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《Journal of Triticeae Crops》 2008-06
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Leaf Area,Chlorophyll and Dry Matter Accumulation of Wheat Xinong 979

LI Xue-jun,LI Li-qun,ZHANG Rui-xuan,WU Yue-cheng,LIU Shun,WANG Hui(College of Agriculture,Northwest A&F University,Yangling,Shaanxi 712100,China)  
In order to study Xinong 979's leaf function,dry matter accumulation and the transportation for providing the scientific basis of standardized cultivation of high effective,high yield and good quality.Xinong 979 and Xinong 9814 were used as experimental materials,and Xiaoyan 22 as the control to study the rules of leaf area,chlorphyll content and dry matter accumulation at the different growth stage.Result showed the heading date is a turning point at which the single stem leaf area changed from high to low.The biggest single stem leaf area of Xinong 979 is 72.78 cm2,Xiaoyan 22 is 101.69 cm2.Xinong 979'leaf life is shorter than Xiaoyan 22.Meanwhile,the chlorophyll content of XiNong 979 is lower than that of Xiaoyan 22,the dry matter accumulation is the same as Xiaoyan 22,but from filling to maturity,the accumulation of single grain weight of Xinong 979 is clearly higher than that of Xiaoyan 22,the yield of Xinong 979 was increased 7.4% than Xiaoyan 22.Those findings showed that Xinong 979's leaf photosynthetic rate is high,Photosynthesis product transport more quickly after anthesis.The short Photosynthesis time is main limit factor of Xinong 979.In practices,spraying fertilizer on the leaf surface at flowing time is an important way to postpone leaf scnences,maintain leaves Photosynthesis and increase dry matter accumulation after anthesis.In addition,this paper also discussed the breeding method of big ear varieties.
【Fund】: 西北农林科技大学青年学术骨干支持计划项目;; 农业部“跨越计划”项目(2006跨08)
【CateGory Index】: S512.1
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