|Table of Contents|

Effect of Phosphorus Application on Morphological Characters of Root Under Drought Stress at Different Reproductive Stages in Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2007年04期
Page:
528-532
Research Field:
Publishing date:

Info

Title:
Effect of Phosphorus Application on Morphological Characters of Root Under Drought Stress at Different Reproductive Stages in Soybean
Author(s):
SHEN Zhong-bao1; QI Zhi-yong2; JIN Jian3
1Heilongjiang Academy of Agricultural Sciences，Harbin 150086;?
2Harbin Evaluation Center for Environmental Engineering，Harbin 150076;
3Northeast Institute of Geography and Agro-ecology，Chinese Academy of Sciences，Harbin 150040
Keywords:
Soybean; Water Stress; Phosphorus application; Root traits; Yield
PACS:
S565.1
DOI:
10.3969/j.issn.1000-9841.2007.04.015
Abstract:
Application of phosphorus (P)fertilizer is an important factor for improving the tolerance to water deficit in many plants.A pot experiment was conducted to identify the effects of P application on soybean adaptability to water deficit at the R1 (initial flowering) and R4 (full pod) stages through the investigation of root morphological traits and resultant yield in a soybean (Glycine maxLMerrill) cultivar (Dongnong 434).The four levels of P application were 0，7.3，14.6 and 29.2 mg kg-1soil，respectively.The three soil moisture treatments were (1) 65%~75% of field water capacity (FWC) as control，(2) 30%~40% of FWC at the R1 stage，and (3) 30%~40% of FWC at the R4 stage.Results showed that root traits and yield were significantly reduced by drought stress at different growth stages，especially at the R4 stage.Application of P enabled to alleviate the adverse effects of drought，to increase the root dry weight，root length，root surface area and consequently yield.

References:

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Last Update: 2014-10-20