首页|模拟降水增加对荒漠一年生植物琉苞菊表型可塑性的影响

模拟降水增加对荒漠一年生植物琉苞菊表型可塑性的影响

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为了探讨一年草本琉苞菊对降水变化的响应机制,通过模拟降水增加试验,分析降水对琉苞菊的物候特征、营养生长和生殖生长过程的影响.结果表明:降水增加30%和50%使琉苞菊进入始花期和结实期的时间分别提前了2~4 d和2~3 d;随着降水量的增加,植株高度、分枝数和叶片数均表现为增加趋势( P<0.05);降水增加也导致植株繁殖产量及生物量的增加( P<0.05).这表明降水增加对琉苞菊生活史特征的可塑性产生了显著影响.
Effect of simulated precipitation on the phenotypic plasticity of desert annual plant Hyalea pulchella
To explore the response of annual plant Hyalea pulchella to precipitation change, H. pulchella was fed with 2 levels of stimulated rainfall, which were 30% and 50% more than the average precipitation, with no addition as the control. Analysis on phenological characteristics, vegetative growth and reproduction growth were recorded. Results showed that increased precipitation swifted flowering and fruiting stages of H.pulchella in advance by 2-4 d and 2-3 d, respectively. Plant heights, number of leaves and branches were higher in the groups with increased precipitation than the control, indicating that increased precipitation exerted significant impacts on life history characteristics of H.pulchella.

annual plantplasticityreproductionbiomass

王永秋、汤灵红、罗那那、吴燕峰

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新疆农业大学草业与环境科学学院,新疆 乌鲁木齐830052

中国科学院东北地理与农业生态研究所,吉林 长春130102

中国科学院大学,北京100049

一年生植物 可塑性 繁殖 生物量

2014年度新疆研究生科研创新项目

XJGRI2014079

2016

福建农林大学学报(自然科学版)
福建农林大学

福建农林大学学报(自然科学版)

CSTPCDCSCD北大核心
影响因子:0.582
ISSN:1671-5470
年,卷(期):2016.45(6)
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