不同玉米品种苗期对磷胁迫反应的研究  

Response of Maize Genotypes to Low Phosphorus Stress at the Seedling Stage in Southern China

作　　者：程艳波[1] 李秀平[1,2] 曹亚琴[1] 严朝挺 年海[1,3] 

机构地区：[1]华南农业大学农学院,广州510642 [2]广东农工商职业技术学院,广州510507 [3]华南农业大学/亚热带农业生物资源保护与利用国家重点实验室,广州510642

出　　处：《玉米科学》2015年第2期87-92,共6页Journal of Maize Sciences

基　　金：农业部"948"项目(991023)

摘　　要：以17个主要推广玉米品种、5个新组合和3份资源为材料,利用盆栽苗期试验比较它们在酸性低磷土壤的适应性。研究结果表明,供试玉米品种存在明显的耐低磷基因型差异,华玉106、华玉104、华玉107、桂单22、农大68和兴黄单936等耐低磷性较好,其中,华玉106和华玉104在地上部和根生物量、根长和根表面积都最高,可作为玉米耐低磷育种重要资源。Seventeen maize varieties, five hybrids and three landraces mainly from Southern China were testedunder low P acid soil at the seedling pot experiment. The result showed that the resistance to low P in these maizegenotypes was significantly different, of which 6 maize varieties with low P- tolerance were identified, includingHY106, HY104, HY107, GD22, ND68 and XHD936. Double-cross hybrids, HY106 and HY104, had higher shootbiomass, root biomass, root length and root surface area than other cultivars or hybrids. These tolerant resourcescould be used for low-P breeding.

关 键 词：玉米 低磷胁迫 磷高效玉米育种 

分 类 号：S513.01[农业科学—作物学]