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用ICP-AES方法测定了新平县相同生态条件下种植的653份云南稻资源糙米8种矿质元素含量,并按丁颖的栽培稻生态型对其遗传多样性进行了研究。结果表明,云南水稻改良品种糙米P、Fe和Zn含量比地方稻种分别下降10.53%1、4.76%和35.16%,但改良品种特别是粳稻Ca含量比地方种高,8种矿质元素以Ca的多样性指数最大;糙米P、Ca、Mg、Fe、Zu、Cu和Mn平均含量以粳稻的Mg、Fe和Zn,水稻的P、K和Mg,陆稻的Fe和Zn,糯稻的K和Fe,早稻的Mg和Fe相对较高。8种矿质元素平均遗传多样性指数依次为粳>籼,陆>水,粘>糯,早中稻>晚稻和地方种>改良种,且P>K>Mn>Mg>Cu>Zn>Fe>Ca;其变异系数依次为Fe>Ca>Cu>Zn>Mn>K>Mg>P。
The contents of 8 mineral elements in 653 brown rice cultivated under the same ecological conditions in Xinping were determined by ICP-AES. The genetic diversity of cultivated rice in Dingping was studied. The results showed that the contents of P, Fe and Zn in brown rice decreased by 10.53%, 1.76% and 35.16%, respectively. However, the content of Ca in improved varieties, especially in japonica rice, was higher than that in local ones. The contents of Ca, The average content of P, Ca, Mg, Fe, Zu, Cu and Mn in brown rice was the highest in rice with Mg, Fe and Zn in rice, P, K and Mg in rice, Fe and Zn in paddy rice, K and Fe in glutinous rice The early rice has higher Mg and Fe. The average genetic diversity index of the eight mineral elements in turn was japonica> indica> land> water> viscous> waxy rice> early middle rice> late rice and local species> improved varieties with P> K> Mn> Mg> Cu> Zn> Fe> Ca The coefficients of variation were Fe> Ca> Cu> Zn> Mn> K> Mg> P.