玉米不同自交系叶片色素及其与光合速率关系的研究

对１７个玉米自交系四个主要生育时期的叶片色素含量的比值，比叶重及其与光合速率关系的分析表明：（１）自交系间叶绿素含量和比叶重差异较大，比值ｃｈｌａ／ｂ和ｃａｒ／ｃｈｌ差异较小；

Relationship Between the Content of Pigments and Ratio of Photosynthesis for Various Inbred Lines in Maize (Zea mays L.)

The content and ratio of pigment, specific leaf area and photosynthesis efficiencies of 17 corn inbred lines were examined during late periods of growth and development.The results were as follow: 1. The process of pigment decreasing was slowly at first and then quickly, the chla/b and car/chl (Carotenoid/Chlorophyll) were relatively steady and arrived high value in flowering and dough stage respectively. 2. The content of chloropyll and specific leaf area were markedly different but chla/b and car/chl were not different among 17 inbred lines; 3. The content of chlorophyll and photosynthetic rate was positive correlated but car/chl was negative one. The 17 inbred lines were divided into 5 kinds of types by photosynthetic rate and content of chlorophyll. The relationship between feature of inbred lines in high photosynthesis and pigment was discussed in this paper.