1. Dolichos lablab is a multipurpose crop native to India or Southeast Asia. It is cultivated for its young pods, dry seeds, as fodder, green manure, cover crop, and ornamental uses. 2. The flowers are hermaphroditic and self-pollinating, with 6-10% natural cross-pollination occurring depending on environmental conditions. The flowers open in the morning from 6-11 AM and remain open from 11 AM to 5 PM. 3. For artificial crossing, emasculation is done by removing the male parts from young flower buds followed by artificial pollination of the emasculated flower and bagging to

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2. LABLAB
• FLORAL BIOLOGY
• SELFING
• EMASCULATION
• CROSSING
BY
MANJUNATH HARTI
Jr M.Sc (agri)
ID NO-PAK 9211
DEPT OF GPB 2

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• Scientific Name :Dolichos lablab (L).
• Family : FABACEAE
• Chromosome No. : 2n = 2x = 22

4. TAXONOMY
• Botanical name : Dolichos lablab
• Order :Fabales
• Family :Fabaceae
• Sub-family :Faboideae
• Genus :Dolichos
• Tribe :Phaseoleae
• Sub-tribe :Faboideae
• Species :Lablab
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5. USES
The crop is multipurpose.
• Grown for its young pods .
• Dry seeds are used in many preparation.
• As fodder
• As green manure
• As cover crop
• As ornamental in USA
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6. • Is a native to India or South-East Asia. It is probably of an
Asian origin and has been under cultivation since ancient
times. Its wild forms are found in India
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• D. lablab
• D. purpureus
• D. albus
• D. cultratus
• D. bengalensis
• D. lablab var
hortensis
• D. lablab var
muschler
• D. lablab var
schweinf

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FLORAL
BIOLOGY
FLORAL
MORPHOLOGY
FLORAL
ANTHESIS

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• Infloresence is a stiff axillary raceme
with many flowers.
• Flowers 1-5 together form tubercles
on rachis.
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• Flowers are in various colours.
• In clusters of 4-5.
• Two large basal bracts.
• Stamens are diadelphous(9+1)
• Stigma is capitate & glandular
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• Starts in morning around 6 am and continues till 11 am
• Maximum flower opening – 11am to 5 pm

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• Essentially a Self Pollinated crop
was chasmogamy.
• Self pollination varies between
94 - 99%

15. • But 6-10% Natural Cross
pollination have been
reported depending on
• Temperature
• Insect population &
activity at flowering time
• Planting design
• Plant population
• Wind velocity & direction
• Genotypic nature
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• Bagging of young bud
• In this crop 6-10% cross
pollination is observed.

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• Includes
• Emasculation
• Artificial pollination
• Bagging
• Taging

18. • It is the removal of male part from the bisexual
flower.
• Use sharp forceps & needles.
• A cut with thumb is made on the ventral side to 2/3
of the bud and tips are clipped off
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20. CROSSING
• Take well opened flower.
• Gently push the back of the flower & get the
pollens.
• Then put pollens on emasculated flower.
• Then bag it.
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• Success rate – 33%
• Depends upon temperature and humidity
• Emasculation carried out before noon
• Pollinate the emasculeted flowers on the same day or
following day.

23. VARIATION
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24. IMPROVED VARIETIES
• Rongai
• Highworth
• Koala
• Endurance
• HA-4
• Hebbal avare-1
• Hebbal US.67-31
• Hebbal avare-4
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