Flamingo cucumber – greenhouse variety – 14 – 16 inches long.
Greensleeves. 7 to 8 inches long; uniform size. Early maturing.
Iznik 3.5 to 4 inch long cucumbers. Considered both Gynoecious and parthenocarpic. Accidental Pollination can produce undesirable results.
Raider. Uniform size. Does well in Cool northern climates. Gynoecious, mostly female flowers Hybrid.
Slice Master Hybrid. Dark-green fruit up to 8 inches. Early maturing.
Passandra 4.5 to 7 inches long. Good disease resistance.
Pepinex – English-type cucumbers 12 – 14 inches long.
Regal. Disease Resistant 7 – 10 inches long.
Saladin. Curved about 5 inches long X 1.5 inches round. Suited for greenhouses.
Gynoecious varieties are special hybrids which produce predominantly female flowers.
These often outproduce standard varieties when a pollenizer (monoecious variety) is present.
The cucurbit vegetables are the largest and diverse group comprised of 900 species classified under 130 genera (Jeffrey, 1964; 1980) belongs to the family Cucurbitaceae.
wide range of variation in sex forms ranging from primitive hermaphrodite to gynoecious advanced sex form is observed in cucurbitaceous vegetable crops.
Sex expression in cucurbitaceae family is regulated by environmental, genetic and hormonal factors.
In general, female sex expression is promoted by low temperature and short photoperiod, which may influence the level of endogeneous hormones (ethylene, auxin and GA) which in turn influence the sex expression1.CONCENTRATED FRUIT SET
Gynoecious varieties produce large numbers of female flowers and have a fairly concentrated flowering period. Thus, they produce a lot of fruit over a relatively short amount of time
A great stride is witnessed in area expansion under protected cultivation, particularly in arid-western parts of India, where cucumber is a predominant greenhouse crop.
The early-summer crop of cucumber is highly remunerative owing to high prevailing market price. In current study, efforts were made to select suitable greenhouse cucumber hybrids for early season harvest under western Indian arid plains.
Growth, yield and commercial quality traits of seven commercial gynoecious and parthenocarpic (seedless) cucumber hybrids were studied under greenhouse condition during 2015-16.
Among the hybrids evaluated for early summer greenhouse production, Terminator was more precocious for fruit harvest (36 days after transplanting) followed by Rica and Dinamik.
Flamingo cucumber – greenhouse variety – 14 – 16 inches long.
Greensleeves. 7 to 8 inches long; uniform size. Early maturing.
Iznik 3.5 to 4 inch long cucumbers. Considered both Gynoecious and parthenocarpic. Accidental Pollination can produce undesirable results.
Raider. Uniform size. Does well in Cool northern climates. Gynoecious, mostly female flowers Hybrid.
Slice Master Hybrid. Dark-green fruit up to 8 inches. Early maturing.
Passandra 4.5 to 7 inches long. Good disease resistance.
Pepinex – English-type cucumbers 12 – 14 in
TOPIC- USE OF GYNOECIOUS VARIETIES IN NET HOUSE.PPTX
1. TOPIC- USE OF GYNOECIOUS
VARIETIES IN NET HOUSE AND SEX
FORMS OF CUCURBITS
SUBMITTED BY
NEHA YADAV
[B2019A12BIV
SUBMITTED TO
2. CONTENT
• WHAT ARE GYNOECIOUS VARIETIES
• BENEFITS OF GYNOECIOUS VARIETIES
• WHY NET HOUSE IS IMPORTANT FOR
GYNOECIOUS VARIETIES
• SEX FORMS OF CUCUMBER
3. GYNOECIOUS VARIETIES
• Gynoecious varieties are special hybrids which
produce predominantly female flowers.
• These often outproduce standard varieties
when a pollenizer (monoecious variety) is
present.
4. Varieties of Gynoecious cucumbers
• Flamingo cucumber – greenhouse variety – 14 – 16 inches long.
• Greensleeves. 7 to 8 inches long; uniform size. Early maturing.
• Iznik 3.5 to 4 inch long cucumbers. Considered both Gynoecious
and parthenocarpic. Accidental Pollination can produce undesirable
results.
• Raider. Uniform size. Does well in Cool northern climates.
Gynoecious, mostly female flowers Hybrid.
• Slice Master Hybrid. Dark-green fruit up to 8 inches. Early maturing.
• Passandra 4.5 to 7 inches long. Good disease resistance.
• Pepinex – English-type cucumbers 12 – 14 inches long.
• Regal. Disease Resistant 7 – 10 inches long.
• Saladin. Curved about 5 inches long X 1.5 inches round. Suited for
greenhouses.
5. BENEFITS OF GYNOECIOUS VARIETIES
1.CONCENTRATED
FRUIT SET
Gynoecious varieties
produce large numbers of
female flowers and have a
fairly concentrated
flowering period. Thus,
they produce a lot of fruit
over a relatively short
amount of time
6. 2.EASY MECHANICAL HARVEST
Concentrated fruit
production works well
in mechanical harvest
systems that harvest
only once or in multi
pick systems with
small harvest windows
or the need to rotate
to another crop
quickly.
7. 3.EARLY MATURITY
A great stride is witnessed in area expansion
under protected cultivation, particularly in arid-
western parts of India, where cucumber is a
predominant greenhouse crop.
The early-summer crop of cucumber is highly
remunerative owing to high prevailing market
price. In current study, efforts were made to
select suitable greenhouse cucumber hybrids
for early season harvest under western Indian
arid plains.
Growth, yield and commercial quality traits of
seven commercial gynoecious and
parthenocarpic (seedless) cucumber hybrids
were studied under greenhouse condition
during 2015-16.
Among the hybrids evaluated for early summer
greenhouse production, Terminator was more
precocious for fruit harvest (36 days after
transplanting) followed by Rica and Dinamik.
TERMINATOR
9. 5.POLLINATION BY SEED BLENDING
Most seed companies
provide cucumber seed
blends that contain 85% to
90% gynoecious seed and
10% to 15% monoecious
seed.
These blends ensure that
the optimal proportion of
male to female flowers are
present in a planting,
resulting in good pollination
levels and high fruit yields.
10. SEX FORM OF CUCURBITS
• The cucurbit vegetables are the largest and diverse group
comprised of 900 species classified under 130 genera
(Jeffrey, 1964; 1980) belongs to the family Cucurbitaceae.
• wide range of variation in sex forms ranging from primitive
hermaphrodite to gynoecious advanced sex form is
observed in cucurbitaceous vegetable crops.
• Sex expression in cucurbitaceae family is regulated by
environmental, genetic and hormonal factors.
• In general, female sex expression is promoted by low
temperature and short photoperiod, which may influence
the level of endogeneous hormones (ethylene, auxin and
GA) which in turn influence the sex expression.
