Which phytohormone is responsible for the promotion of female flowers in cucumber?

• A) ABA
• B) GA₃
• C) C₂H₄
• D) C₂H₂

The phytohormone responsible for promoting female flowers in cucumber is ethylene (C₂H₄). Ethylene plays a crucial role in the development of female flowers, which is essential for fruit production in cucumbers.

Understanding Phytohormones

Phytohormones are natural substances that regulate plant growth and development. Each type has specific functions:

• ABA (Abscisic Acid): Primarily involved in stress responses.
• GA₃ (Gibberellic Acid): Promotes stem elongation and seed germination.
• C₂H₄ (Ethylene): Influences fruit ripening and flower development.
• C₂H₂ (Acetylene): Less common in plant hormone discussions.

Role of Ethylene in Cucumber

In cucumbers, ethylene not only encourages the formation of female flowers but also affects the overall yield. By managing ethylene levels, growers can enhance female flower production, leading to better fruit harvests.