CAJ | 학술논문

采用盆栽方法研究了遮阴对不同玉米品种叶片形态和功能的影响.结果表明在全生育期遮阴条件下玉米叶片长宽比增大,叶生物量比和叶质量分数增大,叶面积比增大,比叶面积增大,比叶质量减小;各生育期玉米叶片光合速率随遮阴程度的加重降低幅度加大,玉米开花期叶片光合速率降低幅度大于大喇叭口期和灌浆中期;玉米叶片叶绿素a含量、叶绿素b含量、叶绿素总量增加,叶绿素a/叶绿素b降低.遮阴后叶绿素含量的增高,特别是叶绿素b含量的增加是玉米对低光胁迫的一种生态适应.图1,表2,参16.
채용분재방법연구료차음대불동옥미품충협편형태화공능적영향.결과표명재전생육기차음조건하옥미협편장관비증대,협생물량비화협질량분수증대,협면적비증대,비협면적증대,비협질량감소;각생육기옥미협편광합속솔수차음정도적가중강저폭도가대,옥미개화기협편광합속솔강저폭도대우대나팔구기화관장중기;옥미협편협록소a함량、협록소b함량、협록소총량증가,협록소a/협록소b강저.차음후협록소함량적증고,특별시협록소b함량적증가시옥미대저광협박적일충생태괄응.도1,표2,삼16.
The pot experiment was carried out to study the effects of shading at whole growth stage on the morphology and function of leaves for different maize varieties.The results showed that shading in all growth stage increased length and width ratio of leaf, leaf mass ratio,leaf mass fraction,leaf area ratio and specific leaf area, but decreased specific leaf weight. With the increase of shading degrees, photosynthetic rate of maize leaf at each growth stage were decreased,and the decrease of photosynthetic rale at anthesis was greater than that at booting and middle filling stage. Shading at the whole growth stage increased contents of chl a ,b and contents of chl a+ b,but decreased chl a/b.The increase of chlorophyll content after shading, especially chl b content, was an ecological adaptation to low light stress.