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| Analysis of Combining Abilities of Some Agronomically Traits of 4xMtCMS and F1 in Pakchoi |
| KONG Yan-e1，2，HAN Ye-fei1，ZHANG Shu-ning1*，LI Jun-xing1，LIU Hui-ji1 |
| 1College of Horticulture，Key Laboratory of Crop Genetics and Germplasm Enhancement，Nanjing Agricultural University，Nanjing 210095，Jiangsu，China; 2Modern Agricultural Technology Demonstration Park of Jinan，Jinan 251600，Shandong，China |
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Abstract 15 crossing combinations are made by 4xMtCMS and 5 parents of pakchoi〔Brassica campestris L. ssp. chinensis（L.）Makino var. communis Tsen et Lee〕with the method of complete diallel cross（half mating design）．The result shows that 16 agronomical characters are controlled by the additive gene effect，dominance effect and interaction effect．And among 6 parents 07P-10 is a best parent，as it has highest general combining ability．It is excellent parent materials for the most of traits．The sterile lines 07P-2 is a better parent for quality genetic improvement research in autotetraploid pakchoi．The analysis of SCA effects show that the SCA effects of different characters in the same parent are obviously different，so does the same character in different parents．According to the comprehensive performance of the SCA effects，07P-2×07P-7 and 07P-2×07P-10 have application of great value because they include sterile lines 07P-2．
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Received: 21 June 2011
Published: 29 August 2011
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