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| Genetic Analysis of Salinity Tolerance in Brassica campestris L.ssp. chinensis(L.)Makino var.communis Tsen et Lee. |
| QIU Yang,LI Xi-xiang* |
| Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China |
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Abstract Genetics of salinity tolerance in Pak-choi were investigated by an eight-parent complete diallel cross Ⅱ design only including direct crosses.Genetic effect analysis was estimated by Hayman method.Inheritance of salinity tolerance in Pak-choi was fitted to the additive-dominant model.Salinity tolerance was mainly controlled by dominant genes and salinity sensitivity was controlled by recessive genes.There were additive effect and dominant effect in genetic effects.However,the dominant effect played a major role and over-dominance might exist in salinity tolerance exhibition.Inheritances of salinity tolerance may be controlled by few major genes.
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Received: 29 April 2008
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