Genetic analysis of rapeseed self-incompatibility lines reveals significant heterosis of different patterns for yield and oil content traits
文献类型: 外文期刊
第一作者: Shen, JX
作者: Shen, JX;Fu, TD;Yang, GS;Ma, CZ;Tu, JX
作者机构:
关键词: Brassica napus;combining ability;heterosis;self-incompatibility
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: 2005 年 124 卷 2 期
页码:
收录情况: SCI
摘要: Self-incompatibility is one of the most effective approaches to utilizing heterosis in oilseed rape around the world. To evaluate the heterosis of double low self-incompatibility, the possibility of combining seed yield and oil content, and the genetic effects of parents on their hybrid progenies, a 2-year field trial using a 3 x 22 NC II mating design was conducted during the 1999-2001 growing seasons in Wuhan, China. Significant differences in seed yield per plant and seed oil content were observed among the F-1 hybrids and between F-1 progenies and their parents. However, the heterosis for seed yield per plant was much greater than that for seed oil content. Mid-parent heterosis and high-parent heterosis of seed yield per plant ranged from 5.50 to 64.11% and from -2.81 to 46.02%, while those of seed oil content ranged from -1.55 to 7.44% and -3.61 to 6.55%, respectively. Non-additive genetic effects were a major mechanism that accounted for the yield heterosis in addition to additive effects. In contrast, seed oil content heterosis was mainly dependent on an additive genetic effect. General combining ability (GCA) determined the stability of hybrid cultivars. In hybrid breeding, parental materials might be selected by the sum of GCAs and variances of special combining abilities (SCAs) of female and male parents for traits affected by both additive and non-additive effects, and by the sum of GCAs of two parents for traits controlled mainly by additive effects. Primary branches and their siliques were the most important yield traits.
分类号:
- 相关文献
作者其他论文 更多>>
-
Molecular validation of multiple allele inheritance for dominant genic male sterility gene in Brassica napus L
作者:Song, LQ;Fu, TD;Tu, JX;Ma, CZ;Yang, GS
关键词: