Heterosis Breeding - GPB 507 (Question Paper )

   

(a) Definition/very short answers

1. Luxuriance
2. Dominance hypothesis

(b) Reasoning and short answer questions

1. Why σ²g is not fixable
2. Importance of inbreeding in the exploitation of heterosis

(c) Brief notes/short notes

1. Bottleneck concept
2. Methods to fix the heterosis

(d) Long answer questions

1. Define Heterosis, inbreeding depression, hybrid and inbred.
2. What are the important steps involved in the development of hybrid? How the newly developed inbreds are evaluated for high combining ability and high yield.