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

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Rice science 2018年第1期25卷 32-41页

作者： XU Gaofeng SHEN Shicai ZHANG Fudou ZHANG Yun Kato-Noguchi HISASHI Roy Clements DAVID Institute of Agricultural Environment and Resources Research Yunnan Academy of Agricultural Sciences Food Crops Research Institute Yunnan Academy of Agricultural Sciences Department of Applied Science Faculty of Agriculture Kagawa University Department of Biology Trinity Western University

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 *** main results were as follows:Allelopathic responses to temperature and light varied with different allelopathic potential rice accessions at different growth *** 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[***,F1(***×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 *** 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(15oC/10oC),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 *** characteristics of F1 and F2 to various temperature and light were similar to ***,showing that allelopathic genes from wild rice can be expressed in its *** 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 *** results suggested that rice adjust the relationship between allelopathy and SLA and adapt to the varied environments,and that high temperature and long phot

关键词： rice allelopathy environment change functional trait specific leaf area stem mass fraction temperature-light interaction

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