[1]孟凡钢,李羽,张伟,等.不同生育时期干旱胁迫对大豆根系分布和农艺性状的影响[J].大豆科学,2016,35(06):943-946.[doi:10.11861/j.issn.1000-9841.2016.06.0943]
　MEMG Fan-gang,LI Yu,ZHANG Wei,et al.Effect of Drought-Stress on Soybean Root Distribution and Agronomic Traits at Different Growth Stages[J].Soybean Science,2016,35(06):943-946.[doi:10.11861/j.issn.1000-9841.2016.06.0943]
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不同生育时期干旱胁迫对大豆根系分布和农艺性状的影响

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第35卷 期数: 2016年06期 页码: 943-946 栏目: 出版日期: 2016-11-20
Title:
Effect of Drought-Stress on Soybean Root Distribution and Agronomic Traits at Different Growth Stages
作者:
孟凡钢1; 李羽2; 张伟1; 谭国波3; 邱强1; 赵婧1; 张鸣浩1; 闫晓艳1
（1.吉林省农业科学院 大豆研究所/国家大豆工程技术研究中心吉林分中心，吉林 长春 130033； 2.公主岭市农产品质量安全监督检验站，吉林 公主岭 130124； 3.吉林省农业科学院 资环研究所，吉林 长春 130033）
Author(s):
MEMG Fan-gang1;  LI Yu2;  ZHANG Wei1;  TAN Guo-bo3;  QIU Qiang1;  ZHAO Jing1;  ZHANG Ming-hao1;  YAN Xiao-yan1
（1.Soybean Research Institute，Jilin Academy of Agricultural Sciences/National Soybean Engineering Technology Research Center Jilin Branch Center,Changchun 130033, China; 2.Agricultural Products Quality and Safety Supervision and Inspection Station of Gongzhuling, Gongzhuling 130124, China; 3.Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033, China）
关键词:
大豆; 生育时期; 干旱胁迫; 根系; 农艺性状
Keywords:
Soybean;  Growth stage;  Drought stress;  Root;  Agronomic traits
DOI:
10.11861/j.issn.1000-9841.2016.06.0943
文献标志码:
A
摘要:
以大豆品种吉育88为试材，在移动旱棚内，采用根钻挖掘法，研究幼苗期、分枝期、开花期和结荚期干旱胁迫下大豆根系干重在土壤中的分布和农艺性状的影响。结果表明：与CK相比，幼苗期轻度和重度干旱促进了21~110 cm土层根系的分布，增幅显著；分枝期和开花期出现干旱胁迫对根系影响最为严重，尤其是开花期重度干旱，根系总重降低22.55%，21~110 cm根系减少60%以上。与CK相比，幼苗期轻度干旱对株高、节数、单株荚重、粒重、百粒重无显著影响，分枝期、开花期轻度干旱多数性状受到显著影响，鼓粒期轻度干旱，仅百粒重显著降低；幼苗期至鼓粒期重度干旱，单株荚重、粒重、百粒重均显著降低，分枝期和开花期重度干旱，对各性状影响最大，株高、单株荚重、粒重的降幅都在40%以上，节数的降幅在20%以上。
Abstract:
In order to explore drought impact on soybean root distribution and agronomic traits in different growth stages, we took soybean varieties Jiyu 88 as test materials,the effect of drought stress at different growth stages on spatial distribution of soybean root dry weight was studied by soil-drilling method in the removable rainproof shelter. The results showed that compared with control, root distribution in 21-110 cm soil layer was increased significantly by mild and severe drought at seedling stage. Drought stress at branching and flowering stages had the most serious influence on root system, especially under severe drought at flowering stage, total root weight was reduced by 22.55%, root distribution in 21-110 cm soil layer was reduced by more than 60%. Mild drought at seedling stage did not had significant effect on plant height, nods, pods weight per plant, seed weight, and 100-seed weight. Most agronomic traits were significantly affected by mild drought at branching and flowering stages, while only 100-seed weight decreased significantly by mild drought at filling stage. Pods weight, seed weight and 100-seed weight dropped significantly by severe drought from seedling stage to filling stage. Severe drought at branching and flowering stages had the strongest impact on agronomic traits, such as plant height, pods weight per plant, seed weight decreased by more than 40%, and nods decreased by more than 20%.

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备注/Memo

基金项目：吉林省科技厅重点科技成果转化项目（20150307026NY）；吉林省创新工程-自由创新项目。

第一作者简介：孟凡钢（1978-），男，硕士，副研究员，主要从事大豆栽培生理研究。 E-mail:mengfg2013@163.com。
通讯作者：闫晓艳（1960-），女，研究员，主要从事作物栽培研究。E-mail:yanxy8548@126.com；张伟（1979-），男，博士，研究员，主要从事大豆生理与栽培研究。E-mail:zw.0431@163.com。

更新日期/Last Update: 2016-12-09