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至1983年底,共收集国外甘薯品种资源144份,经整理后归并成134份。其中引自美国、日本、菲律宾的品种占87%。通过对品种的蔓长、薯皮色、薯肉色三种主要形态特征和产量、干率、萌芽性、贮藏性四种主要经济特性的研究结果表明:品种的特征、特性与生态型存在密切关系,其直接利用价值与产地的纬度高低呈正相关,夏秋薯地区以日、美品种的引种效果较佳。同时对品种的抗黑斑病、根腐病和茎线虫病性进行了鉴定筛选。指出根腐病在世界范围内的潜在威胁。本文为高产、抗病、专用型新品种选育提供优异的种质资源。
By the end of 1983, a total of 144 foreign sweet potato varieties were collected and sorted into 134 after finishing. Which cited from the United States, Japan, the Philippines accounted for 87% of varieties. The results showed that the characteristics and characteristics of cultivars were closely related to the ecotypes through the study of three main morphological characteristics of the varieties, such as vine length, potato skin color and potato color, and the main economic characteristics of yield, dry rate, germination and storage , And its direct utilization value is positively correlated with the latitude of the place of origin. The introduction of summer and autumn varieties in the summer fall potato region is better. At the same time, the varieties of resistance to black spot, root rot and stem nematodes were identified and screened. Identify the potential root cause of root rot in the world. This article provides excellent germplasm resources for the breeding of new varieties with high yield, disease resistance and special purpose.