Combining Ability and Breeding Potential of Rapeseed Elite Lines for Pod Shatter Resistance
Combining Ability and Breeding Potential of Rapeseed Elite Lines for Pod Shatter Resistance
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油菜籽抗碎粒优良品系的组合能力和育种潜力
DOI：
10.1016/s2095-3119(13)60256-7
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发表时间：
2013-01-01
影响因子：
4.8
通讯作者：
Hu Qiong
中科院分区：
文献类型：
--
作者：
Liu Jia;Mei De-sheng;Hu Qiong
油菜籽的抗破荚能力对于现代农业生产具有重要意义。为了确定优良自交系的配合能力和油菜杂交种在抗破荚能力方面的育种潜力，在两个地点进行了 6x6 不完全双列杂交分析。结果表明，育种系及其F-1杂种之间的抗落荚指数（SRI）、荚长和宽存在显着差异。荚果抗碎性与荚果长度呈显着正相关。对于落荚性状，一般配合力（GCA）效应（GCA=1.58）比特定配合力（SCA）效应（SCA=0.20）发挥更重要的作用。优良品系 R1、1019B 和 1055B 在抗荚果破碎方面表现出显着的积极 GCA 效果。推荐4个平均性能高、SCA效应良好的杂交组合（1019BxR1、1015BxR1、6098BxR1和8908BxR1）用于长江中游机械收获新杂交种的开发。
Pod shatter resistance of rapeseed is of great importance for modern farming practice. In order to determine the combining ability of elite inbred lines and the breeding potential of rapeseed hybrids in terms of pod shatter resistance, analysis of a 6x6 incomplete diallel cross was conducted at two locations. Results showed that a significant variation existed among breeding lines and their F-1 hybrids for pod shatter resistant index (SRI), pod length and width. Pod shatter resistance was significantly positively correlated with pod length. The general combining ability (GCA) effects (GCA=1.58) played a more important role than specific combining ability (SCA) effects (SCA=0.20) for pod shatter trait. The elite lines R1, 1019B and 1055B displayed significant positive GCA effects for pod shatter resistance. Four crosses (1019BxR1, 1015BxR1, 6098BxR1, and 8908BxR1) with high mean performance and positive SCA effects were recommended for developing new hybrids for mechanical harvest in the middle reaches of the Yangtze River.