|Table of Contents|

Principal Component Analysis of Agronomic and Yield-related Traits in Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2008年01期
Page:
67-73
Research Field:
Publishing date:

Info

Title:
Principal Component Analysis of Agronomic and Yield-related Traits in Soybean
Author(s):
HAN Bing-jin; PAN Xiang-wen; JIN Jian; WANG Guang-hua; LIU Chang-jiang; and LIU Xiao-bing
Key Laboratory of Black Soil Ecology，Northeast Institute of Geography and Agro-ecology，Chinese Academy of Sciences，Harbin 150081，Heilongjiang，China
Keywords:
Soybean; Morphological traits; Correlation analysis; Principal component analysis
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2008.01.0067
Abstract:
This paper aimed at determining relations of morphological traits and yield，finding out the critical traits in answer to yield under the background of high-yield experiment and demonstration and accessional technologies in soybean，and supplied with the theoretic basis for high-yield breeding and cultivation.Three broadly used soybean varieties，4 fertilization modes and dosages were involved in this study.Principal component analysis of morphological traits along with correlation analysis of these traits and yield were carried out to determine the leading factors influencing yield according to the variations of morphological traits and yield grown in routine planting density.The results showed that there existed the largest variations for number of four-seed pod and branch number among all traits measured，whose variation coefficient (CV)was 70.15% and 68.71% respectively，implying that they were affected considerablely by such measures as variety replacing and fertilization reforming etc.and exhibited good betterment potential，and also acted as an important trait to select in breeding.As compared，the CV of 100-seed weight，node number of main stem，grain number per pod and economical coefficient were-very-low(3.82% to 7.36%)，and provided with less betterment potential.For the other traits，plant height，height of lowest pod，numbers of effective pod and so on，possessed moderate betterment potential with the variation coefficients fluctuating from 11.54% to 24.69%.The results of correlation analysis also indicated that yield correlated significantly positively with grain number per plant，shoot dry weight，effective pod number，three-seed pod number，four-seed pod number，seed number per pod，100-seed weight and economical coefficient.The results of principal component analysis of 18 traits suggested that these traits might be reduced into 4 comprehensive indexes (yield factor，plant height factor，pod number factor and node number factor of main stem)，whose cumulative contribution rate accounted for 86.85%，reflecting basically the growth and yield status of soybean grown in the routine density.It is concluded that selection of traits with high biomass，more three-seed pod，four-seed pod and low node site of podding should be emphasized in breeding，and corresponding regulation measures to enhance biomass and reduce node site of podding should also be adopted in cultivation.

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Last Update: 2014-10-09