| 云南地方稻核心种质耐低磷特性研究 |
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| 引用本文： | 申时全,曾亚文,普晓英,杜娟,李绅崇.云南地方稻核心种质耐低磷特性研究[J].应用生态学报,2005,16(8):1569-1572. |
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| 作者姓名： | 申时全 曾亚文 普晓英 杜娟 李绅崇 |
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| 作者单位： | 云南省农业科学院生物技术与种质资源研究所,昆明,650205 |
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| 基金项目： | 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). |
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| 摘 要： | 1引言磷是作物的必需性营养元素,人类将面临农业可持续发展与磷素资源严重短缺的矛盾17].土壤普查结果表明,全国有59%以上的土壤缺磷1].为了提高作物产量,生产中通过施用磷肥来解决土壤缺磷的问题.由于磷肥利用率低,不仅增加生产成本,还带来资源短缺、环境污染及食品安全等诸多问题21,26].发掘水稻利用磷的内在潜力,培育磷高效利用新品种,可减少磷的施用量.近年来,野生或地方稻绿色基因发掘及改良进展显著,如资源高效利用22~24]、高产基因3,20,27]和抗性基因2,13]等,利用植物基因型间磷元素利用效率的差异,筛选和培育磷高效基因型作物…
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| 关 键 词： | 云南 地方稻 核心种质 耐低磷特性 磷效基因 |
| 文章编号： | 1001-9332(2005)08-1569-04 |
| 收稿时间： | 2004-09-10 |
| 修稿时间： | 2004年9月10日 |
Characteristics of Yunnan Province rice landrace core collections under phosphorus deficiency |
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| SHEN Shiquan,ZENG Yawen,PU Xiaoying,DU Juan,LI Shenchong.Characteristics of Yunnan Province rice landrace core collections under phosphorus deficiency[J].Chinese Journal of Applied Ecology,2005,16(8):1569-1572. |
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| Authors: | SHEN Shiquan ZENG Yawen PU Xiaoying DU Juan LI Shenchong |
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| Affiliation: | Biotechnology and Genetic Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China. shensq75@163.com |
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| Abstract: | 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. |
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| Keywords: | Rice landrace core collection Yunnan Province Relative plant dry weight Phosphorus deficiency |
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