水稻分蘖与植株碳氮化合物含量和分蘖相关基因表达量关系分析

发布时间：2018-09-17 14:06

【摘要】：以分蘖特性不同的4个寒地粳稻品种和2个籼稻品种为供试材料,通过盆栽试验研究水稻分蘖发生与植株可溶性糖、全氮含量及分蘖相关基因转录表达量关系。结果表明,分蘖发生起始时间、速度及最高茎数等分蘖特性主要受遗传因素控制,穗数型品种分蘖早生快发;在分蘖过程中高分蘖品种植株可溶性糖含量和糖氮比均显著高于低分蘖品种,全氮含量与此相反;分蘖过程中高分蘖品种OsTB1、OsD3和OsD14基因转录表达量均显著低于低分蘖品种,OsMADS57基因转录表达量均显著高于低分蘖品种;分蘖发生数与分蘖不同时期植株全氮含量呈不显著负相关,与可溶性糖含量、糖氮比及OsMADS57基因转录表达量呈显著正相关,与OsTB1、OsD3、OsD14基因转录表达量呈显著负相关。
[Abstract]:Four cold region japonica and two indica rice varieties with different tillering characteristics were used to study the relationship between tillering and soluble sugar, total nitrogen content and transcriptional expression of tiller related genes by pot experiment. The results showed that the characteristics of tillers, such as the onset time, speed and maximum stem number of tillers, were mainly controlled by genetic factors. The content of soluble sugar and the ratio of sugar to nitrogen in high tillering variety were significantly higher than those in low tillering variety during tillering, but the total nitrogen content was opposite. The transcriptional expression of OsTB1,OsD3 and OsD14 genes in high tillering varieties was significantly lower than that in low tillering varieties, and the number of tillers was negatively correlated with the total nitrogen content in different tillering stages. There was a significant positive correlation with soluble sugar content, ratio of sugar to nitrogen, transcription and expression of OsMADS57 gene, and a significant negative correlation with transcription and expression of OsTB1,OsD3,OsD14 gene.
【作者单位】：东北农业大学农学院;
【基金】：科技部“十三五”科技支撑计划项目(2015BAD23B05-11) 国家重点研发计划项目(2016YFD0300604-4) 东北农业大学学科团队建设资助项目黑龙江省水稻现代农业产业技术协同创新体系项目
【分类号】：S511

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