硬粒小麦-粗山羊草人工合成小麦的磷效率研究  

Study on Phosphorus Efficiency of Synthetic Hexaploid Wheat Derived from Triticum durum-Aegilops tauschii

作　　者：柳鹏[1] 王仕稳[2] 殷俐娜[2] 辻本壽[3] 邓西平[1,2] 

机构地区：[1]西北农林科技大学林学院,陕西杨凌712100 [2]西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100 [3]鸟取大学干燥地研究中心,日本鸟取6808533

出　　处：《麦类作物学报》2014年第3期332-339,共8页Journal of Triticeae Crops

基　　金：中国科学院西部之光项目(K318021221);国家重点基础研究发展计划(973计划)项目(2009CB118604)

摘　　要：为了挖掘磷高效种质资源、培育磷高效小麦品种,利用盆栽方法,设两个磷处理,以磷高效小麦品种长武134和磷低效小麦品种中国春为对照,研究了47份人工合成六倍体小麦(AABBDD)苗期的磷效率、磷吸收效率、磷利用效率的差异及评价指标。结果表明,SPAD值和地上部磷浓度不能作为评价人工合成小麦磷效率的指标,而低磷条件下幼苗的地上部干物质积累量、磷吸收效率与磷效率呈显著正相关。根据磷效率和地上部干物质积累量筛选出3份磷高效的人工合成小麦(SW23、SW24、SW26)。由本研究结果可知,粗山羊草包含与磷高效有关的基因,其与硬粒小麦杂交人工合成的小麦可作为育种材料和普通小麦杂交,进而选育磷高效小麦品种。Phosphorus （P） deficiency is one of the major yield-limiting constraints in wheat produc- tion. The most effective way to solve the P deficiency is to breed high P efficiency wheat. In current study, 47 accessions of synthetic hexaploid wheat （SW, AABBDD） were used to investigate their P efficiency with high P efficiency wheat Changwu134 and low P efficiency wheat Chinese Spring as the check. The result indicated that the SPAD readings and shoot P concentrations were no correlation with P efficiency. By contrast, the shoot dry weight and P uptake efficiency had a better relationship with P efficiency. Three SW lines （SW23, SW24, SW26） had higher shoot dry weight and P efficien- cy. The conclusion is that the Aegilops tauschii （DD） have high P efficiency genes and they can be used for breeding high P efficiency wheat cultivars through hybridization.

关 键 词：磷肥 合成六倍体小麦 磷吸收效率 磷利用效率 

分 类 号：S512.9[农业科学—作物学] S330