弱光胁迫对两个不同类型花生生长发育及产量的影响  

Effects of Weak Light Stress on Development and Pod Yield of Peanut (Arachis hypogaea L.) during Seedling Stage

作　　者：吴正锋[1] 王才斌[1] 万更波 杨年华 万书波[4] 孙奎香[1] 孙学武[1] 冯昊[1] 

机构地区：[1]山东省花生研究所,山东青岛266100 [2]莱西农技站,山东青岛266200 [3]烟台市牟平区农业局,山东烟台264100 [4]山东省农业科学院,山东济南250100

出　　处：《花生学报》2008年第4期27-31,共5页Journal of Peanut Science

基　　金：国家“十一五”科技支撑计划(2006BAD21B04);山东省自然科学基金项目(Q2006D07);山东省农业科学院青年基金项目(2006YQN015)

摘　　要：大田条件下,花生幼苗期设置55%和85%两个遮光强度,遮光40d,研究了弱光胁迫对大花生品种花育22号和小花生品种白沙1016产量及生长发育的影响。结果表明,与对照相比,苗期弱光胁迫花生主茎高显著伸长,根/冠比增加,幼苗各器官的干物质、侧枝数、叶面积和侧枝/主茎比降低;盛花期延迟,单株开花量显著减少,花生荚果产量显著降低,遮光50%处理单株结果数显著降低,遮光85%单株结果数和果重均显著降低,苗期侧枝发育不良可能是造成弱光胁迫花生减产的重要原因。两品种相比,弱光胁迫下花育22号荚果产量降低幅度小,其耐荫性好于白沙1016。A field experiment was conducted to study the effects of shade during seedling stage on the growth, development and pod yield of Huayu 22 and Baisha 1016. The results showed that the peanut grow under shade had taller main stem height, fewer sum branches and leaf area, lower dry matter weight of plant and the ratio of branch to main stem compared to that grow under total light environment. Weak light stress also delayed prosperous bloom stage and decreased the flower amount per plant. As a result, peanut pod yield was decreased under shade environment. As to yield components, peanut had lower pods amount per plant under 50% shade environment, as well as lower pods per plant and pod weight under 85% shade environment. The weak branches under weak light environment was the reason of lower pod yield. By comparison of the two peanut varieties, Huayu 22 owned higher shade tolerance than Baisha 1016.

关 键 词：花生 弱光胁迫 品种类型 产量 生长发育 

分 类 号：S565.204[农业科学—作物学]