이면교배에 의한 황색종담배 (Nicotiana Tabacum L.)의 양적 형질에 대한 유전분석 - II. $F_1$ 및 $F_2$ 세대의 heterosis와 반수체의 특성 -

Diallel Analysis of Quantitative Characters of Flue-cured Tobacco Varieties (Nicotiana tabacum L. ) II. Heterosis of the $F_1$ and $F_2$ generation and the characters of haploids from $F_1$ hybrids and their parents

Six flue- cured cultivars of Nicotiana tabacum L., 15 possible $F_1$ hybrids and $F_2$ Populations among them, and 15 haploid Populations from Fl hybrids and haploids from Parents, were evaluated. Comparisons of the $F_1$, hybrids and $F_2$ Populations with the Parents indicated that heterosis values were small but significant for yield, plant height, days to flower, leaf length and width and total alkaloids from-6.0% to 5.4% in $F_1$ hybrids, and from -3.4% to 3.6% for Plant height days to flower leaves per plant in $F_2$ populations, respectively. There were positive correlations for yield, plant height, days to flower, leaves per plant and total alkaloids between diploid and haploid populations. Increase or decrease ratio of haploids to diploids of total alkaloids was appeared to 30.3%. Those for yield, leaf length and width, value arid reducing sugar were ranged from -4.1% to -27.6%.