灰色关联分析在马铃薯育种数量性状上的应用

为明确数量性状与产量的相关关系,以黑龙江省农垦科学院经济作物研究所马铃薯室近几年选育的表现较好的11个品种(系)为试验材料,运用灰色系统理论,对影响马铃薯产量的7个数量性状进行灰色关联分析。结果表明:马铃薯产量与主要数量性状的关联度大小依次为收获株数、单株块茎重、主茎数、株高、冠幅、干物质含量、单株块茎数。

Application of Grey Correlation Analysis on Selection of Main Quantitative Characters in Potato

For defining the relationship between quantitative characters and yield,eleven varieties(lines),which representing the better ones and are bred by Potato Department of Industrial Crop Institute of Heilongjiang Academy of Land Reclamation Sciences in the recently years were taken as materials,on the basis of grey-system theory,seven sorts of quantitative traits which had influences on potato’s yield were analyzed by grey correlation analysis.The result showed that degree of relation from high to low between the yield of the potatoes and principal quantitative trait in sequence was number of harvest plant,tuber weight per plant,number of main stems,plant height,crown width,dry matter content and tuber number per plant.