the seed crop is harvested, effective isolation of
seed from different varieties is essential to avoid mechanical
contamination.
Minimum isolation distance
(m)
Foundation/
Breeder seed
Certified seed
Hybrid
parents
OPV Hybrids OPV
Fields of other hybrids/ varieties 1000 400 200 200
Fields of the same hybrid/variety not
conforming to varietal purity
requirements for certification
1000 400 200 200
Fields of other hybrids having common
male parent but not conforming to
varietal purity requirements for
certification
- NA 200 NA
Fields of other hybrids having common
male parent and conforming to varietal
purity requirements for certification
- NA 5 NA
Crop management:
A.Land preparation: Cultivation of field two times (cross
ploughing) and harrowing once is sufficient to bring field to fine tilth.
Use of plank tied behind the cultivator may be necessary to break
large clods and more harrows may be required in case of fields
infested with weeds.
B.Planting method: Planting is done either by direct sowing of seed
or transplanting the seedlings raised in nursery.
•Direct-sowing: Generally, tractor or bullock-drawn seed drills or
bullock plough are used for sowing. A-lines are planted by machine-
drawn seed drill and R-lines are planted manually by hand dibbling in
rows marked with stakes. Sowing equipment needs to be thoroughly
cleaned to avoid contamination during sowing.
Transplanting
• Transplanting enables easy adjustment in flowering time of parental
lines in case they have large differences for flowering time.
• Transplanting saves expenditure on weeding and irrigation. It also
saves time when field is occupied with any other crop.
• Transplanting requires 30-40% less seed than direct sowing
and proper plant stand is achieved with required spacing.
• The parents of hybrid are sown in a nursery bed raised 10 cm above
the ground level.
• Seed should be sown 2.5 cm deep to facilitate better germination and
safe uprooting of seedlings for transplanting.
• Seed is sown in rows spaced 10-15 cm apart. Seedlings are
transplanted in the field when they are 18-20 days old.
• Transplanting of seedlings older than 20 days might result in
reduced tillering and low seed yield.
• Field layout and planting ratio:
• Ratio of male and female lines depends on height and
pollen producing ability of pollinator line.
• Standard female : male row ratio of either 4:1 or 8:2 is
followed for certified seed production.
• Most common ratio is 8:2 due to ease of management.
• All sides of field should be covered with 2-4 rows of male line.
Seed rate:
• The seed rate depends on planting method and row-to-row and plant-
to plant spacing.
• For open pollinated varieties
Direct seeding - 3.5-5 kg/ha
Transplanting - 1.5 kg/ha
For hybrids
Female parent Male parent
(lineA) (line B)
Direct seedling 1.5 Kg 0.75 Kg
Transplanting 400-425 g 200-300 g
Sowing time:
• Date of sowing within the window impacts the yields.
• Sowing date optimization therefore, is a critical requirement for
yield maximization.
• Optimum sowing time is site dependent and therefore, would
require conducting pilot experiments in every new
geography before undertaking large scale seed production
activity.
• Kharif – 2nd fortnight of July
• Rabi – mid October to mid December
SEED SOURCE : Obtain seed of any category from a source
approved by the certification agency.
SPACING:
• Optimum population is 1,00,000 plants per hectare and hence it
is recommended to follow 50 cm row-to-row and 20 cm plant-to-
plant spacing in certified seed production.
• However, in nucleus and breeder seed production row-to row
spacing of 75 cm and plant-to-plant spacing of 20-25 cm is
followed to facilitate closer look at individual plants in order to
identify and rogue out off-types, including pollen shedders in
A- lines.
• Such spacing also allows better expression of plants and
facilitates roguing of extreme phenotypes in OPVs.
V
ARIETIES
Hybrids:
OTHER:
Giant Bajra, CO-8, Proagro No. 1 (FMH-3), VBH-4,
NBH-149, MP-204, MP-205.
Raj Bajra Chari-2, TNSC-1,APFB-2, GFB-1, PCB-
164, FBC-16,Avika Bajra Chari (AVKB-19),
Narendra Chara Bajra-2 (NDFB- 2)
GUJARAT
GHB 577, GHB 526, PB 172 ,PB 112, JBV 2,
HC 20.
Fertilizer management:
• Adequate amount of nitrogen, phosphorus and potassium
is essential for proper growth and development of the
crop.
• It is recommended to apply FYM @ 8-10 tons/ha and NPK @
100:60:40 kg/ha.
• Basal dose of 40 kg N/ha is applied, and remaining nitrogen
should be applied at tillering stage.
• Soils should also be analyzed for micronutrients, especially
zinc, sulfur and boron, and those found deficient should be
amended through proper micronutrient management.
Water management:
• Most of pearl millet seed production is taken during off
season (January to April) which is rain-free period.
• The most critical stages of irrigation are tillering, flowering
and seed development.
• The frequency of irrigation and amount of water supplied
depend upon physical texture of the soil and crop requirements.
• If rains are not adequate 1-2 irrigations are needed.
• Adequate soil moisture is also necessary for uniform seed
germination in order to obtain good plant stand and high seed
yields.
Precautions:
• Excessive moisture conditions and prolonged drought should
be avoided during seed production.
• The irrigation should be stopped at hard dough stage or about 10-
12 days before harvesting time to ensure dried conditions for
harvesting.
Weed control:
• Production of high seed yield of high quality requires good
weed control in the seed production plots.
• Effective control of weeds at all the phases of crop growth
is essential.
• Weeds must not be allowed to flower or set seed in any case.
• Hand weeding, intercultural operations or chemical is necessary
to
• control weeds.
• Preemergence spray ofAtrazine @ 1g/litre controls broad-
leaf weeds effectively.
• Manual or machine operated weeder should be used before and
• after earthing up.
 Roguing:
• Remove pollen shedders fromA-lines and off-types from
parental lines in seed production field.
• Pollen shedders are male fertile plants in anA-line with
similar morphology.
• Pollen shedders inA-line are results of mutations or
mechanical mixtures.
• Off-types are the plants distinctly different in morphological
characteristics from those with typical characteristics of the
line under production.
• The off-type plants may arise through mechanical mixture or out
• crossing and rarely as mutants.
• Adequate and timely rouging constitutes the most
important operation in seed production.
HARVESTING AND DRYING: Fully mature seed is easily
harvested and cleaned with minimal harvest losses. Delayed
harvesting may result in increased losses due to lodging and seed
shattering. Sun drying of seeds on clean threshing floor may be
necessary to reduce moisture content, preserve viability and vigour
and improve storage quality. Drying of seed to recommended
moisture level of 12% is necessary to preserve its viability and
vigour.
SEED YIELD: 3200 - 3250 kg / ha
• In case of pollen shedders, the best time for rouging is morning
hours when theA-line will have least of the exposure to
outcrossing and there is little wind movement.
Precautions:
• Pollen shedders should be removed before anther dehiscence.
Removal of pollen shedders should be first in the morning activity
and is the important aspect of quality seed production.
• Off-type plants obviously differing in characteristics such as height,
flowering time, colour of foliage, leaf size, shape, and orientation,
tillering, panicle size, or any other morphological characteristic and
diseased plants should be removed before flowering.
• Roguing and sorting out of harvested panicles may be necessary in
case of diseased panicles.
Precautions:
• In case of certified seed production, R-line should be harvested first.
• Field should be thoroughly checked before harvestingA- line to
avoid mixture.
• Ensure that the drying yard is clean and free from any pearl millet or
other crop seed.
• Avoid making big heap at high moisture as it may deteriorate seed
vigour.
• Panicles should be dried to 12% moisture level.
• Harvested material should be double checked properly.
THRESHING:
• Care must be taken during threshing operations to avoid
any chance of mechanical mixture.
• Threshing should be done lot wise.
• Checking and cleaning of threshers before use is a must to
keep seed free from other seeds.
• Seeds should be cleaned before dispatching to processing plant
by winnowing /using screens to remove chaffy /unwanted
materials.
Indian minimum seed certification standards
Field Inspection A minimum of three inspections shall be
made as follows:
(1) The first inspection shall be made before flowering preferably
within 30 days after planting to determine isolation, volunteer
plants, off-types, downy mildew incidence and other relevant
factors;
(2) The second inspections shall be made during 50% flowering to
check isolation, off-types, downy mildew/green ear (Sclerospora
graminicola (Sacc.) Schroet).
(3) The third inspection shall be made at maturity and prior to
harvesting and in order to determine the incidence of downy
mildew/green ear disease, ergot, grain smut and to verify true
nature of plant and other relevant factors.
Seed Standards
Factor Standards for each class
Foundation Certified
Pure seed (minimum) 98.0% 98.0%
Inert matter (maximum) 2.0% 2.0%
Other crop seeds (maximum) 10/kg 20/kg
Weed seeds (maximum) 10/kg 20/kg
Ergot sclerotia, seed entirely or partially 0.020%(by 0.040% (by
modified as sclerotia, broken sclerotia, or number) number)
ergotted seed (maximum)
Germination (minimum) 75% 75%
Moisture (maximum) 12.0% 12.0%
For vapour-proof containers (maximum) 8.0% 8.0%
Summary
• scientific name : pannisetum gaucum
• family : poaeceae
• origin: Africa
• chromosome number:2n=2x=14
• India is the largest grower (9.3 m ha) and producer (9.0 m ton)
among pearl millet growing countries.
• Pearl millet inflorescence is a false spike, with the panicle
size in commercial cultivars ranging generally from 20 to
40 cm in length and 3 to 5 cm in diameter.
• The pearl millet androecium consists of three anthers, each
attached to a long filament.
• The gynoecium consists of a monocarpellary and superior
ovary with two styles and a feathery stigma.
• Anthesis continues throughout the day.
• seed rate
• Direct seeding-3.5-5 kg/ha
• Transplanting-1.5 kg/ha
• sowing time
• Kharif – 2nd fortnight of July Rabi – mid October to mid December
• spacing - 75 x 25
• GHB 577, GHB 526, PB 172 ,PB 112, JBV 2, HC 20
• Fertilizer is recommended to apply FYM @ 8-10 tons/ha and NPK
@
• 100:60:40 kg/ha.
• Pre emergence spray of Atrazine @ 1g/litre controls broad-leaf
weeds effectively.
• The first inspection shall be made before flowering, second
inspections shall be made during 50% flowering and third
inspection shall be made at maturity stage.
• SEED YIELD: 3200 - 3250 kg / ha
• Questions and Answers
1.scientific name of pearl millet-----------
a. panicum miliaceum b. Pennisetum glaucum
c. Eleusine coracana d. Pennisetum purpureum
Ans- b
2. chromosome number of pearl millet
a. 14 b. 20
c. 22 d. 26
Ans- a
3. origin of pearlmillet
a. south America b. Mexico
c. Africa d. china
Ans- c
4. Isolation distance of hybrids of certified seeds in pearlmillet
a.1000 m b. 400 m
c. 800 m d. 200 m
Ans- d
5. First hybrid of pearl millet
a. HB-1 b. GHB 577
c. GHB 526 d. PB 112
Ans – a
6.------------- germination percentage required in pearl millet for a good
germination.
a. 70 b. 85
c. 75 d. 80
Ans – c
7. which crops are covered under international year of millets ?
a. pearl millet b. foxtail millet
c. finger millet d. all of these
Ans – d
pearl millet presentation 1.pptx

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pearl millet presentation 1.pptx

  • 1. SEED PRODUCTION TECHNOLOGY IN PEARL MILLET SUBMITTED BY PARMAR SNEHA J GENETICS AND PLANT BREEDING REG. NO.: 2010122045 SUBMITTED TO DR. J. N. PATEL SIR BIDI TOBACCCO RESEARCH STATION, ANAND
  • 3. P. purpureum - Elephant grass P. glaucum – Pearl millet
  • 4. INTRODUCTION Bajra is one of the most important cereals in the arid and semi-arid ecosystems in India. It is annually grown on more than 30 m ha in the arid and semi-arid tropical regions ofAsia,Africa and LatinAmerica. India is the largest grower (9.3 m ha) and producer (9.0 m ton) among pearl millet growing countries. Pearl millet holds significant economic importance in India as it is an important source of food and fodder for poor farmers in the arid and semi-arid regions of the country. The major pearl millet growing states in India are Rajasthan, Maharashtra, Gujarat, Uttar Pradesh and Haryana, which together account for more than 90% of pearl millet acreage in the country.
  • 5. Botanical name : Pennisetum glaucum L. Family Origin chromosome number : Poaceae :Africa : 2n=2x=14
  • 7. Pollination Behaviour & Floral biology The flowers are protogynous that facilitates cross pollination through wind-mediated pollen movement. Pearl millet is a highly cross-pollinated crop. Pearl millet inflorescence is a false spike, with the panicle size in commercial cultivars ranging generally from 20 to 40 cm in length and 3 to 5 cm in diameter. The panicle is terminal, varying in shape from cylindrical to candle- shaped. The spike consists of a central rachis which is closely packed with fascicles. Each fascicle consists of one or more spikelets.An inflorescence contains, on an average, 1600 spikelets.
  • 8.
  • 9.
  • 10. • The spikelets are small, lanceolate, and acute. • Each spikelet consists of two glumes, one outer and one inner. • Between the two glumes, there are two florets. • The lower floret is staminate and the upper floret is hermaphrodite. • The staminate flower has one lemma and one palea, and enclosed between them is the androecium with three stamens. • The upper hermaphrodite floret has a broad, pointed lemma and a thin, oval palea, and the androecium and gynoecium are enclosed between them.
  • 11.
  • 12.
  • 13. • The pearl millet androecium consists of three anthers, each attached to a long filament. • The gynoecium consists of a monocarpellary and superior ovary with two styles and a feathery stigma. • Anthesis continues throughout the day. • Protogyny is expressed in varying degrees in pearl millet, depending on the genotype and the environment. • Seed-set can be seen in the panicle about a week after fertilization. • There is a gradual increase in the dry mass of grains from the milk • to dough stage, reaching maximum at physiological maturity. • At physiological maturity, the seed contains 30% moisture.
  • 14. Method of seed production The CGMS system provides a genetic mechanism to produce pure single-cross hybrid seed on a commercial scale from cross betweenA-line and R-line under open pollination in isolation (Fig. 5). The counterparts of A-lines with same nuclear gene constitution but fertile cytoplasm are maintainer lines, commonly referred to as B-lines. OPVs are random mating populations. These are maintained and multiplied by random mating their representative bulk in isolation
  • 15. SEED PRODUCTION TECHNOLOGY Selection of site • Any pearl millet or its wild relative should not have been cultivated/grown during the previous season on the plot selected for seed production (and preferably within the prescribed limit of isolation distance, especially for nucleus and breeder seeds). • It thrives best in black cotton soils and sandy loam soils. • Production site should have adequate irrigation with proper drainage and good fertility level. • The soil of the selected plots should be comparatively free from soil borne diseases and pests. • The plots should be free from volunteer plants, weeds and other crop plants. • The plot must be levelled and should have adequate isolation as per the requirement of certification standards.
  • 16. ISOLATION DISTANCE • As pearl millet is a highly cross pollinated crop- recommended isolation distance should be followed strictly. • The seed crop must be sufficiently isolated from nearby fields of the same crop as per the requirements of certification standards. • Seed village approach is commonly followed for certified seed production to avoid isolation problem. • Even after the seed crop is harvested, effective isolation of seed from different varieties is essential to avoid mechanical contamination.
  • 17. Minimum isolation distance (m) Foundation/ Breeder seed Certified seed Hybrid parents OPV Hybrids OPV Fields of other hybrids/ varieties 1000 400 200 200 Fields of the same hybrid/variety not conforming to varietal purity requirements for certification 1000 400 200 200 Fields of other hybrids having common male parent but not conforming to varietal purity requirements for certification - NA 200 NA Fields of other hybrids having common male parent and conforming to varietal purity requirements for certification - NA 5 NA
  • 18. Crop management: A.Land preparation: Cultivation of field two times (cross ploughing) and harrowing once is sufficient to bring field to fine tilth. Use of plank tied behind the cultivator may be necessary to break large clods and more harrows may be required in case of fields infested with weeds. B.Planting method: Planting is done either by direct sowing of seed or transplanting the seedlings raised in nursery. •Direct-sowing: Generally, tractor or bullock-drawn seed drills or bullock plough are used for sowing. A-lines are planted by machine- drawn seed drill and R-lines are planted manually by hand dibbling in rows marked with stakes. Sowing equipment needs to be thoroughly cleaned to avoid contamination during sowing.
  • 19. Transplanting • Transplanting enables easy adjustment in flowering time of parental lines in case they have large differences for flowering time. • Transplanting saves expenditure on weeding and irrigation. It also saves time when field is occupied with any other crop. • Transplanting requires 30-40% less seed than direct sowing and proper plant stand is achieved with required spacing. • The parents of hybrid are sown in a nursery bed raised 10 cm above the ground level. • Seed should be sown 2.5 cm deep to facilitate better germination and safe uprooting of seedlings for transplanting. • Seed is sown in rows spaced 10-15 cm apart. Seedlings are transplanted in the field when they are 18-20 days old. • Transplanting of seedlings older than 20 days might result in reduced tillering and low seed yield.
  • 20. • Field layout and planting ratio: • Ratio of male and female lines depends on height and pollen producing ability of pollinator line. • Standard female : male row ratio of either 4:1 or 8:2 is followed for certified seed production. • Most common ratio is 8:2 due to ease of management. • All sides of field should be covered with 2-4 rows of male line.
  • 21. Seed rate: • The seed rate depends on planting method and row-to-row and plant- to plant spacing. • For open pollinated varieties Direct seeding - 3.5-5 kg/ha Transplanting - 1.5 kg/ha For hybrids Female parent Male parent (lineA) (line B) Direct seedling 1.5 Kg 0.75 Kg Transplanting 400-425 g 200-300 g
  • 22. Sowing time: • Date of sowing within the window impacts the yields. • Sowing date optimization therefore, is a critical requirement for yield maximization. • Optimum sowing time is site dependent and therefore, would require conducting pilot experiments in every new geography before undertaking large scale seed production activity. • Kharif – 2nd fortnight of July • Rabi – mid October to mid December
  • 23. SEED SOURCE : Obtain seed of any category from a source approved by the certification agency. SPACING: • Optimum population is 1,00,000 plants per hectare and hence it is recommended to follow 50 cm row-to-row and 20 cm plant-to- plant spacing in certified seed production. • However, in nucleus and breeder seed production row-to row spacing of 75 cm and plant-to-plant spacing of 20-25 cm is followed to facilitate closer look at individual plants in order to identify and rogue out off-types, including pollen shedders in A- lines. • Such spacing also allows better expression of plants and facilitates roguing of extreme phenotypes in OPVs.
  • 24. V ARIETIES Hybrids: OTHER: Giant Bajra, CO-8, Proagro No. 1 (FMH-3), VBH-4, NBH-149, MP-204, MP-205. Raj Bajra Chari-2, TNSC-1,APFB-2, GFB-1, PCB- 164, FBC-16,Avika Bajra Chari (AVKB-19), Narendra Chara Bajra-2 (NDFB- 2) GUJARAT GHB 577, GHB 526, PB 172 ,PB 112, JBV 2, HC 20.
  • 25. Fertilizer management: • Adequate amount of nitrogen, phosphorus and potassium is essential for proper growth and development of the crop. • It is recommended to apply FYM @ 8-10 tons/ha and NPK @ 100:60:40 kg/ha. • Basal dose of 40 kg N/ha is applied, and remaining nitrogen should be applied at tillering stage. • Soils should also be analyzed for micronutrients, especially zinc, sulfur and boron, and those found deficient should be amended through proper micronutrient management.
  • 26. Water management: • Most of pearl millet seed production is taken during off season (January to April) which is rain-free period. • The most critical stages of irrigation are tillering, flowering and seed development. • The frequency of irrigation and amount of water supplied depend upon physical texture of the soil and crop requirements. • If rains are not adequate 1-2 irrigations are needed. • Adequate soil moisture is also necessary for uniform seed germination in order to obtain good plant stand and high seed yields. Precautions: • Excessive moisture conditions and prolonged drought should be avoided during seed production. • The irrigation should be stopped at hard dough stage or about 10- 12 days before harvesting time to ensure dried conditions for harvesting.
  • 27. Weed control: • Production of high seed yield of high quality requires good weed control in the seed production plots. • Effective control of weeds at all the phases of crop growth is essential. • Weeds must not be allowed to flower or set seed in any case. • Hand weeding, intercultural operations or chemical is necessary to • control weeds. • Preemergence spray ofAtrazine @ 1g/litre controls broad- leaf weeds effectively. • Manual or machine operated weeder should be used before and • after earthing up.
  • 28.  Roguing: • Remove pollen shedders fromA-lines and off-types from parental lines in seed production field. • Pollen shedders are male fertile plants in anA-line with similar morphology. • Pollen shedders inA-line are results of mutations or mechanical mixtures. • Off-types are the plants distinctly different in morphological characteristics from those with typical characteristics of the line under production. • The off-type plants may arise through mechanical mixture or out • crossing and rarely as mutants. • Adequate and timely rouging constitutes the most important operation in seed production.
  • 29. HARVESTING AND DRYING: Fully mature seed is easily harvested and cleaned with minimal harvest losses. Delayed harvesting may result in increased losses due to lodging and seed shattering. Sun drying of seeds on clean threshing floor may be necessary to reduce moisture content, preserve viability and vigour and improve storage quality. Drying of seed to recommended moisture level of 12% is necessary to preserve its viability and vigour. SEED YIELD: 3200 - 3250 kg / ha
  • 30. • In case of pollen shedders, the best time for rouging is morning hours when theA-line will have least of the exposure to outcrossing and there is little wind movement. Precautions: • Pollen shedders should be removed before anther dehiscence. Removal of pollen shedders should be first in the morning activity and is the important aspect of quality seed production. • Off-type plants obviously differing in characteristics such as height, flowering time, colour of foliage, leaf size, shape, and orientation, tillering, panicle size, or any other morphological characteristic and diseased plants should be removed before flowering. • Roguing and sorting out of harvested panicles may be necessary in case of diseased panicles.
  • 31. Precautions: • In case of certified seed production, R-line should be harvested first. • Field should be thoroughly checked before harvestingA- line to avoid mixture. • Ensure that the drying yard is clean and free from any pearl millet or other crop seed. • Avoid making big heap at high moisture as it may deteriorate seed vigour. • Panicles should be dried to 12% moisture level. • Harvested material should be double checked properly.
  • 32. THRESHING: • Care must be taken during threshing operations to avoid any chance of mechanical mixture. • Threshing should be done lot wise. • Checking and cleaning of threshers before use is a must to keep seed free from other seeds. • Seeds should be cleaned before dispatching to processing plant by winnowing /using screens to remove chaffy /unwanted materials.
  • 33. Indian minimum seed certification standards Field Inspection A minimum of three inspections shall be made as follows: (1) The first inspection shall be made before flowering preferably within 30 days after planting to determine isolation, volunteer plants, off-types, downy mildew incidence and other relevant factors; (2) The second inspections shall be made during 50% flowering to check isolation, off-types, downy mildew/green ear (Sclerospora graminicola (Sacc.) Schroet). (3) The third inspection shall be made at maturity and prior to harvesting and in order to determine the incidence of downy mildew/green ear disease, ergot, grain smut and to verify true nature of plant and other relevant factors.
  • 34. Seed Standards Factor Standards for each class Foundation Certified Pure seed (minimum) 98.0% 98.0% Inert matter (maximum) 2.0% 2.0% Other crop seeds (maximum) 10/kg 20/kg Weed seeds (maximum) 10/kg 20/kg Ergot sclerotia, seed entirely or partially 0.020%(by 0.040% (by modified as sclerotia, broken sclerotia, or number) number) ergotted seed (maximum) Germination (minimum) 75% 75% Moisture (maximum) 12.0% 12.0% For vapour-proof containers (maximum) 8.0% 8.0%
  • 35. Summary • scientific name : pannisetum gaucum • family : poaeceae • origin: Africa • chromosome number:2n=2x=14 • India is the largest grower (9.3 m ha) and producer (9.0 m ton) among pearl millet growing countries. • Pearl millet inflorescence is a false spike, with the panicle size in commercial cultivars ranging generally from 20 to 40 cm in length and 3 to 5 cm in diameter. • The pearl millet androecium consists of three anthers, each attached to a long filament. • The gynoecium consists of a monocarpellary and superior ovary with two styles and a feathery stigma. • Anthesis continues throughout the day.
  • 36. • seed rate • Direct seeding-3.5-5 kg/ha • Transplanting-1.5 kg/ha • sowing time • Kharif – 2nd fortnight of July Rabi – mid October to mid December • spacing - 75 x 25 • GHB 577, GHB 526, PB 172 ,PB 112, JBV 2, HC 20 • Fertilizer is recommended to apply FYM @ 8-10 tons/ha and NPK @ • 100:60:40 kg/ha. • Pre emergence spray of Atrazine @ 1g/litre controls broad-leaf weeds effectively. • The first inspection shall be made before flowering, second inspections shall be made during 50% flowering and third inspection shall be made at maturity stage. • SEED YIELD: 3200 - 3250 kg / ha
  • 37. • Questions and Answers 1.scientific name of pearl millet----------- a. panicum miliaceum b. Pennisetum glaucum c. Eleusine coracana d. Pennisetum purpureum Ans- b 2. chromosome number of pearl millet a. 14 b. 20 c. 22 d. 26 Ans- a 3. origin of pearlmillet a. south America b. Mexico c. Africa d. china Ans- c 4. Isolation distance of hybrids of certified seeds in pearlmillet a.1000 m b. 400 m c. 800 m d. 200 m Ans- d
  • 38. 5. First hybrid of pearl millet a. HB-1 b. GHB 577 c. GHB 526 d. PB 112 Ans – a 6.------------- germination percentage required in pearl millet for a good germination. a. 70 b. 85 c. 75 d. 80 Ans – c 7. which crops are covered under international year of millets ? a. pearl millet b. foxtail millet c. finger millet d. all of these Ans – d