6个不同类型山药品种引种鉴定及特色品种筛选

6个不同类型山药品种的引种鉴定及特色品种筛选结果表明:短块茎山药(紫山药、白山药)可以作为特色山药品种进行示范推广;较短块茎山药(无架双胞、麻山药)以及较长块茎的大和长芋(块茎长度为0.9～1.2 m)可作为优良品种加以利用,丰富山药品种结构。产量高低依次为水山药>大和长芋>麻山药>无架双胞>紫山药>白山药;水山药产量最高,为63.75 t/hm2。生育期最长的为紫山药和白山药;水山药和无架双胞出苗最快,紫山药和白山药出苗较慢。

Identification of New Yam Varieties and Selection of Characteristic Breeds

Six different types of new yam varieties were introduced and identified,and the characteristic breeds among them were screened.The results indicated that short-tuber yam(Purple yam and White yam) with length of 0.2～0.4 m could be demonstrated and extended as characteristic varieties.Shorter-tuber yam(Wujia yam and Ma yam) with length of 0.5～0.8 m and longer-tuber Japanese yam with length of 0.9～1.2 m could be used as good varieties.The tested six yam varieties could be arranged according to their yield as follows: Water yam>Japanese yam>Ma yam>Wujia yam>Purple yam>White yam.Water yam had the highest yield(63.75 t/hm2).Purple yam and White yam had the longest growth and developmental duration.The germination of Water yam and Wujia yam was the fastest,while slowest for Purple yam and White yam.