Pan Xiangwen,Li Wenbin Li Yanhua Wang Guodong Wang Guanghua Jin Jian.APPLICATION OF PRINCIPAL COMPONENT ANALYSIS ON EVALUATION THEDROUGHT-RESISTANCEOF SOYBEAN GENOTYPES[J].Soybean Science,2006,25(04):379-384,389.[doi:10.11861/j.issn.1000-9841.2006.04.0379]
主成分分析在大豆抗旱性评价上的应用*
- Title:
- APPLICATION OF PRINCIPAL COMPONENT ANALYSIS ON EVALUATION THEDROUGHT-RESISTANCEOF SOYBEAN GENOTYPES
- 文献标志码:
- A
- 摘要:
- 以收获期 10 项指标的相对抗旱系数为基础 ,应用主成分分析方法对黑龙江省 202 份大豆基因型进行抗旱性评价研究 。结果表明,这些参试材料在抗旱性上存在广泛的遗传变异,根据主成分分析得到的综合评价指标 ,可划分为 5个不同抗旱等级 。进一步的分析表明, 干旱处理下株粒重、一粒荚率、三粒荚率以及它们的抗旱系数与大豆种质的抗旱性紧密相关,可作为大豆基因型抗旱性筛选的有效指标 。其中, 相对株粒重和相对三粒荚率随着抗旱性的提高而显著增加 ,相对一粒荚率则与之相反 。同时, 揭示出抗旱性强大豆基因型往往具有较低的产量潜力 ,而对干旱敏感的大豆基因型则表现出较高的产量潜力 ,表明大豆基因型抗旱性与产量之间并不存在对应关系,在大豆抗旱育种上应区别加以利用。
- Abstract:
- Drought resistance of 202 soybean materials was evaluated by using the method of principal com-ponent analysis according to relative drought resistance coefficient of 10 indexes at harvest stage. The re-sults showed that there were broad genetic variations in drought resistance for soybean materials includedand these materials were divided into 5 different grades of drought resistance based on the comprehensiveevaluation index from principal component analysis. Further research indicated that plant grain weight ,percentages of one-grain pod and three-grain pod under drought treatment and their relative coefficients ofdrought-resistance correlated tightly with drought resistance of soybean germplasm and might be used aseffective assessment indexes for drought resistance of soybean. Among them , relative plant grain weightand relative percentage of three-grain pod increased with enhance ment of drought resistance, for relativepercentage of one-grain pod in reverse. It was also indicated that soybean germplasm with good drought re-sistance performed comparatively badly in yield and soybean germplasm sensitive to drought treatment ex-erted well in yield , implying that there did not exist corresponding relationship between drought resistanceand yield in soybean, and soybean germplasm with different drought resistance should be utilized discrimi-natively in breeding.
参考文献/References:
1 邹琦. 作物抗旱生理生态研究[ M] . 济南:山东科学技术出版社.1993, 31 - 332.
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备注/Memo
通讯作者;潘相文(1972- ), 男, 助理研究员, 在读博士, 主要从事大豆和菜用大豆育种及其逆境生理生态研究。Email:panxw52579 @yahoo. com