黑龙江农业科学Issue(1)：1-7,7.DOI:10.11942/j.issn1002-2767.2026.01.0001
低氮条件下小麦类过敏近等基因系产量与氮效率差异分析
Differences in Yield and Nitrogen Efficiency Among Near-Isogenic Lines of Wheat Allergy Materials
摘要
Abstract
To explore the differences in yield and nitrogen efficiency among wheat near-isogenic lines(NILs)with similar genetic backgrounds under low-nitrogen conditions,six pairs of wheat NILs with consistent genetic backgrounds were used as experimental materials under nitrogen-free pot culture conditions.The research focused on differences in yield and its components,dry matter accumulation and distribution at maturity,nitrogen accumulation and distribution,and post-flowering nitrogen metabolism-related genes.The results showed that there were significant differences in single-plant yield and grain nitrogen use efficiency between the spotless and spotted genotypes of each NIL.The wheat NILs with similar genetic backgrounds were classified into two types:spotted nitrogen-efficient populations(NIL1,NIL3,NIL6)and spotless nitrogen-efficient populations(NIL2,NIL4,NIL5).Both types of nitrogen-efficient genotypes showed higher 1000-grain weight,above-ground dry matter mass,and plant nitrogen accumulation at maturity.Additionally,the expression levels of nitrogen utilization-related genes(TaNR,TaNiR,TaGS1)in the leaves of wheat NILs were significantly upregulated in the efficient genotypes of both types of nitrogen-efficient populations,indicating that these genes are closely related to the genotype differences in nitrogen efficiency of wheat.关键词
近等基因系/小麦/氮代谢/基因表达Key words
near isogenic lines(NILs)/wheat/nitrogen metabolism/gene expression引用本文复制引用
张新钵,刘奇谕,凤舞剑,张莹,高峰,张燕霞,强承魁..低氮条件下小麦类过敏近等基因系产量与氮效率差异分析[J].黑龙江农业科学,2026,(1):1-7,7.基金项目
徐州市科技计划资助(KC23064) （KC23064）
2025年江苏省职业院校教师企业实践项目 （）
徐州生物工程职业技术学院校级课题(XSZR202202). （XSZR202202）
