Combining Ability and Genetic Action Studies for Yield and Its Related Traits in Maize (Zea mays L.)

Rajesh, V.; Kumar, Satish; Reddy, V. Narsimha; Sankar, A. Siva

doi:10.20546/ijcmas.2018.706.313

Cited by 12 publications

(9 citation statements)

References 4 publications

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“…Inbred BGUDI 118 (1.75) exhibited highly significant gca effects in positive direction for kernel rows -1 followed by BGUDI 120 (1.70), MAI 349 (1.06), BGUDI 88 (0.97) and MAI 387 (-2.24). These findings are in line with the result reported by Pavan et al (2011) for ear length, ear circumference, kernel rows -1 and kernel rows ear -1 , Rajesh et al (2018) for test weight and Brahmbhatt et al (2018) for ear length, ear girth, grains rows ear -1 and grains row -1 . These results indicates that theses parents contribute to the increased ear length, ear circumference, kernel rows ear -1 and kernel rows -1 .…”

Section: General Combining Ability Effects Of Parentssupporting

confidence: 93%

Combining ability estimates and gene action studies from full diallel mating design in maize (Zea mays L.)

ARUNKUMAR¹

2022

APSR

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A study was under taken during kharif season of 2016 at College of Agriculture, Bheemarayanagudi and UAS, GKVK, Bengaluru to estimate the combining ability and investigate gene action involved in inheritance of yield and its components traits of maize inbreds through 20×20 full diallel cross analysis. 380 SCHs synthesized through full diallel mating design were evaluated in simple lattice square lattice design at two locations. Analysis of variance revealed significant differences among the hybrids, parents vs. hybrids and straight crosses for all the characters and among the parents for all the characters except ASI, ear circumference and shelling %. Significant differences were also recorded in reciprocal crosses for all the characters except ear circumference and shelling %. Significant GCA variance for grain yield revealed the role of additive components of genetic variance. SCA variance was also highly significant for all characters except ear circumference and test weight indicating the importance of both additive and non additive components of genetic variance. However, there was predominance of additive gene action recorded for all the characters. GCA: SCA variance ratio was less than unity for all the traits, suggesting the predominance of non-additive gene action. Inbreds MAI 283 and VL 109252 were identified as good general combiners as they registered significant gca effects in positive direction for grain yield and its component traits. Straight cross MAI-283×KDMI-16 and reciprocal cross M 04×KDMI 16 registered highest significant sca effects in positive direction for grain yield along with high and significant sca effects in negative direction for ASI.

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Section: General Combining Ability Effects Of Parentssupporting

confidence: 93%

Combining ability estimates and gene action studies from full diallel mating design in maize (Zea mays L.)

ARUNKUMAR¹

2022

APSR

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“…High heritability combined with high genetic advance was observed for grain yield indicates the dominance of additive gene action in governing the trait. Rajesh et al (2018) observed that the general combining ability and specific combining ability were significant for all the traits, which indicates the importance of both additive and non-additive genetic components. However, it is found that there was predominance of non-additive gene action was recorded for all the traits.…”

Section: Introductionmentioning

confidence: 88%

Genetic Architecture of Grain Yield and Some of Its Components Traits in Maize (Zea mays L.)

Al-Falahy¹,

Al-Zubaidy²

2022

TJAS

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Six inbred lines of maize (ZP-595, DKC-6418, DK-17, ZP-694, Sgporo from panan and UN 4652) were included in a half diallel cross. The inbred lines and their 15 crosses were planted in the fields of the College of Agricultural Engineering Sciences, Duhok University on July 5, 2018, using randomized complete block design with three replications. The components of phenotypic variance and narrow sense heritability were estimated, and the regression line analysis method was adopted for the traits: number of days to silking, number of days to tasseling, plant height, upper ear height, leaf area, number of rows. ear-1, number of grains. row-1, grain yield. Plant-1, weight of 300 grains, and shelling percent. The results showed that the mean square of the genotypes (parents and hybrids) was highly significant for all traits. The regression coefficient of Wr on Vr appeared significant for all traits except leaf area, indicating the presence of epistasis in its inheritance. It is also evident that the variances, additive (D) and dominant components (H1 and H2) were significant from zero for all traits, indicating the importance of additive and non-additive gene action in the inheritance of these traits. It was shown from Wr, Vr regression line analysis that the regression line cutting the Wr axis above the origin point for number of days to silking, number of days to tasseling, plant height, upper ear height, leaf area, number of rows. ear-1 and shelling percent, an indication of the additive effect of genes with a decrease in dominance, while the regression line crossed the Wr axis under the origin point, for number of grains. Ear-1, grain yield. Plant-1 and shelling percent indicating the presence of over dominance with proportions of dominant and recessive genes in parents. The narrow sense heritability was low for number of rows. ear-1, number of grains. Ear-1, grain yield. Plant-1, 300 grains weight and shelling percent, moderate for upper ear height and leaf area and high for number of days to silking, number of days to tasseling and plant height.

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“…Several combining ability studies have been conducted under drought-stressed conditions [8][9][10]. In these studies, others have found additive gene action to be important with regards to grain yield [11] and its components [9], while others found non-additive gene action to be preponderant [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Combining Ability of Quality Protein Maize Inbred Lines for Yield and Morpho-Agronomic Traits under Optimum as Well as Combined Drought and Heat-Stressed Conditions

Chiuta

Mutengwa

2020

Agronomy

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Drought and heat stress have perceptibly become major maize (Zea mays L.) yield reducing factors in Sub-Saharan Africa. As such, the objectives of this study were to: (i) determine the type of gene action conditioning tolerance to combined drought and heat stress (CDHS), and (ii) identify inbred lines with good combining ability for yield and other morpho-agronomic traits under CDHS. Twenty-four single cross hybrids (SCHs) obtained from crossing 10 inbred lines in a 4 × 6 North Carolina Design II, and a drought-tolerant check, were evaluated under CDHS and optimum conditions in the field. The experiment was laid out in a 5 × 5 alpha lattice incomplete block design, replicated three times. Additive gene effects influenced all the traits under CDHS except grain yield, which was influenced by non-additive gene effects. A preponderance of additive genetic effects was observed for all traits recorded under optimum conditions. Inbred lines L30, L6, L5, L17 and L2 showed good combining ability for yield under CDHS, indicating that they could be good parental lines in hybridization programs. Based on the results, SCHs L2*30, L6*13 and L5*18 exhibited high specific combining ability (SCA) effects for yield under CDHS. These hybrids are recommended for further multi-locational evaluation to determine the stability of their performance.

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Combining Ability and Genetic Action Studies for Yield and Its Related Traits in Maize (Zea mays L.)

Cited by 12 publications

References 4 publications

Combining ability estimates and gene action studies from full diallel mating design in maize (Zea mays L.)

Combining ability estimates and gene action studies from full diallel mating design in maize (Zea mays L.)

Genetic Architecture of Grain Yield and Some of Its Components Traits in Maize (Zea mays L.)

Combining Ability of Quality Protein Maize Inbred Lines for Yield and Morpho-Agronomic Traits under Optimum as Well as Combined Drought and Heat-Stressed Conditions

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