不同苦荞品种花和籽粒空间分布特征及差异分析

以8个苦荞品种为试验材料,研究不同苦荞品种花和籽粒在植株不同部位的分布特征及差异。结果表明,不同苦荞品种花和籽粒总数存在显著差异,其中川荞2号总花数、总籽粒数最高,分别为3 046.6和1 367.8,而川荞1号最少,分别为1 017.6和487.2,品种间总花数和总籽粒数变异系数分别为34.8%、29.0%。不同苦荞品种花和籽粒空间分布呈现相同趋势,均主要分布于分枝上,分别占整株的76.3%和74.2%以上,且均显著高于主茎,分别高68.7%~87.0%和65.2%~84.5%。生产上可通过调控分枝的有效籽粒数来提高苦荞产量。

Difference Analysis in Flowers and Seeds Number of Different Tartary Buckwheat Varieties and Their Spatial Distribution Characteristics

Eight tartary buckwheat cultivars were used as experimental materials to study the differences of flowers and grains in different parts of plants of different tartary buckwheat cultivars. The results showed that there were significant differences in the total number of flowers and seeds among different tartary buckwheat varieties. The total number of flowers and grains of Chuanqiao 2 was the highest, being 3 046.6 and 1 367.8, respectively, but Chuanqiao 1 was the lowest, being 1 017.6 and 487.2, respectively. The coefficients of variation of total flowers and total grains were 34.8% and 29.0% respectively. Analyzing the spatial distribution of flowers and grains showed that different tartary buckwheat varieties showed the same trend on their spatial distribution, and both flowers and grains distributing on branches were significantly higher than that on the main stem. Branched flowers and grains accounted for 76.3% and 74.2% of the whole plant, respectively, significantly higher than the main stem. The branched grains and flowers were 68.7%-87.0% and 65.2%-84.5% higher than the main stem, respectively. In production, the yield of tartary buckwheat can be increased by regulating the number of effective grains on branches.