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STUDY ON APETALOUS BREEDING IN RAPESEED (Brassica napus)

文献类型： 会议论文

第一作者： Fu Shouzhong

作者： Fu Shouzhong 1 ; Qi Cunkou; Pu Huiming; Zhang Jiefu;

作者机构： 1.Jiangsu Academy of Agricultural Sciences; Nanjing, Jiangsu, 210014, China

关键词： brassica napus;apetalous;breeding;advance

会议名称： International Symposium on Rapeseed Science

主办单位：

页码： 91-94

摘要： Apetalous rapeseed is regarded as an ideo-type. Comparing with normal tetrapetalous varieties, light reflection and absorption rate of florescence of apetalous population reduced by 21.78 -67.47%. Utilization rate of light energy is much better improved. Missing petals can save amount of dry matter, which required for petal constructing and developing. Energy saved can be used by the other parts of the flower. Apetalous population is able to avoid from stem rot (Sclerotinia sclerotiorum) disease infection morphologically because petal is an important vector for ascospoves dispersal. Apetalous character could prompt the growth and development of branches and pods set on the middle and low part of the plant, and advantage to increase the green surface of branch and pod. As a result, these branches could bear more pods and seeds, and the pod quality is much improved. Therefore breeding for apetalous rapeseed could be an effective way for improving its seed yield and disease resistance. At present, three apetalous inbred lines, named APL No.1, APL No.2 and APL No.3, and apetalous CMS line and its maintainer and restorers have been bred. Two RAPD marker, named S428 and S447, linked to apetalous gene have been identified, and will be used to assist apetalous rapeseed breeding.

分类号： S5

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