| Genetic diversity analysis on the agronomic characteristics of 50 tartary buckwheat germplasms |
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| DOI：10.7606/j.issn.1000-7601.2015.05.03 |
| Key Words: tartary buckwheat germplasm resources genetic diversity cluster analysis |
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| Abstract: |
| To provide theoretical basis for rational use of tartary buckwheat varieties and potential improvement of tartary buckwheat breeding, the genetic diversities of 50 tartary buckwheat germplasm resources were analyzed based on the observation in field at the testing ground of Agricultural Science Research Institute of Dingxi, and their genetic relationships were further concluded. The results showed that substantial genetic diversity was discovered among the 50 tartary buckwheat germplasm resources. Among the 4 quality traits (grain color, kernel shape, plant type, and lodging resistance) investigated, the genetic diversity index of grain color scored the highest. For the 6 quantitative traits (period of duration, plant height, node number of stem, branch of stem, 1000-grains weight, and seeds weight per plant), the genetic diversity index of seed weight per plant was the highest and its variation coefficient reached the maximum. According to the results of correlation analysis and the cluster analysis, the third group including 11 germplasms was the variety with characteristics including short period of duration, proper plant height, additional branches, loose plant type, lodging resistance, high 1000-grains weight and seeds weight per plant, which was the desirable breeding materials with high yield and lodging-resistant. |
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