TITLE:
Open and Closed Breeding of Crops
AUTHORS:
Peizhan Tian
KEYWORDS:
Open Breeding, Closed Breeding, Crop
JOURNAL NAME:
Open Access Library Journal,
Vol.3 No.3,
March
10,
2016
ABSTRACT: Mutual suiting relationship between breeding way and widening germplasm
was first analyzed. Source of utilization germplasm was the more the widener
from only using variation in a variety to among family even bigger scope, especially
transformation gene breeding could use superfine gene of living things in the
world and create germplasm resources that could not obtain in conventional
breeding. Secondly contradiction and its movement between ecological and yield
ability character, among yield ability characters or ecological characters
exist all; this verified that explaining all of phenomenon was “net system of
character composition of yield performance”, “theoretical genetics and breeding
science of crops” theory system setting up by author. Thirdly new concepts,
closed breeding and open breeding were put forward on basis of relationship of
unity of opposition among above characters (genes) and supplying way of necessary
energy in character express. Theory of closed and open breeding was a
generalization of most essential distinction for different breeding way, also
theory basis of correct evaluation these. It made people abandon tradition
concept that only had variation and also emergence of new variety, and also
made people refute mythology on basis of theory that depending on closed
breeding could obtain higher yield variety. Openness of sexual cross breeding
etc. decided that it will forever be foothold in an invincible position, develop
always and any breeding way will not all replace it.