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APPLICATION OF PRINCIPAL COMPONENT ANALYSIS ON EVALUATION THEDROUGHT-RESISTANCEOF SOYBEAN GENOTYPES(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2006年04期
Page:
379-384,389
Research Field:
Publishing date:

Info

Title:
APPLICATION OF PRINCIPAL COMPONENT ANALYSIS ON EVALUATION THEDROUGHT-RESISTANCEOF SOYBEAN GENOTYPES
Author(s):
Pan Xiangwen 1;  2 　 Li Wenbin 1 　 Li Yanhua 2 　 Wang Guodong 2 　 Wang Guanghua 2 　 Jin Jian 2
(1. Key Lab. of Education Department For Soybean Biology , Northeast Agricultural University , Harbin150030;2. Key Lab. of Heilongjiang Province for Black Soil Ecology , Northeast Institute ofGeography and Agricultural Ecology , CAS , Harbin 150040)
Keywords:
Soybean ; Evaluation of drought-resistance ; Principal component analysis
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2006.04.0379
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.

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Last Update: 2016-12-16