XING Xue-ying,HUO Jian-ling,YU Jin-qiu,et al.Effects of High Temperature and Drought Stress on Main Agronomic Traits of Soybean[J].Soybean Science,2017,36(04):554-560.[doi:10.11861/j.issn.1000-9841.2017.04.0554]
高温干旱混合胁迫对大豆主要农艺性状的影响
- Title:
- Effects of High Temperature and Drought Stress on Main Agronomic Traits of Soybean
- Keywords:
- Soybean; High temperature drought; Agronomic traits
- 文献标志码:
- A
- 摘要:
- 干旱与高温常常相伴发生,会使大豆受害程度加剧。为了解高温干旱双重胁迫对大豆农艺性状的影响,选取了160个大豆品种,采用一点两年重复实验,在高温干旱双重胁迫和正常条件下进行种植,分析单株荚数、分枝数、百粒重、株高、单株粒数等性状。结果表明:高温干旱双重胁迫使大豆群体株高、主茎分枝数、单株粒数、单株荚数、百粒重呈下降趋势,分别下降34%、36%、60%、62%、49%,其中也有部分材料性状会有升高或不变,胁迫下株高有6%的材料变高、5%的材料没影响,单株荚数未见增加的材料,有3%材料不变,分枝数有15%材料增加,7%不变,单株粒数有9%材料升高、4%不变,百粒重有4%增加、3%未见变化。在两种生境下,株高、单株荚数、单株粒数、主茎分枝数之间相关性变化不明显,百粒重与其它性状相关性发生明显变化,同时发现两种环境下性状变异系数除株高外变化都很明显。
- 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.
参考文献/References:
[1]Nachappa P,Culkin C T,Saya P M,et al.Water stress modulates soybean aphid performance,feeding behavior,and virus transmission in soybean[J]. Frontiers in Plant Science, 2016,7(114):1-15.
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备注/Memo
基金项目:国家自然科学基金(31371544)。