More Related Content More from Pawan Nagar (20) Pgr3. Cucurbits
1. Water melon
2. Musk Melon
3. Cucumber
4. Bitter gourd
5. Bottle gourd
6. Pumpkin
7. Sponge gourd
8. Ridge gourd
9. Ivy gourd
10. Pointed gourd
6. Sex Forms in Cucurbits
1. Monoecious
2. Gynoecious
3. Androecious
4. Dioecious
5. Andromonoecious
6. Gynomonoecious
7. Trimonoecious
8. Hermaphrodite
7. Effect of Plant growth Regulators
Increase fruit size
Increase No. of Male flowers
Increase No. of female flowers
Increase Yields
Induce Parthenocarpy
8. Induction of Staminate & Pistillate flowers
Silver nitrate (AgNO3)
Silver thiosulphate [Ag(S2O2)2]
Gibberelic acid
Mallic Hydrazide (MH)
Cycocel (CCC)
NAA, Etherel
Male flower
Female
flower
9. Growth Regulator sprays
GA₃ 10 - 25 ppm –
Two sprays
♀
2 leaf stage
4 leaf stage
3 ppm of Mo
3 ppm of Boron
100 ppm of NAA
25 – 100 ppm MH
10. Role of Growth Regulators
Ethylene
precursor
Ethylene
Male receptor
Female receptor ♀
♂
AgNO3
Inducing
Inhibiting
AgNO3
GA3
11. Effect of Plant growth Regulators
NAA,Ethylene = Increase No. of
Female flowers
GA, AgNO3 = Increase No. of
female flowers
Increase Yields
TIBA = Induce Parthenocarpy
14. Effect on Cucurbits
S.N. CROP GROWTH REGULATORS ATTRIBUTES
(INCREASE)
1. Water melon TIBA 25-50 ppm Fruit Yields
2. Musk melon Etherel 250 ppm Fruit Yields
STS 300-400 ppm Male flowers
3. Cucumber MH100 ppm Female flowers
4. GA 1500-2000 ppm Male flowers
5. GA 10-20 ppm Female flowers
6. Bottle gourds TIBA, MH, Etherel 400 ppm Fruit set
7. Bitter gourds MH-150,GA-60,Etherel-25 ppm Female flowers
8. Round melon MH 50 ppm Female flowers
9. Musk melon CCC-50 ppm Salt tolerance