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Relationship Between Allelopathic Effects and Functional Traits of Different Allelopathic Potential Rice Accessions at Different Growth Stages

机译:不同化感潜力水稻品种不同生育期化感效应与功能性状的关系

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摘要

In this study, effects of temperature, light and their interactions on allelopathic effects and the functional traits specific leaf area (SLA) and stem mass fraction (SMF) of different allelopathic potential rice accessions at different growth stages were analyzed. The main results were as follows: Allelopathic responses to temperature and light varied with different allelopathic potential rice accessions at different growth stages. With the rise of temperature and the extension of photoperiod, allelopathic effect increased firstly and then decreased at 2–3 leaf stage, but increased constantly at the 4–5 and 7–8 leaf stages in strong allelopathic rice accessions [O. longistaminata, F1(O. longistaminata × RD23), F2(RL159 and RL169)]. Temperature had significant impact on allelopathic effect without considering light factors, but light showed little effect on rice allelopathy at the same temperature conditions. The greatest allelopathic effect was attained with moderate temperature and long photoperiod at 2–3 leaf stage in strong allelopathic rice accessions, but all the rice accessions showed weak allelopathic effects at the low temperature condition (15 oC/10 oC), and the influence of different factors on allelopathy followed a general trend as temperature > leaf stage > light, indicating that among the multiple factors impacting rice allelopathy, temperature was the main factor. Allelopathic characteristics of F1and F2to various temperature and light were similar to O.longistaminata,showing that allelopathic genes from wild rice can be expressed in its descendants. Temperature and light also had significant effects on SLA and SMF, and rice allelopathy was closely correlative to SLA in strong allelopathic rice accessions at the 4–5 and 7–8 leaf stages, but there was no correlation between rice allelopathy and SMF at different growth stages. These results suggested that rice adjust the relationship between allelopathy and SLA and adapt to the varied environments, and that high temperature and long photoperiod can enhance rice allelopathic activity.
机译:在这项研究中,分析了温度,光照及其相互作用对化感作用的影响,以及不同化感潜在稻种在不同生育阶段的功能性状比叶面积(SLA)和茎质量分数(SMF)的功能。主要结果如下:在不同生育阶段,不同化感潜力水稻品种对温度和光照的化感反应不同。随着温度的升高和光周期的延长,化感作用在强化感水稻品种中先后升高,然后在2-3叶期降低,但在4-5叶期和7-8叶期则不断提高[O. longistaminata,F1(O。longistaminata×RD23),F2(RL159和RL169)]。温度在不考虑光照因素的情况下对化感作用有显着影响,但在相同温度条件下光照对水稻化感作用影响很小。在强化感水稻品种中,适度的温度和较长的光周期在2-3叶期达到了最大的化感作用,但在低温条件下(15 oC / 10 oC),所有水稻品种均表现出较弱的化感作用,并且不同的化感作用因素呈总体趋势,即温度>叶期>光照,表明影响水稻化感作用的多种因素中,温度是主要因素。 F1和F2在不同温度和光照条件下的化感特性均与O.longistaminata相似,表明野生稻的化感基因可以在其后代中表达。温度和光照对SLA和SMF也有显着影响,在4-5和7-8叶期强化感水稻品种中,水稻化感作用与SLA密切相关,但不同生长时期的水稻化感作用与SMF之间没有相关性阶段。这些结果表明水稻调节了化感作用与SLA之间的关系,并适应了不同的环境,高温和长时间的光照可以增强水稻的化感活性。

著录项

  • 来源
    《水稻科学(英文版)》 |2018年第1期|32-41|共10页
  • 作者单位

    Institute of Agricultural Environment and Resources Research,Yunnan Academy of Agricultural Sciences,Kunming 650205,China;

    Institute of Agricultural Environment and Resources Research,Yunnan Academy of Agricultural Sciences,Kunming 650205,China;

    Institute of Agricultural Environment and Resources Research,Yunnan Academy of Agricultural Sciences,Kunming 650205,China;

    Food Crops Research Institute,Yunnan Academy of Agricultural Sciences,Kunming 650205,China;

    Department of Applied Science,Faculty of Agriculture,Kagawa University,Miki,Kagawa 761-0795,Japan;

    Department of Biology,Trinity Western University,7600 Glover Road,Langley,British Columbia V2Y1Y1,Canada;

  • 收录信息 中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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  • 入库时间 2022-08-19 04:05:57
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