不同遮荫度对观赏辣椒苗期形态和生理生化指标的影响  

Effect of Different Shade Levels on the Morphology and Physiological and Biochemical Indexes During Seedling Stage in Ornamental Pepper

作　　者：许红娟[1] 巩振辉[1] 贾志银[1] 黄炜[1] 李大伟[1] 逯明辉[1] 陈儒钢[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《北方园艺》2010年第14期1-4,共4页Northern Horticulture

基　　金：国家"十一五"科技支撑计划资助项目(2006BAD01A7;2008BADB1B04);陕西省"13115"科技创新工程重大科技专项资助项目(2008ZDKG-03)

摘　　要：研究了遮荫度20%、40%、60%、80%,对照为正常光照下观赏辣椒苗期的形态和生理生化指标的变化。结果表明:在不同遮荫度下,观赏辣椒的株高、株幅、叶长、叶宽表现出显著或极显著差异,其中在遮荫度20%下,GS3-1和GS2品种的株高和株幅达到最大值;在遮荫度40%下,其叶长、叶宽达到最大值。随遮荫度增大,观赏辣椒和P101体内MDA含量呈现上升的趋势;生物量增量呈现完全降低趋势;叶绿素相对含量和POD酶活性呈现逐渐降低趋势;可溶性蛋白表现出不规律的变化。遮荫改变了观赏辣椒苗期的形态和生物量增量,同时生理生化指标也相应发生了变化,观赏辣椒在苗期对光环境具有一定的适应能力,严重遮荫不利于其后期正常生长发育。Studied the influence of different shading conditions 20%,40%,60%,80% on morphological parameter and biochemical and physiological parameters,taking normal sunlight conditions as the contrast.The results showed the height,crown width,leaf length and width would present extremely different.For Cv.GS3-1 and Cv.GS2,when the shading intensity was 20%,the height and crown width were getting the maximum,leaf length and leaf width were getting at 40%.Ornamental peppers and P101 content of MDA increased directly,biomass increments were decreased.The relative content of chlorophyll and activity of enzyme POD decreased;the content of soluble protein changes irregularly.The shading conditions changed ornamental pepper＇s morphology and biomass increments in seedling stage;biochemical and physiological parameters changed too at the same time,to get know adaptability of ornamental pepper in low light level,offer reference for landscape and interior design.That ornamental peppers was able to acclimate to a large radiation scale.

关 键 词：观赏辣椒 遮荫度 形态特征 生理指标 

分 类 号：S641.3[农业科学—蔬菜学]