株型对小麦光合性状及光合环境的影响研究

选用豫麦47(紧凑型)、豫麦34(中等紧凑)及山东优麦3号(松散型)3个品种为研究对象,通过用光合测定仪测光合速率、二氧化碳浓度、光照强度,用叶面测量仪测叶面积等方式进行研究.研究表明:小麦的株型对其光合性状及光合环境的影响较大,株型紧凑的竖叶型品种较株型松散的披叶型品种在光照强度、消光率、光合速率等方面具有明显的株型优势.竖叶型品种下部叶片的受光较披叶型好,单位叶面积消光明显低于披叶型品种,可以充分发挥下层叶片的光合潜力,延长功能期,对植株健壮生长有利.因此,在选择高产品种时,株型对搭建高产结构是非常必要的.

Researches on Influence of Plant Form on Photosynthesis Properties and Environments in Wheat

Results from the field test in 2004 with 3 varieties of Yumai 47(compact-type),Yumai 34(mid Compact-type) and Shandong Youmai 3(Imcompact-type) by using the photosynthesis measuring apparatus and the foliage measuring apparatus show that wheat plant form has greater influence on the properties and environments of photosynthesis.The erecting leaf of compact-type variety is better than the droopy leaf of imcompact-type variety on light intensity,consuming light rate,photosynthesis rate.Compared with the droopy leaf of imcompact-type variety,the erecting leaf variety has better ability of accepting light in lower leaves and lower consuming light per unit leaf.The erecting leaf variety can exert the photosynthesis potential of lower leaves to the full and lengthen the leaf function term.So,when selecting the high yield variety,the plant form is very important.