Genetic distances between popcorn populations based on molecular markers and correlations with heterosis estimates made by diallel analysis of hybrids

Munhoz, Roxelle Ethienne Ferreira; Prioli, Alberto José; Amaral, Antônio Teixeira do; Scapim, Carlos Alberto; Simon, Gustavo André

doi:10.4238/vol8-3gmr592

Cited by 23 publications

(13 citation statements)

References 46 publications

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“…This result is widely reported in the literature, for example, Arnhold et al (2009) and Broccoli and Burak (2004) confirmed that grain yield is inversely correlated (negative genetic association) with popping expansion. The Spearman correlation coefficient estimated by Munhoz et al (2009) was not significant for 96 S3 popcorn families. Broccoli and Burak (2004) mentioned that the negative association between popping expansion and yield can affect the yield gains in simultaneous selection of a breeding population.…”

Section: Resultsmentioning

confidence: 51%

Genetic evaluation of popcorn families using a Bayesian approach via the independence chain algorithm

Rodovalho¹,

Mora

Arriagada

et al. 2014

Crop Breed. Appl. Biotechnol.

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Section: Resultsmentioning

confidence: 51%

Genetic evaluation of popcorn families using a Bayesian approach via the independence chain algorithm

Rodovalho¹,

Mora

Arriagada

et al. 2014

Crop Breed. Appl. Biotechnol.

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“…Based on the investigations on different maize genotypes with different molecular markers, relatively few suppositions have been proposed to explain the low correlations genetically. However, the fact is that this problem is not completely solved and will need further investigations aimed at analysis techniques that use molecular markers and that search for genetic explanations for the existence of significant correlations between hybrid performance and GD for some plant species and the absence of correlation in others (Munhoz et al 2009). Based on the present results we report that RAPD technique is also inefficient in analyzing of genetic structures of short duration sub-tropical maize for determination of heterosis and SCA for grain yield, and therefore can not be used in predicting hybrid performance.…”

Section: Resultsmentioning

confidence: 98%

Heterosis, molecular diversity, combining ability and their interrelationships in short duration maize (Zea mays L.) across the environments

Devi

Singh

2010

Euphytica

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Five inbred lines, 10 single cross maize (Zea mays L.) hybrids and two standard cultivars as check were used to study the combining abilities and heterosis under three environmental conditions. Random amplified polymorphic DNAs (RAPDs) markers were used to study the genetic diversity (GD) and further to analyze relationship of RAPDs based GD with combining ability and heterosis in short duration maize. Spearman's rank correlation coefficients and linear regressions were analyzed to identify the most important factor determining heterosis and per se performance of the hybrids. Variances due to general combining ability (GCA), specific combining ability (SCA) and their interactions with environment were found to be significant. Twenty random primers generated 179 RAPD fragments. Of these, 102 RAPD fragments were polymorphic. GD was determined using Jaccard's similarity coefficient, and a dendogram was constructed by UPGMA cluster analysis. The RAPDs based GD exhibited non-significant negative or positive association, non-significant linear regression along with very low coefficient of determination (R 2 ) with SCA, high and mid parent heterosis (HP and MP) and per se performance of the hybrids. Significant positive correlations and regressions along with high coefficients of determination were recorded for SCA with HP, MP and per se performance of the hybrids. The HP and MP also established significant positive association and linear regression along with high coefficient of determination with per se performance of hybrids whereas the parental mean did not establish any significant correlations with the GD, HPH, MPH and grain yield of F 1 s. The present investigation, therefore, did not find any role of RAPDs based GD in determining hybrid heterosis and hybrid performance in short duration sub-tropical maize. The SCA, however, has emerged as the most important factor in determination of heterosis as well as per se performance of the hybrids in short duration maize.

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“…Popcorn breeding programs in Brazil have emerged with the use of intra and interpopulational recurrent selection to increase productivity and popping expansion (Daros et al 2004;Faria et al 2008;Freitas Júnior et al 2009;Amaral Júnior et al 2010); composite obtainment (Rangel et al 2008;Vieira et al 2009a;Scapim et al 2010); evaluation and introduction of disease resistance in commercial materials (Miranda et al 2002;Vieira et al 2009b); evaluation of the genetic diversity for agronomical traits and molecular markers (Dandolini et al 2008;Miranda et al 2008;Munhoz et al 2009;Leal et al 2010;Trindade et al 2010); use of in vitro culture (Ricci et al 2007;Fernandes et al 2008); hybrids obtainment and its evaluation (Vieira et al 2009c;Vieira et al 2009a;Silva et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Combining ability of popcorn lines for seed quality and agronomic traits

et al. 2011

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Popcorn breeding programs in Brazil have emerged but despite some advances there is still a lack of material performance studies specially regard to seed quality, in different agricultural seasons. This research was carried out to estimate the popcorn combining ability from biparental crosses between eight tropical and one temperate lines in two agricultural seasons (2008 and 2009) with regard to eight traits related to seed quality, in addition to three agronomic traits related to popping expansion. Method 4, proposed by Griffing (Model 1), was used to verifying the importance of the dominance effect in the genetic control of the seed quality traits, favouring the identification of superior hybrids through seed tests in the laboratory with low cost. The lines from Zélia and CMS42 were promising in obtaining hybrids with superior seed quality and greater popping expansion. The hybrids Zélia 9 IAC-112, CMS42 9 UEM M2-1, CMS43-1 9 IAC-112 and UEM M2-2 9 Zaeli expressed superior SCA for grain yield, popping expansion and at least two seed quality traits. These hybrids are materials of interest for cultivation in different planting seasons.

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Genetic distances between popcorn populations based on molecular markers and correlations with heterosis estimates made by diallel analysis of hybrids

Cited by 23 publications

References 46 publications

Genetic evaluation of popcorn families using a Bayesian approach via the independence chain algorithm

Genetic evaluation of popcorn families using a Bayesian approach via the independence chain algorithm

Heterosis, molecular diversity, combining ability and their interrelationships in short duration maize (Zea mays L.) across the environments

Combining ability of popcorn lines for seed quality and agronomic traits

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