慈姑种质资源的品质性状分析

对保存于国家种质武汉水生蔬菜资源圃内的100份慈姑种质资源品质性状进行了测定，并对其进行了正态分布检验、相关性分析和聚类分析。结果表明：干物质含量平均为30.87%，变幅23.55%～38.82%|淀粉含量平均为16.36%，变幅11.44%～22.58%|粗蛋白含量平均为4.67%，变幅2.89%～6.98%|可溶性糖含量平均为2.67%，变幅1.55%～3.94%。干物质含量、可溶性糖含量和淀粉含量服从正态分布，粗蛋白含量不服从正态分布|高干物质含量和高淀粉含量的慈姑种质资源的总体水平相对较高。干物质含量与粗蛋白含量、可溶性糖含量、淀粉含量间呈极显著正相关，粗蛋白含量、可溶性糖含量和淀粉含量间呈极显著负相关。依品质性状将100份慈姑种质资源聚为5类，第1类为各品质性状含量均低类型|第2类为仅粗蛋白含量稍高类型|第3类为可溶性糖含量极高类型|第4类为粗蛋白含量极高类型|第5类为干物质含量和淀粉含量极高类型。

Quality Traits Analysis of Corm in Arrowhead Germplasm

In order to provide theoretical basis for germplasm development and quality breeding of arrowhead(Sagittaria sagittifolia L.),the quality traits of corm in 100 arrowhead germplasm,conserved in Wuhan National Germplasm Repository for Aquatic Vegetables,were tested.The normal distribution,pearson correlation and cluster were analyzed.The results indicated that the average dry matter content was 30.87%,ranging from 23.55%-38.82%.The average starch content was 16.36%,ranging from 11.44%-22.58%.The average crude protein content was 4.67%,ranging from 2.89%6.98%.The average soluble sugar content was 2.67%,ranging from 1.55%-3.94%.The distribution of dry matter content,soluble sugar content and starch content are normal,but the distribution of crude protein content is not normal.The accession number of high dry matter content and high starch content is higher than the others.The dry matter content is very significantly positive correlated with the crude protein content,and so is the soluble sugar content with the starch content.While the crude protein content is very significantly negative correlated with the soluble sugar content and starch content.The soluble sugar content is significantly negative correlated with the starch content.The 100 arrowhead germplasm resources are divided into 5 categories according to their quality traits.In the 1st group,all quality traits contents are lower.In the 2nd group,only the crude protein content is higher.In the 3rd group,the soluble sugar content is the highest.In the 4th group,the crude protein content is the highest.In the 5th group,the dry matter content and starch content are the highest.