作物学报2006，Vol.32Issue(8)：1166-1173,8.
云南地方稻矿质元素含量的变异类型与地理生态差异
Ecogeographic Difference and Variation Pattern of Mineral Contents for Yunnan Rice Landraces
摘要
Abstract
It was analyzed using ICP-AES spectrometer method that ecogeographic difference and variation pattern based on P, K, Ca, Mg, Fe, Zn, Cu and Mn contents in brown rice of 583 accessions landraces for core collection from the five regions and 16 prefectures/cities in Yunnan Province. Results showed that the mean and diversity index of 8 mineral contents of 583 accessions in brown rice followed an order as P＞K＞Mg＞Ca＞Fe＞Zn＞Cu＞Mn,P＞Mn＞Cu＞K＞Mg ＞Zn＞Fe＞Ca. Central Yunnan single season japonica-indica region was the distribution center of higher Ca(164.86 μg/g), Fe(38.33 μg/g) and Zn (39.03 μg/g) contents in brown rice, especially Dali and Chuxiong prefectures with the highest Ca(205.88, 223.33 μg/g), Fe (87.89, 121.45 μg/g) and Zn(44.13, 39.33 μg/g) contents. Simao prefecture was the lowest P and K and Mg contents zones in brown rice among prefectures, Honghe and Wenshan were the distribution center of K and Cu contents of brown rice in Yunnan. For one of the important discover in this article, the genetic diversity center based on 8 mineral contents in brown rice from Lincang, Simao, Xishuangbanna and Dehong prefectures has the similar trend with both the genetic and gene diversity center of rice landraces in Yunnan based on morphological traits and isozyme and SSR markers. The region with the highest genetic diversity index for grain-P contents in brown rice was located in rice genetic diversity center of Yunnan Province in China. Therefore, the diversity of mineral contents, especially for phosphorus, in brown rice is likely to associate with the genetic and gene diversity in rice.关键词
元素含量/变异类型/地理生态/云南地方种Key words
Element content/Variation pattern/Ecogeographic type/Yunnan landraces分类
农业科技引用本文复制引用
曾亚文,刘家富,汪禄祥,杜娟,普晓英,杨树明,张洪亮..云南地方稻矿质元素含量的变异类型与地理生态差异[J].作物学报,2006,32(8):1166-1173,8.基金项目
National Natural Science Foundation of China (30260060), Natural Science Foundation of Yunnan Province (2002C0077M), Yunnan Introduction and Foster Talent (2005PY01-14). （30260060）
