甜菜多倍体品种的重要农艺性状鉴定与评价

对生产上应用的15个多倍体甜菜品种的主要农艺性状进行了研究，方差分析表明它们在根产量、含糖率、产糖量3个性状的表现不同，根产量性状与对照差异不显著；含糖率性状与对照有1个品种达到显著水平，有4个品种达到极显著水平；产糖量性状与对照相比有1个品种达到显著水平，2个品种达到极显著水平。褐斑病性状差异不明显。甜研系列普通多倍体品种的经济性状表现总体上优于其它供试品种：遗传单粒型多倍体品种的各项经济性状指标相对较差。遗传相关性分析表明，除褐斑病级与根产量、含糖率及产糖量呈负相关外，其余3个性状间呈现正相关关系。

Identification of important agronomic traits of sugar beet polyploid varieties

Through identification of main traits of fifteen sugar beet polyploid varieties; we found that root yield, sugar content and sugar yield showed greatly dominant variance. However, the leaf spot resistance had no significant difference. The test of significance indicated that one variety in sugar content reached 5 percent striking level contrasting CK variety, and 4 varieties reached 1 percent striking level. And also one variety in sugar yield reached 5 percent striking level contrasting CK variety, and 2 varieties reached 1 percent striking level. The traits of general polyploid varieties of Tianyan were much better than others. The genetic correlation indicated that root yield, sugar content and sugar yield showed positive relations except Cercc~pom leaf spot resistance.