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Pgr
Effect of PGR’s
on
Cucurbits
2
Presented by
PAWAN KUMAR NAGAR
M.Sc. (Fruit science)
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
Major
cucurbits
Cucumber Bitter gourd
Musk melon Sponge gourd Water melon
Different type of flowers
Sex Forms in Cucurbits
1. Monoecious
2. Gynoecious
3. Androecious
4. Dioecious
5. Andromonoecious
6. Gynomonoecious
7. Trimonoecious
8. Hermaphrodite
Effect of Plant growth Regulators
Increase fruit size
Increase No. of Male flowers
Increase No. of female flowers
Increase Yields
Induce Parthenocarpy
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
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
Role of Growth Regulators
Ethylene
precursor
Ethylene
Male receptor
Female receptor ♀
♂
AgNO3
Inducing
Inhibiting
AgNO3
GA3
Effect of Plant growth Regulators
NAA,Ethylene = Increase No. of
Female flowers
GA, AgNO3 = Increase No. of
female flowers
Increase Yields
TIBA = Induce Parthenocarpy
Increase in Flower & Fruit Size
Increase in Flower & Fruit Size
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
“Cucurbits-Everyone’s Crop”

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Pgr

  • 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
  • 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