基于灰色关联分析不同气候生态类型区甜荞麦品种(系)的评价

Evaluation of Sweet Buckwheat Varieties(Lines)in Different Climate Ecological Types Based on Grey Relational Analysis

以自主选育和引进的5个甜荞麦品种(系)为材料,在宁南山区6县(区)不同气候类型区进行多年多点试验,对8个主要农艺性状进行了灰色关联度分析,综合评价了品种的优劣性。结果表明:参试品种主要农艺性状对产量的关联度表现为单株粒重>单株粒数>一级分枝数>密度>株高>主茎节数>千粒重;通过对等权关联度和加权关联度分析,结合生长期的抗病性、抗倒伏等抗逆性指标,筛选出适宜在当地种植的品种(系)为固荞麦1号和固荞3号,并建立了大面积生产示范区进行验证,其增产效果明显。

Using 5 sweet buckwheat varieties(lines)independently selected and introduced as materials.Years of multi-point experiments were conducted in 6 counties(districts)of different climate types in the southern mountainous areas of Ningxia,and grey correlation analysis was conducted on 8 main agronomic traits to comprehensively evaluate the advantages and disadvantages of the varieties.The results showed that the correlation degree between the main agronomic traits of the tested varieties and yield was as follows:grain weight per plant>number of grains per plant>number of primary branches>density>plant height>number of main stem nodes>thousand grain weight;Through the analysis of equal weight grey correlation degree and weighted grey correlation degree,combined with resistance indicators such as disease resistance and lodging resistance during the growth period,suitable varieties(lines)for local cultivation were selected as Guyuan Buckwheat 1 and Guyuan Buckwheat 3.Large scale production demonstration zones were established for verification,and their yield increase effect was significant.