论文部分内容阅读
采用６０Ｃｏγ射线６．４５Ｃ／ｋｇ处理高产优质品种（系）鄂棉１５和０５①００６，研究其γ２代正常型和非正常型的主要经济性状的变异。结果表明：γ２代的籽棉产量、皮棉产量、单株铃数、单铃重、衣分、衣指、籽指、纤维长度等数量性状发生了明显的变异：扩大了变异范围，提高了变异程度，增加了有利变异的频率，出现了高出对照相应性状最大值的单株。在γ２代非正常型中，有利于选出产量较高、结铃性较强、纤维较长、较早熟的单株；γ射线辐射对不同材料的效应是不同的：欲增加皮棉产量，０５①００６γ２代宜在正常型中选择，鄂棉１５γ２代宜在非正常型中选择；在０５①００６γ２代的非正常型和鄂棉１５γ２代的正常型中，易选出铃重高的单株；在鄂棉１５γ２代中，利于选出高衣指的单株，但不宜在０５①００６γ２代中选择。
High-yield and high-yielding varieties (lines) Emei 15 and 05①006 were treated with 60Coγ-rays at 6.45C / kg to study the variation of major economic traits of normal and abnormal γ2 generation. The results showed that there were obvious variations in quantitative traits such as seed cotton yield, lint yield, boll number, boll weight, lint percentage, finger index, seed index and fiber length of γ2 generation: the range of variation was enlarged and the degree of variation , Increased the frequency of favorable mutation, and appeared higher than the corresponding control maximum value of the individual plants. In the γ2 generation of non-normal type, is conducive to the selection of higher yield, boll resistance, fiber longer, more mature individual; γ-ray radiation on the effects of different materials are different: To increase the lint yield, 05①006γ2 On behalf of the appropriate choice in the normal type, E cotton 15γ2 generation should be selected in the non-normal type; 05①006γ2 generation of non-normal and E-cotton 15γ2 generation of the normal type, 15γ2 generation, which is conducive to the selection of single high-coat finger, but should not be selected in the 05①006γ2 generation.