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以来自云南5个稻作区或16个地州的地方稻核心种质为材料,用等离子体原子发射光谱法(ICP-AES)测定了583份糙米P,K,Ca,Mg,Fe,Zn,Cu和Mn含量,并进行了8种矿质元素含量的变异类型及其地理生态差异研究。结果表明,583份糙米8种矿质元素含量为P>K>Mg>Ca>Fe>Zn>Cu>Mn,多样性指数为P>Mn>Cu>K>Mg>Zn>Fe>Ca。滇中一季籼粳稻区是高Ca(164.86μg/g),Fe(38.33μg/g)和Zn(39.03μg/g)糙米的分布中心,尤其是大理和楚雄州糙米的Ca(205.88,223.33μg/g),Fe(87.89,121.45μg/g)和Zn(44.13,39.33μg/g)含量在云南16个地州中最高。思茅地区是云南低磷、低钾和低镁糙米含量的分布中心;红河和文山州是云南高钾和高铜糙米的分布中心。临沧、思茅、西双版纳和德宏州是云南地方稻糙米基于8种矿质元素的遗传多样性中心,也是糙米磷含量的遗传多样性中心,这与基于云南地方稻种形态、同工酶和SSR标记确定的云南稻种遗传多样性中心有一定的相似趋势;这是本文中重要的发现之一。这些结果揭示了云南地方稻种糙米矿质元素(特别是磷)含量的多样性与稻种的遗传和基因多样性可能有某种相关。
In this study, 583 kernels of P, K, Ca, Mg, Fe, Zn were determined by ICP-AES from the core rice germplasm from five paddy fields in Yunnan and 16 prefectures. , Cu and Mn, and the variation types of eight mineral elements and their differences in geography and ecology were studied. The results showed that the mineral elements contents of 583 brown rice varieties were P> K> Mg> Ca> Fe> Zn> Cu> Mn, and the diversity indices were P> Mn> Cu> K> Mg> Zn> Fe> Ca. The first season Indica-Japonica rice in central Yunnan is the distribution center of brown rice with high contents of Ca (164.86μg / g), Fe (38.33μg / g) and Zn (39.03μg / g), especially the brown rice in Dali and Chuxiong prefectures (205.88,223.33μg / g), Fe (87.89,121.45μg / g) and Zn (44.13,39.33μg / g) content in Yunnan 16 states highest. The Simao region is the distribution center for the contents of low-P, low-K and low-magnesium brown rice in Yunnan. Honghe and Wenshan are the distribution centers of high potassium and high-copper brown rice in Yunnan. Lincang, Simao, Xishuangbanna and Dehong prefecture are the genetic diversity centers based on eight kinds of mineral elements in Yunnan local brown rice, which is also the genetic diversity center of phosphorus content in brown rice. This is in accordance with the morphological, isozyme and SSR There is a certain similar trend between the markers of Yunnan rice genetic diversity centers; this is one of the important findings in this article. These results revealed that the diversity of mineral elements (especially phosphorus) in brown rice may have some correlation with the genetic and genetic diversity of rice in Yunnan.