Identification of chromosome and fertility of BC1 of pentaploid hybrid between Elymus canadensis and Elymus dahuricus

摘要：

In recent years, the artificial wide cross between Elymus canadensis(2n=4x=28)and Elymus dahuricus (2n=6x=42)was conducted and the interspecific hybrid F1 was obtained successfully. It is reported that the hybrid F1 is pentaploid (2n=5x=35),and highly sterile.In order to restore fertility to hybrid F1, hybrid F1 was backcrossed by recurrent parent E. canadensis and BC1 plant was obtained.The chromosome number and pollen fertility, seed set of BC1 plant were identified in this test in order to find out the cytogenetic characters and status of fertility restoration and to provide scientific basis for selection and utilization of excellent lines of cross descendents.

关键词： Elymus canadensis Elymus dahuricus BC1 chromosome fertility

作者: Yu Zhuo Ma Yan-hong Li Xiao-lei Li Zao-zhe

作者单位: Agronomy College,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010019,China

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）