欢迎访问《麦类作物学报》编辑部网站

为探索利用长穗偃麦草4E染色体代换方法快速创制具有蓝粒标记性状的小麦单体系统，本试验以中国春6B单体和小麦－长穗偃麦草4E二体异附加系为材料，通过杂交、回交结合染色体鉴定等方法培育出具有蓝粒标记的小麦单体代换系4E(6B)。该蓝粒标记小麦单体代换系籽粒为浅蓝色，能够正常生长结实，其自交后代可分离出27.8％的深蓝籽粒小麦4E(6B)二体代换系、66.7％的浅蓝籽粒小麦4E(6B)单体代换系和5.5％的白粒小麦6B缺体，表明长穗偃麦草4E染色体对小麦6B染色体的缺失具有一定的补偿功能。

英文摘要:

To establish a shortcut method of developing blue grained wheat monosomic system, a blue grained wheat 4E(6B) momosomic substitution line was developed from the hybrid of Chinese Spring monosomic 6B and Triticum aestivum Agropyro elongtum 4E addition line. This blue grained wheat 4E(6B) monosomic substitution line was growing normally and fertility. Three types of seeds were separated from the selfing offspring of 4E(6B) monosomic substitution line. Deep blue grained, accouting for 27.8%, was 4E(6B) disomic substitution line. Light blue grained, accouting for 66.7%, was 4E(6B) monosomic substitution line. White grain, accouting for 5.5%, is nullisomic 6B.The results indicated that chromosome 4E from Agropyro elongtum could compensate the effect of chromosome 6B absence partly. This study offered a better way to develop blue grained monosomic system in wheat.

查看全文查看/发表评论下载PDF阅读器

关闭