Induced Mutant by Gamma Rays and Genetic Analysis for Mutant Characters in Flue-cured Tobacco Variety(Nicotiana tabacum L.) II. Genetic Analysis for Mutant Characters in Flue-cured Tobacco

황색종 연초 품종의 Gamma선에 의한 돌연변이 유기 및 변이형질의 유전분석 II. 변이형질의 유전분석

This experiment was conducted to examine characteristics of agronomic characters and estimate of gene effect for several mutant characters. The genetic populations were derived from cross between 83H-5 and Hicks. There were significant difference for plant height, stlk height, leaf shape and bacterial wilt disease index except leaf number, leaf length, and what is more, F3 variance is more than Bl and B2 generation from cross 83H-5 X Hicks. Gene actions for stalk height and bacterial wilt disease were estimated by 3-parameter, and by 6- parameter model for all characters except above two characters but stalk height and bacterial wilt disease index are not significant in the additive and dominance effects. Dominant$\times$dominant epitasis for plant height, dominant and dominant$\times$dominant epistasis for leaf length, additive and additive$\times$additive and dominant$\times$dominant epistasis for leaf width, and additive and additive$\times$dominant epistasis for days to flower were appeared significant in gene action.