Analysis on Self-compatibility of Artificially Synthesized Brassica napus Lines from Different Cross Combinations  

作　　者：Zhigang ZHAO Hongchao ZHAO Qinglan YU 

机构地区：[1]Qinghai Academy of Agricultural and Forestry Sciences/Key Laboratory for Plateau Crop Germplasm Innovation and Utilization of Qinghai Province

出　　处：《Agricultural Biotechnology》2013年第6期17-20,共4页农业生物技术（英文版）

基　　金：Supported by National Natural Science Foundation of China(30960200);National Science and Technology Support Program of China(2011BAD35B04);Applied Basic Research Project of Qinghai Province(2011-Z-701)

摘　　要：Brassica rapa cuhivars Qinghaidahuang and Menyuan small rape were used as female parents and separately interspecifically hybridized with Zhongchijie- lan to artificially synthesize a number of Brasica napus resources. Observation of meiosis, pollen fertility and pollen tube germination and analysis of self-compati- bility index of these artificial B. napus varieties were conducted. Results showed that pollen mother cells of artificial B. napus lines from two cross combinations all had normal chromosome behavior and high pollen fertility, but the selfing seed-setting and self-compatibility index varied extremely significantly; B. napus lines from cross combination Qinghaidahuang x Zhongchijidan are highly self-compatible, while B. napus lines from cross combination Menyuan small rape x Zhongchijielan are highly self-incompatible. This study analyzed the heredity laws of self-incompatibility trait in artificially synthesized lines and discussed applica- tion prospects of artificially synthesized self-incompatible B. napus lines in rapeseed production.Brassica rapa cuhivars Qinghaidahuang and Menyuan small rape were used as female parents and separately interspecifically hybridized with Zhongchijie- lan to artificially synthesize a number of Brasica napus resources. Observation of meiosis, pollen fertility and pollen tube germination and analysis of self-compati- bility index of these artificial B. napus varieties were conducted. Results showed that pollen mother cells of artificial B. napus lines from two cross combinations all had normal chromosome behavior and high pollen fertility, but the selfing seed-setting and self-compatibility index varied extremely significantly; B. napus lines from cross combination Qinghaidahuang x Zhongchijidan are highly self-compatible, while B. napus lines from cross combination Menyuan small rape x Zhongchijielan are highly self-incompatible. This study analyzed the heredity laws of self-incompatibility trait in artificially synthesized lines and discussed applica- tion prospects of artificially synthesized self-incompatible B. napus lines in rapeseed production.

关 键 词：Qinghaidahuang Menyuan small rape Artificially synthesized Brassica napus SELF-INCOMPATIBILITY 

分 类 号：S565.4[农业科学—作物学]