回交在亚麻选种效果上的研究

Study on selective breeding effection of Flax by backcross

回交法对提高亚麻出麻率和纤维产量上效果显著。在选种效果上,以回交一代选种效果为最佳;回交二代选种效果也很好,特别是对攻关性状的选择上效果显著;回交三代选种效果最不理想。在回归亲本和非回归亲本的选择上,均是出麻率和纤维产量愈高,综合经济性状愈优良的品种,后代选择的效果愈好。

Backcross makes a notable impact eff ection on improving fibre yield and l ong fibre content.On selective breeding effection,th e first generation of comeback(B1)is the best;the second generation of comeback(B2)is better,especially for Selection of tackle key properties;the third g eneration of comeback(B3)is the worst of all.About selection o f regression parent and non -regression parent,the better long fiber content and fibre y ield is(in other words,the better synthetic ecnomu proerties is),the more obvious effection of later generation selection becomes.