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目前,辐射的方法已成功地应用于育种之中,但应用于棉花杂种优势育种上尚不多见。本试验旨在观察r射线对二倍体亚洲棉品种间杂种和陆地棉杂种的杂种优势和重组育种的影响。 1985年,用2、5和10千伦r射线照射200粒亚洲棉“SD_4(红色)×SD_(40)(绿色)”杂种,以增加负相关有利性状,如产量、衣分和纤维长度的重组率。两个亲本亦进行同样处理。1986年对3个陆地棉种内杂种也进行上述照射剂量的重复处理。
At present, the method of radiation has been successfully applied in breeding, but it is rare to apply it to cotton heterosis breeding. The purpose of this experiment was to observe the effects of r-rays on the heterosis and recombination breeding of diploid inter-cotton hybrids and upland cotton hybrids. In 1985, 200 Asian cotton “SD_4 (red) × SD_ (40) (green)” hybrids were irradiated with 2, 5 and 10 millennial r-rays to increase negatively correlated favorable traits such as yield, lint and fiber Length of the recombination rate. The two parents also do the same thing. In 1986, the three Upland Cotton hybrids were also subjected to the above radiation dose repetition.