頁籤選單縮合
題 名 | 甘藷品種區域試驗技術之研究=Study on Variety Environment Interactions in Regional Sweet Potato Varietal Tests and Their Implications on Testing Procedures |
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作 者 | 李良; | 書刊名 | 中華農學會報 |
卷 期 | 45 民53.03 |
頁 次 | 頁11-17 |
關鍵詞 | 甘藷; 品種; 區域試驗; |
語 文 | 中文(Chinese) |
英文摘要 | Data obtained from 8 locations for a 3-year period involving 12 varieties in the fall season and 5 varieties in the spring season were used to obtained estimates of the relative magnitudes of the various types of variety × environment interactions for yield in regional sweet potato varietal tests, and to discuss their implications on variety-testing procedures. The results from the analyses of the data in both fall and spring seasons, the components of variance for variety × location and variety × year interactions were small and non-significant for the characters of tuber and vine yields. However, the interaction of variety ×location × year was highly significant. This second order interaction indicated that the varieties responded quite differently when grown under different environment, but it is not accounted for by the year or location grouping. Observations on the environmental conditions and varietal response for each individual tests suggested that the rainfall patterns; temperature, insect infectation and time of maturity were very likely responsible for creating the specific environments to which the relative performance of varieties responded differently. In this study, it is apparent that increasing the number of environments is much more effective in decreasing the theoretical error of a variety mean than is any increase in number of replications. This shows that increasing in number of locations and years would appears to be quite effective in increasing the precision of variety evaluation than would increasing number of replicates in the regional trials. By considering cost and time and the precision of variety evaluation, adequate testing scheme of the regional sweet potato varietal tests in both fall and spring seasons for Taiwan conditions seemed to be 3 years, 8 locations, and 3 replications. |
本系統中英文摘要資訊取自各篇刊載內容。