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利用已构建的“云粳17号/云粳20号”重组自交系(RILs)群体为试验材料,在低纬高原中国云南和高纬平原韩国水原两地间开展了粳稻主要农艺性状的异地穿梭鉴定,并分析了粳稻RILs群体主要农艺性状在不同生长环境下表型差异及其相关性。研究表明,千粒重在两地间表型差异不显著(t值为3.24),单株穗重和结实率表型差异相对较小(t值分别为8.00和8.31),而株高、穗数、每穗总粒数表型差异极显著(t值分别为13.17、15.11和13.56);主要农艺性状间相关性分析表明,两种生境下除结实率与单株穗重相关性不一致外,其它性状间的相关性表现趋势较一致;两地熟期也较一致。以上说明可以利用高原和平原两大生境,加强对品种适应性的选择,促进有利基因的鉴定,为两国开展优异性状的QTL定位和品种选育提供理论依据。
Using the constructed RILs population “Yunjing 17” / Yunjing 20 "as experimental materials, the main agronomic traits of japonica rice were conducted in the low latitude plateau of China and the Suwon Plain of South Korea in Yunnan and China. , And analyzed the phenotypic differences and their correlations of major agronomic traits in japonica RILs population under different growth environments. The results showed that there was no significant difference in the 1000-grain weight between the two regions (t = 3.24). The differences in the panicle weight and seed setting per plant were relatively small (t = 8.00 and 8.31, respectively) The phenotypic differences of total grain number per panicle were significant (t values were 13.17, 15.11 and 13.56, respectively). The correlation analysis of main agronomic traits showed that the correlation between seed setting rate and plant height per plant was not consistent The correlation between the performance of the trend is more consistent; the two cooked more consistent. The above description can make use of the two habitats of plateau and plains to enhance the selection of varieties adaptability and promote the identification of favorable genes and provide a theoretical basis for the QTL mapping and breed breeding of excellent traits in the two countries.