ÃÞ »¨ ѧ ±¨     Cotton Science    2009£¬21(3)£º179-183

 

 

The Inheritance of Cotton Yield and Fiber Quality Characters
YANG Liu-liu1£¬LIU Hui-min2£¬CAO Mei-lian1£¬LI Peng-bo1£¬WANG Jiao-juan1£¬CHEN Geng1
(1.Institute of Cotton Research,Shanxi Academy of Agricultural Sciences,Yuncheng,Shanxi 044000, China£»2.Shanxi Academy of Agricultural Sciences£¬Taiyuan£¬Shanxi 030006£¬China)

Abstract£ºThe cotton yield factors, the hereditary effect of cotton fiber quality and the genetic correlation were studied using the incomplete diallel analysis (8¡Á8), and the genetic correlation was divided into addictive correlation and dominant correlation. The results showed among cotton yield factors, the inheritance of lint yield and boll numbers per plant were mainly controlled by addictive effect and dominant effect, and the addictive effect and dominant effect of inheritance for boll weight and lint were equally important as well. The effect of environment variance on lint was the least, so it was better to take breeding selection in the population of F2-F3 generations. As for the characters of cotton fiber quality, the inheritance of fibre length, specific tenacity and micronaire value were mainly controlled by addictive effect. The effect of environment variance on them above-mentioned were all bigger. The correlation between cotton yield factors and fiber quality characters generally showed that genotypical correlation was bigger than phenotypical correlation. The nature of phenotypical correlation, genotypical correlation and addictive correlation for each character was similar, however, it was different for dominant correlation. It was concluded that genotypical correlation, especially addictive correlation, could assist cotton breeding, while dominant correlation was very important to utilize the hybrid vigor.
Key words£ºcotton£»yield factors£»fiber quality character£»hereditary effect£»genetic correlation£»addictive correlation£» dominant correlation      [Full Text, 2141KB]