Induction of Staminate Flowers in Gynoecious Lines: Gynoecious cucumber lines (Cucumis sativus) produce only pistillate (female) flowers, preventing natural selfing.
Maintenance: Foliar application of Silver Nitrate ($AgNO_3$) or Silver Thiosulfate (STS) acts as a potent inhibitor of ethylene action, inducing transient male (staminate) flowers that produce viable pollen for self-pollination. (Correct answer: Option 1)
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2
ICAR JRF Seed Science And Technology 29 Jun 2024Shift 1
MCQ (Single Correct)+4−1
Commercial exploitation of two lines system of hybrid seed production is feasible in
Two-Line Hybrid Seed Production: A hybrid breeding system that eliminates the need for maintainer (B) lines by utilizing environmentally sensitive genic male sterility (EGMS—TGMS or PGMS) or functional male sterility.
Commercial Feasibility: Successfully established and commercially exploited in Brinjal (Solanum melongena) utilizing functional male sterility (positional sterility/exserted stigma) or TGMS systems. (Correct answer: Option 1)
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