小麦高效利用磷素基因型的筛选及其指标的初步研究

Screening of Wheat Genotype for High-Efficiency Utilization of Phosphorus and the Preliminary Study on the Screening Parameter

以耐缺磷系数为指标研究了黑龙江省 32个春小麦品种 (系 )对磷素的敏感性。研究指出 ,成熟期株高、穗长、小穗数和穗粒数的耐缺磷系数都可以做为高效利用磷素基因型的筛选指标 ;并初步筛选出了

Spring wheat varieties or breeding lines grown in Heilongjiang province were employed to study their sensitivity to phosphorus with the index of phosphorus-shortage tolerance(IPST). The results indicate that the IPST of plant height,spike length,spikelet number and grain number per spike at mature stage could be used as parameters of screening wheat genotypes for high-efficiency utilization of phosphorus. As a preliminary result,5 wheat genotypes for high-efficiency utilization of phosphorus were singled out.