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《中国油料》 1991-03
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A PRELIMINARY STUDY OF EVALUATING SUNFLOWER CROSS-BREEDS BY GREY RELATED DEGREE ANALYSIS

Hu Qilin Xiang Lijun(Institute of Industrial Crops,Xinjiang Academy of Agricultural Sciences,Urumqi)  
In this paper,the grey system theory-a method of grey related degree analysis was utilized to analyse sunflower cross-breeds.The comprehensive and quantitative study and survey to some important economic characters were made diameter of the flower disc,the seeds weight of single disc,the weight of 100-seed and yeild ect.Having calculated out the related coefficient and the weighted related degree between various cross-breedsand the "ideal cross-breed".Through comparising the weighted relateddegrees of these cross-breads,then made an all-sided,comprehensive,quantitative and objective evaluation.The result showed above method keep identical with the method of comparising individual yeild.However,the former was simple and efficient.
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