|Table of Contents|

Research on the Relationship between Agronomic Traits and Yield of Soybean in Relay Strip Intercropping(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2015年03期
Page:
394-401
Research Field:
Publishing date:

Info

Title:
Research on the Relationship between Agronomic Traits and Yield of Soybean in Relay Strip Intercropping
Author(s):
WU Yu-shan;  GONG Wan-zhuo;  TAN Qian-jun;  CAI Feng;  WANG Yan-ling;  LU Wei-guo;  WU Xiao-ling; YANG Wen-yu
College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
Keywords:
Relay strip intercropping;  Soybean;  Multiple linear stepwise regression;  Path analysis;  Principal component analysis;  Yield.
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2015.03.0394
Abstract:
A field experiment was conducted on 133 soybean germplasms by growing under shade (simulated the relay strip ingtercropping system) to analyze the relationship between agronomic traits and yield of 133 soybean germplasms. The results showed that: the coefficient of variation in phenotypic traits was between 6.44%-52.49% and the average Shannon’ index was 1.929 3, which illustrated that the germplasms had a relatively rich morphological diversity Correlation analysis showed that the yield was significant positive correlated with number of nodes on main stem, effective branch number, pods per plant, seeds per pod, branch seed weight, branch seed weight ratio, vegetative growth period and growth period.Multiple linear stepwise regression showed that the yield was significant positive correlated with seven agronomic characters, ranking of positive effect factor as follows: seeds per pod ＞ branch seed weight ＞100-seed weight ＞ number of nodes on main stem ＞ pods per plant ＞ vegetative growth period, negative effect factor was plant height- Path analysis showed that ranking of comprehensive effect to yield as follow: branch seed weight ＞ pods per plant ＞ number of nodes on main stem ＞ vegetative growth period ＞ seeds per pod ＞ plant height ＞100-seed weight. According to the principal component score and the weight calculation of this composite score, 133 soybean varieties were clustered into four categories. The most suitable category for relay strip intercropping expressed more effective branch, more pods per plant, more seeds per pod, more nodes on main stem, longer vegetative growth period and growth period, moderate plant height, lower 100-seed weight, and higher bottom pod, Therefore, soybean varieties showing those traits can be selected in relay strip intercropping.

References:

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Last Update: 2015-07-15