毕节市苦荞种质资源农艺性状的鉴定与评价.doc
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1、毕节市苦荞种质资农艺性状的鉴定与评价【摘要】:p 】:对毕节市不同县乡镇32份苦荞资的单株粒重与主要农艺性状进展相关和通径分析p 。结果说明,5个相关性状对单株粒重的影响大小顺序为千粒重、单株粒数、株高、主茎节数、主茎分枝数。多元回归分析p 说明,千粒重、单株粒数、株高是影响单株粒重的主要因素。通径分析p 发现,千粒重和单株粒数对单株粒重的直接效应较大,是影响单株粒重的主要因素,而株高的直接效应最小,且为负效应。因此,苦荞育种时,在考虑增加千粒重和单株粒数这两个主要因素的同时,应适当控制株高。【关键词】:p 】:苦荞;农艺性状;相关分析p ;回归分析p ;通径分析p 中图分类号:S517;S5
2、02.4 文献标识码:A 文章编号:0439-811420_15-3604-04Abstract: 32 resources of Fagopyrum tataricumL. Gaertn from different township and county in Bijie City were studied by using correlation and path analysis.The results showed that the 5 relative factors on the seed weight per plant were in order as follows: th
3、e 1000-seed weightthe seeds per plant the plant height the nodes of main stem the branches of main stem.Multiple regression analysis showed that the 1000-seed weight, the seeds per plant and the plant height were the main traits affecting the seed weight per plant.The path analysis indicated that th
4、e direct effect of the 1000-seed weight and the seeds per plant was bigger, and both of them were the main factors affecting the seed weight per plant, whereas the plant height had the minimum negative direct effect affecting the seed weight per plant.Therefore, increasing the 1000-seed weight and t
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- 毕节市 种质 资源 农艺 性状 鉴定 评价
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