|Table of Contents|

Effects of High Temperature and Drought Stress on Main Agronomic Traits of Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2017年04期
Page:
554-560
Research Field:
Publishing date:

Info

Title:
Effects of High Temperature and Drought Stress on Main Agronomic Traits of Soybean
Author(s):
XING Xue-ying;  HUO Jian-ling;  YU Jin-qiu;  YANG Xue;  ZHOU Jing-wen;  WANG Xin-yi;  WEI Bin;  BAI Xi
（College of Life Science, Northeast Agricultural University,Harbin 150000, China）
Keywords:
Soybean;  High temperature drought;  Agronomic traits
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2017.04.0554
Abstract:
Drought and high temperature often occur simultaneously. That will exacerbate the damage to soybean.In order to understand the effect of these two double threats, high temperature and drought, on agronomic traits of soybean, selected 160 soybean varieties were selected in the experiment with the adoption of two-year repeated experiments in the same field. The soybeans were cultivated in high temperature and drought and normal conditions respectively, and then were analyzed such traits as the number of pods of a single plant, number of branches, 100-seed weight, plant height, seed number of an individual soybean . The conclusions are arrived at as follows: high temperature and drought make the height of tested soybeans, branches numbers of stem, seed numbers per plant, number of pods of a soybean and 100-seed weight undergoing a downward trend, among which partly showing upward trend or constant. The number of pods per plant decreased by 62%, the number of grains per plant decreased by 60%, the 100-seed weight decreased by 49%, the plant height and branch number decreased by 34% and 36%.The order of the traits decline is the number of pods per plant, the number of grains per plant, the 100-grain weight, the branch number and the plant height.The height of 6% of soybeans varieties increased in the course of high temperature and drought, while 5% unchanged. Pods of a single plant have not seen increase and 3% varieties remained constant. Branches numbers witnessed 15% increased, 7% unchanged; 9% of seed number of an individual soybean raised and 4% unchanged; 4% of 100-seed weight increased, 3% not change.Under these two living conditions, the relevance among height of soybeans, pods of a single soybean, seed numbers per plant, branches numbers of stem does not change obviously. However, relevance between 100-seed weight and other traits changes dramatically. On the other hand, conclusion can be drawn that variation coefficients of soybean traits varies significantly except the height of soybean under the environment of high temperature and drought.

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Last Update: 2017-08-14