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Journal of Integrative Agriculture  2013, Vol. 12 Issue (3): 552-555    DOI: 10.1016/S2095-3119(13)60256-7
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Combining Ability and Breeding Potential of Rapeseed Elite Lines for Pod Shatter Resistance
 LIU Jia, MEI De-sheng, LI Yun-chang, CUI Jia-cheng, WANG Hui, PENG Peng-fei, FU Li , HU Qiong
Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, P.R.China
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摘要  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 6×6 incomplete diallel cross was conducted at two locations. Results showed that a significant variation existed among breeding lines and their F1 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 (1019B×R1, 1015B×R1, 6098B×R1, and 8908B×R1) 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.

Abstract  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 6×6 incomplete diallel cross was conducted at two locations. Results showed that a significant variation existed among breeding lines and their F1 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 (1019B×R1, 1015B×R1, 6098B×R1, and 8908B×R1) 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.
Keywords:  rapeseed       pod shatter resistance       elite lines       breeding potential  
Received: 05 November 2012   Accepted:
Fund: 

Acknowledgements This research was supported by the National Basic Research Program of China (973 Program, 2011CB109302), the National High-Tech R&D Program of China (863 Program, 2011AA10A104) and the earmarked fund for China Agriculture Research System (CARS-13).

Corresponding Authors:  Correspondence HU Qiong, Tel: +86-27-86711556, Fax: +86-27-86812729, E-mail: huqiong@oilcrops.cn     E-mail:  huqiong@oilcrops.cn

Cite this article: 

LIU Jia, MEI De-sheng, LI Yun-chang, CUI Jia-cheng, WANG Hui, PENG Peng-fei, FU Li , HU Qiong. 2013. Combining Ability and Breeding Potential of Rapeseed Elite Lines for Pod Shatter Resistance. Journal of Integrative Agriculture, 12(3): 552-555.

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