pgr uses on cucurbits

2. Effect of PGR’s
on
Cucurbits
2
Presented by
PAWAN KUMAR NAGAR
M.Sc. (Fruit science)

3. 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

4. Major
cucurbits

5. Cucumber Bitter gourd
Musk melon Sponge gourd Water melon
Different type of flowers

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

12. Increase in Flower & Fruit Size

13. Increase in Flower & Fruit Size

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

15. “Cucurbits-Everyone’s Crop”