|Table of Contents|

Screening and Identification of Summer Sowing Soybean Varieties in Southwest China(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2015年06期
Page:
921-926
Research Field:
Publishing date:

Info

Title:
Screening and Identification of Summer Sowing Soybean Varieties in Southwest China
Author(s):
TAN Qian-jun;  WU Yu-shan;  LIU Wei-guo;  YANG Feng;  WU Xiao-ling;  YANG Wen-yu
College of Agriculture，Sichuan Agricultural University，Chengdu 611130,China
Keywords:
Summer soybean;  Agronomic trait correlation analysis;  Multiple linear stepwise regression;  Path analysis;  Principal component cluster analysis
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2015.06.0921
Abstract:
Appropriate germplasm in Southwest China were selected from 136 summer soybean materials, by comprehensive analysis and evaluation on 12 agronomic and yield traits. The results showed that the coefficient of variation in phenotypic traits was between 6.30% and 44.07%, which illustrated that genetic diversity of morphological traits was relatively rich Correlation analysis showed that the seed weight per plant had significant positive correlated with effective branch number, nodes of main stem, pods per plant, seeds per pod, vegetative period and growth period, and significant negative correlated with height of the lowest branches.Multiple linear stepwise regression showed that pods number per plant, seed number per pod, 100-seed weight and height of the lowest branch could explained 89.9% of the variation of the dependent variables.Path analysis indicated that seeds per pod displayed the highest positive direct effect, and the lowest branch height displayed negatively direct effect and comprehensive effect. The comprehensive effect of 4 traits to yield was ranked in order of pods per plant ＞ seeds per pod ＞ 100-seed weight ＞ the lowest branch height. Principal component analysis showed that three independent comprehensive components were extracted from 12 traits, which reflected 65.08% information.According to composite score calculated from principal component and index weight 136 soybean materials were clustered into four types. Eight soybean materials of class I, which had higher plant height and bottom pod height, lower lowest branch height, more nodes number, higher pods per plant and seeds per pod, smaller 100-seed weight, longer growth period, was suitable for breeding materials in Southwest China.

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Last Update: 2015-12-30