黄土高原北部春谷主要农艺性状遗传变异与选择

为了获得对春谷产量性状有效选择的依据。减少性状选择的盲目性，提高育种效率，对10个高产春谷品种（系）5点区域试验资料地上部分农艺性状进行了分析。结果表明：春谷茎高，抽穗日数，穗码数，穗长为高遗传力性状；千粒重，小穗产量，株粒重，穗粗遗传力中等；茎粗，出谷率，抽穗至成熟日数为低遗传力性状，通过相关性分析，提高春谷收获前的高产株型为；茎高133-147cm，茎基部直径0.8-1.0cm，穗长21-27cm，穗码数94-109个，株粒重15-21g；出谷率73%-79%；千粒重2.9-3.2g；抽穗日数为63-68d。

The Genetic Variation and Selection on Main Agronomic Character of Spring Millet in North Oess Plateau

For obtaining the base be effectively selected to yield character of spring millet and reducing the blindness be selected to characted and raising breeding efficiency,in this paper the agronomical character of sptring milles were analysed,the analysis discovered that heritability of the stem height and number of days from seedling to heading and spikelet number and earhead long of spring millet is hight,that heritability of the 1000-grain weight and block grain yield and seed weight perplant and earhead diameter is middle,that heritability of stem diameter and grain percentage and grain percentage and number of days from heading tomaturity is lower.Height yield plant model before spring millet were harvested were advanced by the cor relation analysis;the stemheight is 133 to 147 cm;the diameter of the base of a stem is 0.8 to 1.0 cm;the earhead long is 21 to 27 cm;the spikelet number is 94 to 109 No.;the seed weight perplant is 15 to 21 g;the grain percentage is per centage of 73 to 79;the 1000-grain weight is 2.9 to 3.2 g;the number of days from seedling to heading is 63 to 68 days.