核农学报2018，Vol.32Issue(1)：131-140,10.DOI:10.11869/j.issn.100-8551.2018.01.0131
春大麦营养器官游离氨基酸含量变化特征及其与籽粒蛋白质含量相关分析
Variation Characteristics of Free Amino Acids in Nutrition Organs of Spring Barley and Its Path Analysis With Grain Protein Content
摘要
Abstract
In order to explore the relationship between the free amino acids content in barley nutrition organs and the content of grain protein,an experiment was carried out in eastern Inner Mongolia with different nitrogen application levels and sowing date by using four spring Barley cultivars (Mengpi 1,Mengpi 3,Ganpi 4 and Kenpi 7) as materials.The dynamic change and correlations between the amino acids content in leaf and stem and the protein content of grain were studied at grouting stage.The results showed that the contents of free amino acids in leaves and stems were initially increased and then decreased,and the grain protein contents were decreased first and then increased with filling process at different sowing date and nitrogen fertilizer treatment.During the same grouting period,the content of free amino acid in leaves and stems and grain protein content were increased with the sowing date delayed.The content of free amino acid in leaves and stems and grain protein content were firstly increased and then decreased with the increase of nitrogen application level.The results of stepwise regression analysis showed that the content of free amino acid in the leaves and stems at 35 days after anthesis was significantly influenced at the maturity stage,but the results of the path analysis showed that the content of free amino acid in leavcs at 7 days after anthesis and in stem at 21 days after anthesis was notably influenced at the maturity stage.The results can provide a theoretical basis for determining the reasonable agricultural measures for high quality and high yield in barley.关键词
春大麦/游离氨基酸含量/蛋白质含量/相关分析Key words
spring barley/free amino acid contont/protein content/related analysis引用本文复制引用
徐寿军,张凤英,刘志萍,郭萍,李琲琲,薛海楠,王磊,李国兴..春大麦营养器官游离氨基酸含量变化特征及其与籽粒蛋白质含量相关分析[J].核农学报,2018,32(1):131-140,10.基金项目
国家自然科学基金(31360307) （31360307）
