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通过了解水稻子粒钙、镁、铜、铁、锌和硒等矿质元素含量,以绿旱1号作为父本与102S、KD36S、7HS012及7HS013不育系为母本进行配组,对父本与杂交后代主要农艺及经济性状、水稻子粒中的矿质元素含量进行了遗传分析,并对各杂交后代的主要农艺性状和子粒中矿质元素含量以及各矿质元素含量间进行了相关性分析。结果表明,杂交后代农艺及经济性状多数表现出超高亲分离现象,且LK3的农艺及经济性状均表现为最好。水稻子粒矿质元素含量与部分农艺和经济性状存在明显的正相关或负相关关系,且K、Mg、Zn、Se等元素含量与水稻产量密切相关。水稻子粒中矿质元素含量大小依次为P>K>Mg>S>Ca>Mn>Fe>Zn>Cu>Se,4个杂交后代的K元素含量表现出超高亲分离现象,LK2、LK3和LK4的Fe元素含量也表现出超高亲分离现象。水稻子粒大量与微量元素之间相关性最高,微量元素之间相关性次之,大量元素之间相关性最小,以7HS012不育系为母本得到的杂交后代农艺性状表现较好,矿质元素含量最高,7HS013次之,其他不育系表现一般。本研究为选育出耐旱及营养价值高的水稻新品种母本的选择提供了理论依据。
Through understanding the content of mineral elements such as calcium, magnesium, copper, iron, zinc and selenium in rice grain, the male sterile line 102S, KD36S, 7HS012 and 7HS013 was used as the female parent with Lulian 1 as the male parent, The main agronomic and economic traits of hybrids and the mineral elements in rice grains were analyzed. The main agronomic traits and the contents of mineral elements and the contents of mineral elements in the hybrids were analyzed. The results showed that most of the agronomic and economic characters of hybrid progenies showed the phenomenon of ultra-high pro-segregation, and agronomic and economic characters of LK3 were the best. There was a significant positive correlation or negative correlation between mineral elements content and some agronomic and economic characters in rice grain, and the contents of K, Mg, Zn, Se and other elements were closely related to rice yield. The content of mineral elements in rice grain followed the order of P> K> Mg> S> Ca> Mn> Fe> Zn> Cu> Se, The Fe element content also showed the phenomenon of ultra-high affinity separation. The correlation between trace elements and rice trace elements was the highest, the correlation between trace elements was second, and the correlation between trace elements was the least. The agronomic characters of hybrids derived from CMS line 7HS012 were better, and the content of mineral elements The highest, 7HS013 times, the other sterile lines in general. This study provides a theoretical basis for the selection of female parents of new rice varieties with high drought tolerance and nutritional value.