施氮水平对小麦百农矮抗58子粒淀粉积累的影响  

Effects of Nitrogen Levels on Accumulation of Grain Starch of Bainong AK 58

作　　者：韩占江[1] 吴玉娥[1] 郜庆炉[1] 薛香[1] 肖同建[1] 杨秀霞[1] 

机构地区：[1]河南科技学院生命科技学院,河南新乡453003

出　　处：《湖北农业科学》2008年第5期518-520,共3页Hubei Agricultural Sciences

基　　金：河南省科技攻关项目(0524100006;0424060016);河南省自然科学基金项目(0511030900);河南科技学院重点科研项目(040126)

摘　　要：研究了施氮水平对子粒淀粉积累的影响。结果表明,直链淀粉积累速率在花后10～15 d达到最大值,支链淀粉和总淀粉积累速率则在花后20 d以后达到最大值;花后35 d直链淀粉含量以N120处理(施纯氮120 kg.hm-2)最低,N480处理(施纯氮480 kg·hm-2)次之,二者与N0(施纯氮0 kg·hm-2)处理的差异均达极显著水平。支链淀粉和总淀粉含量均以N480处理最高,分别为66.59%,84.46%与N0处理的差异达极显著水平。Effects of N application levels on starch accumulation was studied. The results indicated that the fastest accumulating rate for amylose appeared during 10-15 d after anthesis, the fastest accumulating rate for amylopectin and total starch appeared in 20 d after anthesis,the amylose content in grains reached the lowest in 35d after anthesis under treatment N120 （pure N applied 120 kg·hm^-2）. The amylopectin and total starch contents in grains of treatment N480 （pure N applied 480kg·hm^-2）reached the highest （66.59%,84.46%）,also was most significantly different level with treatment No （no N fertilizer applied）. The ideal amount of N fertilizer application to the wheat was treatment N480（pure N applied 480kg·hm^-2）.

关 键 词：施氮水平 百农矮抗58 淀粉积累 淀粉组分 

分 类 号：S794.1[农业科学—林木遗传育种] S512.1[农业科学—林学]