Agriculture Sciences - ICAR AIEEA (Horticulture & Plant Pathology)

Fruit/Vegetable Cultivation, Post-Harvest & Plant Diseases question bank (Pomology, Olericulture & Plant Protection)

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Q1.

Plant Breeding & Genetics: In commercial hybrid seed production in pearl millet, sorghum, and rice in 'Pomology: Cultivation of Major Fruit Crops (Mango, Banana, Citrus, Apple)', which genetic mechanism is deployed to eliminate the need for manual emasculation?

(A)

Cytoplasmic Genetic Male Sterility (CGMS - 3-line breeding system: A-line, B-line, R-line) (Pomology: Cultivation of Major Fruit Crops (Mango, Banana, Citrus, Apple))

(B)

Self-incompatibility exclusively

(C)

Induced autopolyploidy

(D)

Clonal selection

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Q2.

Post-Harvest Technology: What physiological hormone gas triggers the climacteric respiratory burst and rapid ripening in harvested bananas, mangoes, and tomatoes in 'Pomology: Cultivation of Major Fruit Crops (Mango, Banana, Citrus, Apple)'?

(A)

Ethylene ($C_2H_4$) (Pomology: Cultivation of Major Fruit Crops (Mango, Banana, Citrus, Apple))

(B)

Abscisic Acid (ABA)

(C)

Gibberellic Acid ($GA_3$)

(D)

Cytokinin

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