小麦品种低磷胁迫下高效基因型品种的筛选

Selection of High Efficient Genotypes of Wheat Cultivars under Low Phosphorus Stress

为筛选小麦磷高效基因型,指导田间有效施肥,节约农业生产成本,对西南麦作区24个小麦基因型在2种磷素水平下进行了磷素高效基因型的筛选。结果表明,基因型间对磷素的吸收利用能力存在差异,典型的无磷高效型品种:川麦104、川麦42、内麦836、安97-12;低磷高效型品种:SW 1747、渝1734、川麦42、绵16 Z 36、17 P 2-5,其中川麦42、川麦104等在低磷胁迫下根系依然表现出较强的增生能力,对于高效利用磷素提供条件。此次筛选结果与田间表现比较一致,在一定程度上可用于小麦育种研究与指导农业生产。

In order to screen high phosphorus efficiency genotypes of wheat,direct effective fertilization in field and save the cost of agricultural production,24 wheat genotypes in southwest wheat growing area were screened under 2 phosphorus levels.The results showed that there were differences in phosphorus uptake and utilization among genotypes.The typical phosphorus-free high efficient varieties were Chuanmai 104,Chuanmai 42,Neimai 836,an 97-12,and the low phosphorus efficient varieties were SW 1747,yu 1734,Chuanmai 42,mian 16 z 36,17 P 2-5,among them,river wheat 42 and Chuanmai 104 showed strong ability of root proliferation under low phosphorus stress,which provided conditions for high phosphorus utilization.The result of screening was consistent with the field performance,which could be used in wheat breeding research and agricultural production.