Genetic diversity of Brassica carinata with emphasis on the interspecific crossability with B-rapa

文献类型： 外文期刊

第一作者： Jiang, Y.

作者： Jiang, Y.;Tian, E.;Li, R.;Chen, L.;Meng, J.

作者机构：

关键词： Brassica carinata;Brassica napus;genetic variation;amplified fragment length polymorphism;interspecific cross;gene pool

期刊名称：PLANT BREEDING （ 影响因子：1.832； 五年影响因子：1.956 ）

ISSN： 0179-9541

年卷期： 2007 年 126 卷 5 期

页码：

收录情况： SCI

摘要： Brassica carinata (BBCC, 2n = 34) possesses many good agronomic characters and, to provide more genetic information about this species and utilize it further, 110 accessions of B. carinata were tested for genetic variation by using 233 amplified fragment length polymorphism markers, so that a dendrogram could be constructed. To combine the good traits of B. carinata and B. rapa (AA, 2n = 20) with those of B. napus (AACC, 2n = 38) which is the major rapeseed variety in China, interspecific crosses between these two species have been made which have resulted in 276 doubled hybrids (AABBCC). These hexaploids combine positive characters and can be used for crossing with B. napus. Brassica carinata as the female parents exhibited extensive differences in interspecific crossability and 20 high crossability accessions were identified. The Poisson Regression Model analysis result (P < 0.0255) indicated that such differences were due to the genotype of the accessions. Accessions with high crossability could promote gene flow within the genus Brassica.

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