Diallel Cross Analysis of Quantitative Characters in Tobacco

Povilaitis, Bronius

doi:10.1139/g66-041

Cited by 11 publications

(5 citation statements)

References 23 publications

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“…Lamina-A weight and percent lamina-A showed a strong effect of dominance, while additive genetic variance played a major role for the same characters when the upper leaf stalk position (fourth pulling) was considered. Similar differential genetic effects for leaf dimensions at different stalk positions were reported by Povilaitis ( 1967). The predominance of a, in controlling physical variables was demonstrated earlier (Povilaitis 1966), where filling value was reported to have very low heritability.…”

Section: Discussionsupporting

confidence: 74%

“…Similar differential genetic effects for leaf dimensions at different stalk positions were reported by Povilaitis ( 1967). The predominance of a, in controlling physical variables was demonstrated earlier (Povilaitis 1966), where filling value was reported to have very low heritability. In our studies filling value did not demonstrate any genetic variability (Tables 3 and 4).…”

Section: Discussionsupporting

confidence: 74%

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Quantitative genetic studies in flue-cured tobacco (Nicotiana tabacum L.). II. Certain physical and chemical characters

Pandeya¹,

Dirks²,

Poushinsky³

et al. 1985

Can. J. Genet. Cytol.

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PANDEYA, R. S., V. A. DIRKS, G. POUSHINSKY, and B. F. ZILKEY. 1985. Quantitative genetic studies in flue-cured tobacco (Nicorionn tnbnc.um L.). 11. Certain physical and chemical characters. Can. J. Genet. Cytol. 27: 92-100. Genetic analyses of flue-cured tobacco leaf physical characteristics (percent lamina, lamina weight, and filling value) and chemical characteristics (percent total alkaloids, reducing sugars, nitrogen, ash, and cellulose) were conducted on a five parent diallel set (excluding reciprocals) evaluated at the Delhi Research Station in a randomized block design over a 2-year period. The ANOVA indicated that there was variance associated with the genetic source for all characteristics except filling value. Griffing's analysis for variances owing to general and specific combining abilities suggested additive genetic variance as the main source of genetic variation. Variances owing to specific combining ability for all traits were exceeded by the variance of the estimates indicating dominance to be of no major consequence in the expression of these physical and chemical traits. Total alkaloids and percent nitrogen expressed maximum heritability, and W,-V, graphs supported the conclusions. Parental diversity was evident from the scatter of array points and graphic analysis also indicated lack of dominance. Examination of pleiotropic effects revealed that traits related positively with alkaloids and nitrogen were negatively correlated with carbohydrate fractions such as reducing sugars and cellulose. Key w0rd.s: tobacco, heritability, dominance, additive effects. PANDEYA, R. S., V. A. DIRKS, G. POUSHINSKY et B. F. ZILKEY. 1985. Quantitative genetic studies in flue-cured tobacco (Nicotianc~ tnbncum L.). 11. Certain physical and chemical characters. Can. J. Genet. Cytol. 27: 92-100.Des analyses genetiques portant sur des feuilles de tabac traitees a I'air chaud ont ete poursuivies chez un groupe de cinq parents dialleles (excluant les reciproques) evalues par blocs casualises sur une pkriode de 2 ans, a la Station de Recherche de Delhi. Les caracteristiques considerees furent, sur le plan physique, les pourcentages de limbes, du poids des limbes et de la valeur de remplissage et, sur le plan chimique, les pourcentages en alcaloi'des totaux, en sucres reducteurs, en azote et en cellulose. L'ANOVA (I'analyse de variance) a indique que de la variance etait associee a la source genktique pour la plupart des caracteres, sauf pour la valeur de remplissage. L'analyse de Griffing, pour les variances dues aux aptitudes de combinaisons generales et. specifiques, suggere une variance genetique additive comme principale source de variation genktique. Les variances dues a I'aptitude aux combinaisons specifiques pour tous les caracteres ont ete surpassCes par la variance des estimes, ce qui indique que la dominance n'a aucune consequence majeure sur I'expression de ces caracteres physiques et chimiques. Les alcaloi'des totaux et le pourcentage d'azote ont exprime le maximum d'heritabilite et les graphiques W,-V, ont ap...

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Section: Discussionsupporting

confidence: 74%

Section: Discussionsupporting

confidence: 74%

Quantitative genetic studies in flue-cured tobacco (Nicotiana tabacum L.). II. Certain physical and chemical characters

Pandeya¹,

Dirks²,

Poushinsky³

et al. 1985

Can. J. Genet. Cytol.

View full text Add to dashboard Cite

show abstract

“…T h e operative gene effects (Table 111) are not satisfactory to elucidate the mode of inheritance. It has been reported in the literature (Matzinger et al, 1962;Povilaitis, 1966; and others) that the additive gene effects are the most important in inheritance of many characters in tobacco, that dominance effects are of little importance, and that the epistatic effects are not important. In the present study the additive gene effects were significantly different from zero only in crosses where T.I.…”

Section: Results and Discussiollmentioning

confidence: 99%

Gene Effects for Tolerance to Weather Fleck in Tobacco

Povilaitis¹

1967

Can. J. Genet. Cytol.

Self Cite

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“…Many authors made investigations into the inheritance of characters in various cultures, including tobacco. Povilaitis (1966) reported low heritability in a diallel set of eight flue-cured varieties for leaf number and yield per stalk, while for leaf area the highest heritability was recorded in top leaves. Espino and Capote (1976), in diallel of seven dark tobacco varieties, reported medium heritability for stalk height and leaf number and low heritability for yield per stalk.…”

Section: Introductionmentioning

confidence: 92%

Degree of inheritance and heritability of yield in parental genotypes and F1 hybrids of tobacco

Aleksoski

Korubin-Aleksoska²

2011

J AGR SCI BELGRADE

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The mode and level of inheritance of green and dry mass yield per stalk were investigated in four parental genotypes (Burley - B 2/93, Suchum - S1, Suchum - S2 and Prilep - P-84) and in their six diallel F1 hybrids. The trial was set up in 2007, 2008 and 2009 in the field of Tobacco Institute-Prilep in a randomized block design with four replications. The aim of the investigation was to estimate the heritability as an indicator of the inheritance of the yield as one of the most important quantitative characters of tobacco, in order to give suggestions for the selection of parental genotypes and directions for the creation of new varieties. The mode of inheritance was estimated according to the test - significance of the mean value of F1 progeny compared to the parental average. Narrow-sense heritability was estimated after Allard (1960), while broad-sense heritability and genetic components were estimated after Mather and Jinks (1974). The mode of inheritance in the hybrids was different. Positive heterosis for green and dry mass yields per stalk was recorded in S1 x S2. Negative heterosis for green mass yields per stalk was recorded in S1 x P-84 and S2 x P-84, while for dry mass yield it was recorded in S1 x P-84. Inheritance of the characters during the three years of investigation was identical. The higher heritability index of both types was recorded for dry mass yield. As regards inheritance of the yield, the values of broad-sense heritability were higher than those of narrow-sense heritability

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Diallel Cross Analysis of Quantitative Characters in Tobacco

Cited by 11 publications

References 23 publications

Quantitative genetic studies in flue-cured tobacco (Nicotiana tabacum L.). II. Certain physical and chemical characters

Quantitative genetic studies in flue-cured tobacco (Nicotiana tabacum L.). II. Certain physical and chemical characters

Gene Effects for Tolerance to Weather Fleck in Tobacco

Degree of inheritance and heritability of yield in parental genotypes and F1 hybrids of tobacco

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