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《Journal of Triticeae Crops》 2009-06
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Effect of Nitrogen Application Rates and Plant Densities on the Main Quality Characters of the Two-line Hybrid Wheat Variety Mianzamai 168

ZHOU Qiang,LI Sheng-rong,LEI Jia-rong,DU Xiao-ying,TAO Jun,OU Jun-mei,REN Yong,PANG Qi-hua(Miangyang Research Institute of Agricultural Science/Mianyang Branch of National Wheat ImprovementCenter,Mianyang,Sichuan 621023,China)  
In order to determine the cultivation measures on the quality of two-line hybrid wheat variety-Mianzamai 168,the effects of three nitrogen application rates and two plant densities and their interactions on the main quality characters of Mianzamai 168 were studied.The results showed that,except that the effects of plant density and nitrogen application rate on the test weight,the effects of plant density on the soften degree,the interaction of plant density and nitrogen application rate on the development time were insignificant,the other quality characters were effected by plant density,nitrogen application rate and their interactions significantly.Except for water absorption and falling number,the quality characters under the low plant density of 6×104 basic seedlings per 667m2 were superior to those of normal plant density of 12×104 basic seedlings per 667m2.Whether under low or normal plant density,the quality improved with the increase of nitrogen application rate,most quality characters except the water absorption and wet gluten reached medium-gluten wheat standard if nitrogen application rate were 15 kg nitrogen amount per 667m2.The correlationship between different quality characters showed that,SD had extremely significant and negative correlation with other quality characters.Protein content,wet gluten,water absorption,development time and stability time exhibited extremely significant and positive correlation with each other.Considering the production cost,high yield and good quality,the suitable cultivation treatments of Mianzamai 168 were 6×104 basic seedlings per 667 m2 and 15 kg nitrogen amount per 667 m2 on the basis of other cultivation measures.
【Fund】: 国家“十一五”支撑计划项目(2006BAD01A02);; 四川省“十一”育种攻关项目(2006YZGG-3);; 四川省农业厅重点资助项目
【CateGory Index】: S512.1
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