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磷是植物生长发育所必需的大量营养元素。植物磷营养高效利用通常与根的形态、根分泌物、膜与体内磷转运以及菌根等因素有关,表现为受多基因控制。本文通过前期筛选工作,获得1份耐低磷株系。利用230对SSR和InDel引物,对低磷材料所在的回交导入系群体进行了初步定位,定位结果显示,与磷利用效率相关的基因座位有两个OsPe5和OsPe7,分别位于第5染色体的InDel520与InDel529标记之间,与InDel525标记共分离,物理距离约为900kb,和第7染色体InDel703与InDel717标记之间,与InDel713标记共分离,物理距离约为1400kb。
Phosphorus is a large number of nutrients necessary for plant growth and development. The efficient use of plant phosphorus nutrition is usually related to the root morphology, root exudates, membrane and in vivo phosphorus transport and mycorrhiza and other factors, manifested as controlled by multiple genes. This article through the pre-screening work, access to a low-phosphorus-tolerant lines. Two pairs of SSR and InDel primers were used to locate the population of backcross inbred lines with low phosphorus content. The results showed that there are two OsPe5 and OsPe7 loci related to phosphorus use efficiency, located on chromosome 5 of InDel520 And InDel529 marker, co-segregated with InDel525 marker, with a physical distance of about 900kb, co-segregated with InDel713 marker and a physical distance of about 1400kb between chromosome 7 InDel713 and InDel717.