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.
出处
《麦类作物学报》
CAS
CSCD
北大核心
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)
关键词
磷肥
合成六倍体小麦
磷吸收效率
磷利用效率
Phosphorus~ Synthetic hexaploid wheat~ P uptake ef{iciency~ P utilization efficiency
作者简介
通讯作者：邓西平（E—mail：dengxp@ms．iswc．ac．cn）
