南疆海岛棉纤维含糖量的生态效应研究

The Studies on Ecological Efficiency of the Fiber Sugar Content on Island Cotton in the South of Xinjiang

对新疆南疆海岛棉区试的1991、1992年，4个地点、8个品种（系）纤维含糖量进行了分析。结果表明，海岛棉纤维含糖量受控于品种特性，以品种为单位的纤维含糖量的遗传力为82．3％；南疆区域内的不同地区，纤维含糖量差异不显著；不同品种在不同年份纤维含糖量差异极显著，年际间气候变化也是影响纤维含糖量的主要原因；不同品种纤维含糖量的稳定性表现不同。因此，通过品种选育可望较大幅度地降低海岛棉纤维含糖量．

The analysis on the fiber sugar content of eight varieties of 1991 and 1992 fromfour regional testing field in the South of Xinjiang showed the fiber sugar content is restrict-ed by the characteristic of varieties, The heritability of fiber sugar content is 82. 3% in uniton variety. The fiber sugar content have no significant difference indifferent regions of Nanjiang.The fiber sugar content is significant at the 0. 01 levels in different years, the change of theweather among years is also one of main reasons to affect the sugar content. The stability ofthe fiber sugar content is different to different varieties. So the fiber sugar content can possi-bily be lowered by selecting varieties.