摘要
Soil phosphorus (P) deficiency is a major yield-limiting factor in rice production.Employing 526 rice landrace accessions from 5 rice-planting regions and 16 prefectures in Yunnan Province,this paper studied their P-deficiency tolerance characteristics by comparing the relative plant dry weight under acid red soil condition.The results showed that Northwest Yunnan cold highland japonica rice-planting region was most abundant in P-deficiency tolerance core collection of indica,and there was no significant difference in japonica among five ecological zones of rice landraces.Nujiang,Lijiang,Dehong,Wenshan,Xishuangbana and Yuxi were most abundant in P-deficiency tolerance core collection of indica,and Lijiang,Wenshan and Chuxiong were most abundant in P-deficiency tolerance core collection of japonica.Indica had a higher P-deficiency tolerance than japonica.The P-deficiency tolerance of rice was significantly related with its genetic diversity,rice breeding and acid red soils.
Soil phosphorus （P） deficiency is a major yield-limiting factor in rice production. Employing 526 rice landrace accessions from 5 rice-planting regions and 16 prefectures in Yunnan Province, this paper studied their P-deficiency tolerance characteristics by comparing the relative plant dry weight under acid red soil condition. The results showed that Northwest Yunnan cold highland japonica flee-planting region was most abundant in P-deficiency tolerance core collection of indica, and there was no significant difference in japonica among five ecological zones of rice landraces. Nujiang, Lijiang, Dehong, Wenshan, Xishuangbana and Yuxi were most abundant in P-deficiency tolerance core collection of indica, and Lijiang, Wenshan and Chuxiong were most abundant in P-deficiency tolerance core collection of japonica. Indica had a higher P-deficiency tolerance than japonica. The P-deficiency tolerance of rice was significantly related with its genetic diversity, rice breeding and acid red soils.
出处
《应用生态学报》
CAS
CSCD
北大核心
2005年第8期1569-1572,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金项目(30260060
30160043)
云南省自然科学基金资助项目(2002C0077M).
关键词
云南
地方稻
核心种质
耐低磷特性
磷效基因
Rice landrace core collection, Yunnan Province, Relative plant dry weight, Phosphorus deficiency
作者简介
申时全，男，1975年生，硕士，助理研究员．主要从事水稻核心种质和耐冷性研究，发表论文近40篇．Tel：0871-589415；E-mail：shensq75@163．com
通讯联系人．E-mail：zengyw@public．km．yn．cn
