低磷胁迫下武陵山区糯玉米地方品种的籽粒产量和营养品质效应

以10个来自武陵山区的糯玉米地方品种为材料,设置不施磷和施磷2个处理,研究其对糯玉米地方品种籽粒产量和营养品质的影响,结果表明,低磷胁迫对糯玉米地方品种籽粒产量、蛋白质和亚油酸含量影响较大。籽粒产量、蛋白质和亚油酸含量可作为筛选耐低磷糯玉米种质的指标。低磷胁迫下籽粒产量与营养品质的相关分析结果表明,育种上培育高产优质耐低磷的糯玉米品种是可行的。

Effects of Low-P Stress on Kernel Yield and Nutrient Quality of Waxy Corn Landraces in Wuling Mountain Area

The kernel yield and nutrient qualities of 10 waxy corn landraces from Wuling mountain area were investigated in both P-deficiency and P-sufficiency conditions.The results showed that P-deficiency had great negative influence on kernel yield,protein content and sub-oleic acid content,which could be taken as the screening standards for identifying the low-P tolerant germplasm in landraces.The correlation analysis indicated that the kernel production of waxy corn landraces had relationships with 4 quality traits under P-deficiency.It is possible that waxy corn varieties tolerant to low-P stress could be developed with high economic yield and nrtrient qualities.