Machine-translated by Google. Questions are authored in English.
Top

Discussion

Which hormone is used to enhance number of female flowers in cucurbits ?

  • A.NAA
  • B.Ethrel
  • C.\(\text{GA}_{3}\)
  • D.IAA

Answer: B

The hormone is Ethrel.

In cucurbits such as cucumber, pumpkin, bottle gourd and squash, sex expression is influenced by growth regulators. Ethrel (ethephon), which releases ethylene, sprayed at the two- to four-leaf stage, increases the number of female flowers and moves them to lower nodes, raising fruit set and yield.

Gibberellic acid (\(\text{GA}_{3}\)) has the opposite effect, promoting male flowers. NAA and IAA are auxins, used for rooting and fruit set rather than this purpose.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.