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Position: Home > Articles > Temporal Dynamics of Leaf Functional Traits and Biomass Allocation in Alfalfa Chinese Journal of Grassland 2016,38 (2) 41-46+71

陇东苜蓿叶功能性状和生物量分配的时间动态

作  者:
王振南;尤菲菲;杨梅;段兵红;陆姣云;杨惠敏
单  位:
草地农业生态系统国家重点实验室/兰州大学草地农业科技学院
关键词:
紫花苜蓿;环境适应性;生长阶段;叶性状;物质分配
摘  要:
在智能日光温室环境下,以陇东苜蓿为材料,研究了其单茬生育期内生物量分配和叶功能性状变化,从时间动态角度探讨了陇东苜蓿的适应性机制。结果表明:随植株逐渐发育成熟,陇东苜蓿根重、茎重、叶重、冠重、总重、根生物量比、根冠比、叶面积、叶面积指数呈增加趋势,叶生物量比、叶重分数、叶厚呈降低趋势,茎生物量比、叶宽、叶长宽比、叶面积比、比叶面积变化相对较平缓;叶长在出苗后生长前期(30~66d)呈不断增加趋势,分枝期(66d)时达到最大值,后期缓慢减小。
译  名:
Temporal Dynamics of Leaf Functional Traits and Biomass Allocation in Alfalfa
作  者:
WANG Zhen-nan;YOU Fei-fei;YANG Mei;DUAN Bing-hong;LU Jiao-yun;YANG Hui-min;State Key Laboratory of Grassland Agro-ecosystems,College of Pastoral Agriculture Science and Technology,Lanzhou University;
关键词:
Alfalfa;;Environmental adaptability;;Growth stage;;Leaf trait;;Biomass allocation
摘  要:
The changes in biomass allocation and leaf functional traits of alfalfa(Medicago sativa L.cv.Longdong)were investigated at different growing stages in one cut in a greenhouse.Lucerne root mass,stem mass,leaf mass,crown mass,total mass,root mass/total mass,root mass/crown mass,leaf area and leaf area index tended to increase with days after emergence.And leaf mass/total mass,leaf mass/crown mass and leaf thickness tended to decrease with days after emergence,while stem mass/total mass,leaf width,leaf length/width,leaf area/total mass and specific leaf area hardly changed.However,leaf length increased till 66 days after emergence and afterwards decreased gradually.

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