利用SNP标记进行水稻品种籼粳鉴定

郑向华, 叶俊华, 程朝平, 魏兴华, 叶新福, 杨窑龙

Xian-geng identification by SNP markers in Oryza sativa L.

ZHENG Xiang-Hua, YE Jun-Hua, CHENG Chao-Ping, WEI Xing-Hua, YE Xin-Fu, YANG Yao-Long

图2 最少SNP标记数目确定 A: 粳型指数与SNP数目的散点图; B: 粳型指数的标准差与SNP数目的曲线图; C: 利用统计分析确定最小标记数目。P值计算是通过对每5个SNP数目与相邻5个SNP数目粳型指数的标准差进行t检测而得出; 红色实线是指P = 0.05的阈值; 蓝色圆点是指-log10(P)的值; 红色方块是指每5个SNP数目-log10(P)的平均值。

Fig. 2 Determination of minimum number of SNPs A: scatter chart of geng index of different SNPs with 1000 repetitions; B: curve chart of standard deviation of geng index of different SNPs; C: statistical analysis for determining minimum SNPs. P-value was calculated from the t-test between the standard deviation of every five continuous SNP numbers and that of next five continuous SNP numbers. Red line indicates the threshold of P-value (P = 0.05), blue point indicates -log10(P) value, and red square indicates the average -log10(P) value of each five SNP numbers.