|Table of Contents|

Effect of Different Rainfall Conditions on Root System of Different Drought Resistance Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2018年02期
Page:
202-208
Research Field:
Publishing date:

Info

Title:
Effect of Different Rainfall Conditions on Root System of Different Drought Resistance Soybean
Author(s):
YAN Chun-juan;  SONG Shu-hong;  WANG Wen-bin;  SUN Xu-gang;  WANG Chang-ling;  CAO Yong-qiang;  ZHANG Li-jun;  LI Sheng-you
（Crop Institute of Liaoning Academy of Agricultural Sciences, Shenyang 110161, China）
Keywords:
Soybean;  Drought tolerant genotypes;  Root systems
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2018.02.0209
Abstract:
In order to determine the root configuration specificity of the drought durable soybean, field experiments were conducted to investigate the effects of different rainfall conditions on the root characteristics in soybean using different soybean cultivars. The results showed that drought stress reduced the root and shoot biomass at different growth periods in soybean. The root and aboveground biomass of Liaodou 14 were higher than that of Liaodou 21 at R2 and R4 stages in the same location. The ratio of root to shoot increased gradually with the growth of soybean. Generally, drought stress increased the root-to-shoot ratio at V4, R2 and R4 phases. Drought stress significantly increased soybean root length at seedling stage but significantly reduced root length and root surface area at podding stage. Root length ratio was primarily dominated by fine root (root diameter≤2.5 mm), accounting for above 90% in each period. Soybean root surface area ratio was also dominated by fine roots, however, the higher proportion of root volume was mainly with thick roots which average root diameter was more than 2.5 mm.

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Last Update: 2018-04-02