GENETIC EFFECTS AND GENETIC EFFECT × YEAR INTERACTIONS AT THREE GENE LOCI IN SUBLINES OF A MAIZE INBRED LINE

1976 ◽  
Vol 18 (1) ◽  
pp. 23-33 ◽  
Author(s):  
W. A. Russell
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Gene Action ◽  
Genetic Effect ◽  
Marker Genes ◽  
Additive Effects ◽  
Genotypic Effect ◽  
Single Marker ◽  
Chromosome Segments ◽  
Genotypic Effects

"Isogenic" lines of maize (Zea mays L.) inbred B14, differing by single marker genes and chromosome segments linked to these genes, were used to study gene action in the inheritance of 10 plant, ear, and grain characters. The 27 genotypes representing all combinations of the homozygous and heterozygous genotypes at three loci, rp, wx, and ws, were evaluated for three years. Highly significant differences among genotypes were observed for eight characters; genotype × year interactions were highly significant for seven characters, which included the two characters that were not different for genotypes. Additive effects were most important, followed by additive × additive epistasis, and dominance was relatively unimportant. Also, additive effects × years were generally the most important of the interactions, but except for the two characters that did not have significant differences among genotypes, the genotypic effect × year interactions were of considerably lesser importance than the genotypic effects.

TYPES OF GENE ACTION AT THREE GENE LOCI IN SUBLINES OF A MAIZE INBRED LINE

1971 ◽  
Vol 13 (2) ◽  
pp. 322-334 ◽  
Author(s):  
W. A. Russell
Keyword(s):  
Zea Mays ◽  
Inbred Line ◽  
Zea Mays L ◽  
Gene Action ◽  
Maize Inbred Line ◽  
Marker Genes ◽  
Isogenic Lines ◽  
Single Marker ◽  
Chromosome Segments

"Isogenic" lines of maize (Zea mays L.) inbred Hy, derived by backcrossing and differing by single marker genes and chromosome segments linked to these gene loci were used to study gene action in the inheritance of nine quantitative plant and ear characters. The 27 genotypes representing all combinations of the homozygous and heterozygous genotypes at the three loci, wx, br2, and rf2, were used. Highly significant differences among genotypes were observed for all characters studied. Frequencies of significant comparisons (P < 0.05) for the types of gene action were: additive, 74%; dominance, 74%; additive × additive. 78%; dominant × dominant, 70%; additive × dominant, 39%; additive × additive × additive, 67%; additive × additive × dominant, 30%; additive × dominant × dominant, 48%; dominant × dominant × dominant, 67%. Greatest effects were observed at the br2 segment; effects were greater at the rf1 segment than at the wx segment. Overdominance was significant for four characters at the wx segment, one character at the br2 segment, and three characters at the rf1 segment.

Gene Action in Oh45 and Oh45B Crosses of Zea mays L. 1

Crop Science ◽  
1972 ◽  
Vol 12 (3) ◽  
pp. 287-290
Author(s):  
W. R. Findley ◽  
E. J. Dollinger ◽  
S. A. Eberhart
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Gene Action

scholarly journals Evaluation of inbred lines of maize (Zea mays L.) through line × tester method

2015 ◽  
Vol 39 (4) ◽  
pp. 675-683
Author(s):  
MN Amin ◽  
M Amiruzzaman ◽  
A Ahmed ◽  
MR Ali
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Combining Ability ◽  
Zea Mays L ◽  
Gene Action ◽  
Inbred Lines ◽  
General Combining Ability ◽  
Genotypic Differences ◽  
Mean Values ◽  
Wide Range

Maize inbred lines were evaluated by using line × tester method involving 11 lines and 3 testers for grain yield and its components through estimation of general combining ability (gca) and specific combining ability (sca) effects. Highly significant genotypic differences were observed indicated wide range of variability present among the genotypes. The crosses with high sca effect for grain yield were evolved from high × low general combiner parents which reveled additive × dominance type of gene action. The cross combinations 9MS4-1 × L22, 9MS4-1 × L486, 9MS4-2 × L431, 9MS4-11 × L486 and 9MS4- 15 × L431 with high positive sca effect having high mean values might be used for obtaining high yielding hybrids. The information on the nature of gene action with respective variety and characters might be used depending on the breeding objectives. DOI: http://dx.doi.org/10.3329/bjar.v39i4.22547 Bangladesh J. Agril. Res. 39(4): 675-683, December 2014

scholarly journals Genetic analysis of oleic acid сontent in the oil of maize on the basis of mutation Sugary-1

2018 ◽  
Vol 23 ◽  
pp. 137-142 ◽  
Author(s):  
D. S. Tymchuk ◽  
G. S. Potapenko ◽  
N. F. Tymchuk ◽  
V. V. Myzhylko
Keyword(s):  
Zea Mays ◽  
Oleic Acid ◽  
Genetic Analysis ◽  
Zea Mays L ◽  
Additive Effects ◽  
Incomplete Dominance ◽  
Spatial Coupling

Aim. Genetic analysis of oleate content in the carriers of maize  mutation su1. Methods. Experiments were conducted on a series of inbreds – carriers of mutation su1, as well as hybrids derived from their diallel and top cross crossings. Results. Inbreds – carriers of mutation su1 were notable as having the increased content of oleate, which was inherited by the type of incomplete dominance with the prevailing contribution of additive effects to the variance. Conclusions. Increasing the content of the oleic acid glycerides in the carriers of mutation su1 caused by the spatial coupling of the locus su1 with the oleate – encoding locus, the effect of which can be modified by the polygenic complex. Keywords: Zea mays L., mutation su1, oleic acid, genetic analysis.

scholarly journals Genetic analysis of oleic acid content in the oils of maize sugary-2 mutants

2019 ◽  
Vol 24 ◽  
pp. 172-176 ◽  
Author(s):  
D. S. Tymchuk ◽  
G. S. Potapenko ◽  
N. F. Tymchuk ◽  
V. V. Muzhylko
Keyword(s):  
Zea Mays ◽  
Fatty Acid Composition ◽  
Oleic Acid ◽  
Fatty Acid ◽  
Genetic Analysis ◽  
Zea Mays L ◽  
Oleic Acid Content ◽  
Additive Effects ◽  
Maize Chromosome ◽  
Quantitative Nature

Aim. Genetic analysis of oleate content in the carriers of maize mutation su2. Methods. Experiments were performed on a series of unrelated inbreeds – carriers of mutation su2 which were hybridized by the diallel and top – cross crossings. The analysis of the fatty acid composition of oil were carried out using a modified gas-chromatographic Peyskare method. Results. It was found, that su2 mutants were notable as having the increased content of oleate compared to the maize of usual type and this trait has a quantitative nature. The inbreeds – carriers of su2 mutation were significantly differed in the the effects of combining abilities for the oleate content. The inheritance of oleate was carried out by the type of incomplete dominance with the prevailing contribution of additive effects to the variance. Conclusions. In the sixth maize chromosome it is very likely that there is a spatial linkage of the su2 and oleate- encoding locus, the effect of which can be modified by the polygenic complex. Keywords: Zea mays L., mutation su2, oleic acid, genetic analysis.

scholarly journals Combining Ability and Gene Action Using 10 X 10 Diallel Crosses of Ten Maize Inbred Lines (Zea mays L.)

2021 ◽  
Vol 12 (11) ◽  
pp. 1205-1211
Author(s):  
M. E. M. Abd El-Azeem ◽  
RIZK ALY ◽  
W. M. El Sayed ◽  
Noura Hassan
Keyword(s):  
Zea Mays ◽  
Combining Ability ◽  
Zea Mays L ◽  
Gene Action ◽  
Inbred Lines ◽  
Diallel Crosses ◽  
Maize Inbred Lines
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