Path-coefficient analysis of yield-characters in tobacco
1990
Cho, M.C. (Korea Ginseng and Tobacco Research Inst., Kyungpook (Korea R.). Taegu Experiment Station) | Chang, K.Y. (Gyeongsang National Univ., Chinju (Korea R.). Coll. of Agriculture)
The study was intended to clarify the direct and indirect effects of agronomic and chemical characters influencing upon yield in tobacco breeding. The eight parents and a set of 28 crosses of F1's and F2's were used as materials, and planted on two different cultivated systems, i.e., oriental's and burley systems, during 1986 to 1988 at Taegu Experiment Station. Four characters which were leaf width, days to flowering and number of leaves per plant influenced the highly direct effects upon the leaf yield, but five chemical components were expressed as low effects. In indirect effects, leaf length, days to flowering and total nitrogen had the high indirect effects influencing upon leaf yield via the other characters. Accordingly, the results were discussed with a conclusion that the selection should be based on the data from leaf length, days to flowering, leaf width and number of leaves per plant
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