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本文分析了亚洲栽培稻七个生态型66个品种的糊化温度。结果表明:品种内籽粒间的糊化温度变化较小,无明显差异;不同品种显示了明显的级別差异。变异范围为1到7级,各生态型内糊化温度级別平均值已有不同程度的分化:平均值最高的是Bulu和Upland,分別为4.27和4.26级,平均值最低的是Aman和Tjere,分别为2.05和1.91级,而Gundil,Aus,Boro平均值相近。此外,以平均相似性指数衡量了各生态型间的分化程度;在Bulu和Upland二个平均值极为相近的生态型间,平均相似性指数却有较大的差异,分别为0.85和0.61。为了分析生态型间的亲缘关系,以糊化温度级别平均值与其相似性指数平均值作图,结果表明,七个生态型以Upland为一组,Bulu为一组,其它5个生态型共为一组,可分为三群。
This paper analyzed the gelatinization temperature of 66 cultivars of seven cultivars in Asia. The results showed that there was no significant difference in gelatinization temperature among the varieties, and different varieties showed obvious difference in grade. The variation ranges from 1 to 7, and the average of the gelatinization temperature levels within each ecotype has been differentiated to different extents: the highest average is Bulu and Upland, which are 4.27 and 4.26 respectively, and the lowest average is Aman and Tjere , Respectively 2.05 and 1.91, while Gundil, Aus and Boro were similar. In addition, the average similarity index was used to measure the degree of differentiation between different ecotypes. The average similarity index between Bulu and Upland was similar between two ecotypes, which were 0.85 and 0.61 respectively. In order to analyze the genetic relationship between ecotypes, the average of gelatinization temperature was plotted with the average value of similarity index. The results showed that the seven ecotypes were Upland, Bulu was the same, and the other five ecotypes were A group, can be divided into three groups.