Q391
Commercial hybrid seed production in cotton in our country has been possible due to which one of the following reasons
A.
Availability of male sterile lines
AnswerB.
Pressure of self-incompatibility system
C.
Large-scale hand emasculation and pollination
D.
Entomophily of flowers
Answer: Option A
Solution
Answer: Option A
Solution:
Commercial hybrid seed production in cotton in our country has been possible due to the availability of male sterile lines.In Cotton hybrid seed production is done either by conventional hand emasculation and pollination or by nonconventional (male sterility based).
Genetic male sterility (GMS) in cotton occurs in a form of non-dehiscent anthers and unviable pollens when the reproductive development process fails due to possible loss of nuclear gene functions required for pollen development.