辐射诱变育成棉花高衣分品系

HIGHER LINT PERCENT AND DROUGHT TOLERANT COTTON LINE SELECTED BY RADIATION BREEDING

用^(60)Coγ射线诱变陆地棉辽棉9号,按系谱法选育出品系中沪植PI 935(简称PI 935),它不仅具有原品种的良好性状(生育期、絮棉色泽、耐旱)而且比原品种衣分增高6个百分点,而纤维长度不减短、强度不降低,皮棉产量较高。在新疆南部经4年9个试验点次鉴定和区域试验,PI 935比对照品种(军棉1号或新陆中5号)衣分平均增高10个百分点,皮棉产量多点次持平,生育期比对照品种平均晚近5天。PI 935已收入国家作物种质资源库[统一编号ZM 114274,品种(系)名称:中沪植PI 935]。

The Gossypium hirsutum cv. Liaomian No. 9 were mutagenized by 60Co γ ray, from which the mutant line Zhonghuzhi PI 935 (be called 'PI 935' for short) was bred by family selection method. The PI 935 not only has some good traits (growing period, drought tolerance, lint color and fiber quality) similar to the original cultivar, but also has higher lint outturn and lint yield than that of the Liaomian No. 9. The PI 935 has been identified and regional tested in nine places times for four years in the southern Xinjiang Weiwuer autonomous region. It was shown that the PI 935 had the higher lint outturn for the average 47.3 % was ten-point percentage more than that of the check cultivars (Junmian No. 1 or Xinluzhong No. 5 ) , the similar lint yield by and large and the growing period by five days later than that of the checks. The PI 935 was collected in the National Bank of Crop Germplasm (u-nified No. ZM 114274 and named ' Zhonghuzhi PI 935').