Estimation of Heterosis through Diallel Crosses in Maize (Zea mays L.) for Grain Yield and Protein Content

Brahmbhatt, B.N.; Kuchhadiya, GV; Gosai, MA; Joshi, Neelima; Kanjariya, KG

doi:10.20546/ijcmas.2018.704.391

Cited by 3 publications

(3 citation statements)

References 6 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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“…Since the GCA effects are endorsed by the preponderance of genes with additive effects and SCA indicates a predominance of genes with non-additive effects (Falconer, 1981), diallel crosses have been used for a long time in genetic research to determinate the inheritance of a trait among a set of genotypes and to identify superior parents for hybrid or cultivar development (Aliu et al, 2009). These methods have been extensively in different crops like maize (Njeri et al, 2017;Owusu et al, 2017;Brahmbhatt et al, 2018), rice (Huang et al, 2015;Kundan et al, 2013), Brassica (Tian et al, 2017) and cassava (Tumuhimbise et al, 2014). Therefore, it is necessary to understand the nature and magnitude of gene action as well as combining ability of yield and its attributes.…”

Section: Introductionmentioning

confidence: 99%

Inheritance and combing ability in maize using a 7x7 diallel cross

Begum¹,

Alam²,

Omy³

et al. 2018

J. Plant Breed. Crop Sci.

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Twenty one F1s produced from 77 diallel mating along with the 7 parents were evaluated to notice the inheritance and combining ability of different traits to obtain high heterotic crosses. Genetic analysis and combing ability were analyzed following Hayman's and Griffing's diallel analyses, respectively. Hybrids projecting positive or negative potency ratio with >1.0 value for those traits is also the sign of incidence of over-dominance in desirable direction, and heterosis breeding is important to improve those traits in maize. Hayman's approach indicated dominance variance and the proportion of +/genes was higher than additive variance in all characters. Griffing's analysis also demonstrated the presence of over-dominance governing the traits. The preponderance of dominant gene action coupled with low heritability observed for days to silking, ear length and grain yield suggests the importance of heterosis breeding. Substantial differences in general combing ability and specific combining ability were noticed in all the studied traits except 1000-grain weight. The parental line CML-509 was found to be the best general combiner for days to tasseling and silking, CML-498 for plant height, ear height and grain yield, CML-395 for ear length and grain yield. The crosses CML-498×CML-376, CML-498×CML-395 and CML-376×CML-247 showed significant positive specific combining ability effect for grain yield along with higher mean values over commercial check varieties.

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“…Diallel crosses have been used for a long time in genetic research to determine the inheritance of a trait among a set of genotypes and to identify superior parents for hybrid or cultivar development (Aliu et al, 2009). These methods have been highly practiced in different crops like maize (Njeri et al, 2017;Owusu et al, 2017;Lay and Razdan, 2017;Brahmbhatt et al, 2018), rice (Huang et al, 2015;Kundan et al, 2013), Brassica (Tian et al, 2017) and cassava (Tumuhimbise et al, 2014). Hence, it is necessary to understand the nature and magnitude of gene action as well as combining ability of yield and its attributes.…”

Section: Introductionmentioning

confidence: 99%

Genetic action and potence ratio of maize in an 88 diallel cross growing under saline condition

Rohman¹,

Omy²,

Begum³

et al. 2019

J. Plant Breed. Crop Sci.

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Twenty-eight hybrids of Zea mays L. produced in 2015-16 from 8×8 half diallel mating design were evaluated along with their parents in 2016-2017 under saline condition to find out genetic action and potency ratio of some agronomic and yield contributing traits. Genetic action and potency ratio were analyzed following Hayman's diallel analyses and Smith's formula, respectively. Genetic parameter like additive variance (D), dominance variance (H 1), proportion of positive and negative genes in the parents (H 2), relative frequency of dominant and recessive alleles in the parents (F), dominance effect over all loci in heterozygous phase (h 2) suggested that traits like days to tasseling, days to silking, anthesis silking interval, ear height and number of grains/plant are governed by dominant alleles in these traits. Contrariwise, the data of plant height and 100-grain weight were shown to have higher frequency of recessive alleles. Proportion of genes with positive and negative [(4DH 1) 0.5 + F]/[(4DH 1) 0.5-F] effects suggested the asymmetrical distribution of dominant and recessive alleles for all the traits except yield/plant. Under saline condition heritability in narrow sense (h 2 n) was found very low which indicates a possible strong influence of stress in the growing environment. These parameters along with Vr-Wr graphs and potency ratio indicated overdominance in desirable direction, and thus, heterosis breeding is important to improve those traits in maize under salinity.

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Estimation of Heterosis through Diallel Crosses in Maize (Zea mays L.) for Grain Yield and Protein Content

Cited by 3 publications

References 6 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.)

Inheritance and combing ability in maize using a 7x7 diallel cross

Genetic action and potence ratio of maize in an 88 diallel cross growing under saline condition

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