摘要
为了选育低毒小冠花新品种,我们用^(60)Co—γ射线照射小冠花根蘖芽,照射剂量分别为0、0.5、1.0、2.0、2.5、3.0、4.0、5.0、6.0千拉德,剂量率为183拉德/分。1984～1989年进行了选育试验,从中选育出低毒小冠花新品种,经化学分析和动物毒性鉴定,其毒性(3—硝基丙酸)比西德小冠花约低48.6～51.3%,遗传性稳定,产草量比对照约高25.0～42.9%,目前已在黄土高原上示范种植。
In order to select low toxin crownvetch,suckers of crownvetch was irradiated by^(60) Co gam- man rays ranging from 0,0.5、1.0、2.0、2.5、3.0、4.0、5.0、6.0KR at a rate of 183R/min.The selecting experiments started from 1984 to 1989.Through quantitative analysis and animal toxin survey,the toxin content(3-nitropropionic acid)of low toxin crownvetch is abort 48.6～ 51.3% lower than that of the old ones.The output per mu of new varieties has been increased by 25.0～42.9% as compared with control groups.Now the low toxin crownvetch is planted as a pilot cultivar on the loess plateau.
出处
《中国草地》
CSCD
1992年第6期18-22,共5页
Grassland of China
