【摘要】 以2类转基因抗虫棉和4个不同类型的推广品种为材料,于2002~2003年,对各供试材料的经济性状、农艺性状、早熟性和抗红铃虫性等进行了全面鉴定。比较试验采用随机区组设计,重复3~4次;抗红铃虫鉴定试验在网室进行。试验结果表明,抗虫棉尤其是抗虫杂交棉丰产稳产性好,在较一般棉田减少化学治虫70%左右条件下仍能获得高产,比非抗棉推广品种增产极显著。抗虫棉的纤维品质优良,抗虫性强,早熟性好,培育和推广抗虫棉品种具有广阔的应用前景。更多还原

【Abstract】 Two classes of insect resistant varieties and four groups of traditionally bred varieties were investigated in their economic and agronomic characters, early maturity and pink bollworm resistibility in the years of 2002 and 2003. The tests were arranged in accordance to the design of randomly grouped plots and three times repeats. The identification of pink bollworm resistance was carried out in caged plots. The results showed that the insect resistant varieties, especially the insect resistant hybrids, expressed a better cotton productivity and produced a higher yield under the condition of 70% of reduced chemical prevention and control of the pests compared with those of the ordinary cotton growing field. The percentages of the yield increments reached extreme significant levels statistically. A conclusion was made that breeding out and popularizing the insect resistant cotton varieties had a broader future, as these varieties had a higher fiber quality, stronger insect resistibility and earlier maturation character.更多还原