WANG Jun-qiang,HAN Ye-hui,YU Yun-kai,et al.Effect of Drought Stress on Maize Yield and Agronomic Trait at Jointing and Tasseling-Silking Stage in Heilongjiang Province[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(01):37-41,42.[doi:10.11942/j.issn1002-2767.2016.01.0037]
拔节期和抽雄吐丝期干旱胁迫对黑龙江省玉米产量及农艺性状的影响
- Title:
- Effect of Drought Stress on Maize Yield and Agronomic Trait at Jointing and Tasseling-Silking Stage in Heilongjiang Province
- 文章编号:
- 1002-2767（2016）01-0037-05
- Keywords:
- maize; drought stress; yield
- 分类号:
- S513
- 文献标志码:
- A
- 摘要:
- 为了选育抗旱玉米品种，以12个玉米品种为材料，研究拔节期和抽雄吐丝期干旱胁迫对玉米产量及生长发育的影响。结果表明：拔节期和抽雄吐丝期干旱胁迫均会导致玉米减产，其中，抽雄吐丝期干旱胁迫减产最重，拔节期次之。抽雄吐丝期干旱胁迫导致穗长与穗粗大幅度减少，从而严重影响玉米的产量；拔节期干旱胁迫导致干物质积累减少、次生根条数和根体积减少、叶面积增长受阻严重，从而在一定程度上造成玉米减产。在供试品种中，嫩单15、龙单38、垦单10号、京单28在拔节期和抽雄吐丝期受干旱胁迫的影响较小，能获得较高产量。
- Abstract:
- In order to breed maize varieties for drought resistance,taking 12 maize varieties as materials to study the impact of drought stress on maize yield and growth at the jointing stage and tasselingsilking stage.The results showed that drought stress could lead to yield decreasing at these growing stages.The yield decreased most at tasseling and silking stage under water stress,next at jointing stage.Drought stress at tasseling and silking stage might lead to ear length and diameter lowering and the yield decreasing.Drought stress at jointing stage might lead to dry matter accumulation decreasing,secondary root numbers and volume lowering,growth of leaf area hindering and the yield decreasing.In all test materials,Nendan15,Longdan38,Kendan10 and Jingdan28 could get a higher yield whether encountered drought stress at the jointing stage or tasselingsilking stage.
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备注/Memo
收稿日期：2015-12-04
第一作者简介：王俊强（1981-），男，黑龙江省齐齐哈尔市人，硕士，助理研究员，从事玉米遗传育种研究。E-mail: august-wjq@163.com。