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目前 ,转Ｂｔ基因抗虫棉已成为治理棉铃虫最经济、最有效的途径之一 ,但在抗虫棉应用的过程中不少抗虫棉品种 (系 )的皮棉产量都不高 ,存在着抗虫性和丰产性难以协同表达的问题 ,棉花的生育性状也发生了改变。棉花苗期阶段是生长发育的重要阶段 ,此阶段棉苗素质的好坏将直接影
At present, transgenic Bt cotton has become one of the most economical and effective ways to control cotton bollworm. However, during the application of insect-resistant cotton, the lint yield of many insect-resistant cotton varieties is not high, Insect resistance and high yield difficult to coordinate the issue of cotton’s reproductive traits have also changed. Cotton seedling stage is an important stage of growth and development, cotton seedling quality at this stage will be direct or direct