不同熟期小麦品种光合性能的初步研究  

Preliminary Study on Photosynthetic Performances of Wheat Cultivars with Different Maturing Dates

作　　者：王焕忠[1] 李雁鸣[1] 张建平[1] 张立言[1] 

机构地区：[1]河北农业大学农学系,保定071001

出　　处：《河北农业大学学报》1998年第2期1-5,共5页Journal of Hebei Agricultural University

基　　金：河北省教委博士科研资助

摘　　要：利用BAU便携式光合蒸腾测定仪系统测定了早熟品种河农326和中熟品种冀麦24号以光合速率为主的光合性能。结果表明，河农326较冀麦24号出叶早，叶片功能期长；顶部叶片光合速率到达峰值早，光合作用的高值持续期较长；起身至拔节阶段单茎光合速率较高。草茎各叶单位叶面积的平均光合速率也有一定优势，这为其早熟高产提供了光合生理基础。同时，由于其叶面积较小，在栽培实践中适当密植，是保证其获得高产的群体生理基础。In this paper, the photosynthetic performances, especially photosynthetic rates (PR) of an early maturing wheat cultivar, Henong 326, and a middle maturing cultivar, jimai No. 24,were preliminarily studied in field conditions,with BAJ portable photosynthesis and transpiration rneasuring system. The results showed that, comparing with Jimai No. 24, the leaves of Henong 326 emerged earlier and kept longer photosynthetic periods; the upper leaves on the main stem of Henong 326 reached maximum PR eralier and kept high photosynthetic Peried longer; frorn double ridge stnge to stem elongation, the Photosynthetic rates in each unit of leaf area and in each culm were all higher in Henong 326 than in Jimai No. 24. All the characteristics in photosynthesis of Henong 326 mentioned above, provided photosynthetic basis for eaxly maturity and high yield of early maturing cultivar. Howevr, because the leaf area of each single culm in early maturing cultivar was smaller, it would be important to increase ewing density and reach suitable leaf area, so as to get maximum yield.

关 键 词：小麦 早熟 品种 光合性能 

分 类 号：S512.101[农业科学—作物学]