论文部分内容阅读
利用SDS -PAGE技术 ,从河北省小麦地方品种及国内外小麦育成种 12 70份中 ,发现Wx B1突变体 6 3份 ,Wx D1突变体 4份 ,Wx E 2份。红蘖麦和白芒白等品种的发现 ,丰富了品质育种的亲本 ;长穗偃麦草的蜡质基因与小麦蜡质基因不同 ,可以进行更深入的分子水平研究。研究表明 ,地方品种和育成种具有相似的突变规律 ;国外优良品质材料含有较高的Wx B1突变频率 ;国内以源自北京、山西、陕西、云南的材料突变频率最高 ;河北、河南、山东、江苏等省份突变频率居中 ;而四川、天津、黑龙江和安徽等省份的样本量太小 ,突变频率也最低。该频率分布规律为今后育成种筛选的重点提供了帮助。
SDS-PAGE analysis showed that 63 WxB1 mutants, 4 WxD1 mutants and 2 WxE were found from 1270 wheat cultivars and 1270 wheat cultivars at home and abroad. The discovery of the red tillering wheat and the white mangosteen varieties enriched the parents of quality breeding. The waxy genes of the long-sicklegrass were different from the wheat waxy genes and could be used for further molecular studies. The results showed that local breeds and breeding varieties had similar mutation rules. The foreign high quality materials contained high frequency of Wx B1 mutation. The highest frequency of mutation was found in materials from Beijing, Shanxi, Shaanxi and Yunnan in China. The frequency of mutations in Hebei, Henan, Shandong, In Jiangsu and other provinces, the frequency of mutation was centered; however, the sample size in Sichuan, Tianjin, Heilongjiang and Anhui provinces was too small and the mutation frequency was also the lowest. The frequency distribution law provides the help for the focus of breeding breeding in the future.