Capacidade combinatória de linhagens de milho avaliada por meio de testadores adaptados à safrinha

Bolson, Edson; Scapim, Carlos Alberto; Clóvis, Luiz Rafael; Amaral, Antônio Teixeira do; Freitas, Ismael Lourenço de Jesus

doi:10.1590/0034-737x201663040009

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…Therefore, for plant height, the selection of plants with lower values is interesting. A shorter cycle length facilitates an optimized exploitation of the areas by different crops in rotation and a greater chance of phytosanitary stability and frost resistance, which is essential in second season crops (Bolson et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Diallel analysis of popcorn populations for yield, popping expansion and resistance to fall armyworm

et al. 2020

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The objective of this study was to estimate the varietal and heterotic effects related to grain yield, popping expansion and resistance of popcorn against fall armyworm. Twelve open-pollinated varieties were intercrossed in a complete diallel mating scheme. The 66 experimental hybrids, together with their parents and controls Zapalote Chico, BRS 1030 and IAC 125, resulted in a total of 81 treatments, evaluated in an experiment in a 9x9 triple-square lattice design, in Maringá-PR and Araruna-PR. The data were analyzed according to the diallel model of Gardner and Eberhart (1966). The following traits were evaluated: grain yield (GR); mean plant height (PH) and insertion height of the highest ear in the stem (EI); silking (SIL); final plant density (FD) and popping expansion (PE). Variety PR 023 is indicated for intrapopulation improvement for grain yield. Regarding popping expansion, the results indicated cross SAM x UNB 2U C5 for recurrent reciprocal selection. In relation to resistance to fall armyworm, the varieties PARA 172, PA 091, PR 023, and SE 013 were selected for intrapopulation improvement. On the other hand, the crosses PARA 172 x BOZM 260, PA 091 x BOYA 462 and SAM x UNB 2U C5 can be indicated for interpopulation improvement.

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Section: Resultsmentioning

confidence: 99%

Diallel analysis of popcorn populations for yield, popping expansion and resistance to fall armyworm

et al. 2020

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“…Rosa et al (2020) also reported the good performance of tester 70.H26.1 in exploring the genetic variability among forage maize progenies. In this context, the tester that provides the highest estimates of genetic variance among topcross hybrids is the most appropriate, allowing the expression of the genetic variability of the progenies and highlighting the ones with greatest genetic merit (Guimarães et al, 2012;Bolson, Scapim, Clovis, Amaral Junior, & Freitas, 2016;Miotto et al, 2016;Figueiredo et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Selection of S3 progenies of forage maize based on topcrosses with different testers

et al. 2021

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Maize forage is commonly used as silage in milk and beef cattle livestock production systems. Despite the wide variety of maize hybrids with high potential for grain production, few available hybrids have been developed exclusively for forage aptitude. The present study aimed to select S3 maize progenies derived from the single hybrid AS1572 based on the combining ability of forage traits in topcrosses with testers AG8025, 70.H26.1, and MLP102. The 135 resulting topcross hybrids were assessed in partial diallel in Guarapuava and Rio Bonito do Iguaçu, Paraná State, Brazil. Were evaluated the contents of neutral detergent fiber (NDF, %DM) and acid detergent fiber (ADF, %DM), forage dry matter yield (DMY, t ha-1), and in situ digestibility of forage dry matter (DIG, %DM). For all evaluated traits, the variability allowed us to select superior progenies. Progenies 3.1, 22.1, and 39.1stood out in terms of NDF, ADF, and DIG, whereas progenies 47.1, 73.1, 79.1, and 90.2 were efficient in increasing the forage dry matter yield. The testers AG8025 and 70.H26.1, of narrow genetic base, are the best to explore genetic variability among progenies.

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“…Daronch et al (2014) stated that breeding program success depends on efficiently selecting parents for promising hybrid and segregating populations. Various techniques, including the widely used diallel cross (Bolson et al 2016, Fasahat et al 2016, Rodrigues et al 2018, aim to enhance the likelihood of obtaining superior segregating populations. This method provides estimates of useful genetic parameters that allow selection of promising parents for obtaining hybrids, assisting understanding of the genetic effects responsible for expression of a determined trait (Cruz, 2006).…”

Section: Crop Breeding Articlementioning

confidence: 99%

Combining ability of common bean in a complete diallel cross under water deficit

Gonçalves,

Silva,

Chiorato

et al. 2024

Bragantia

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The aim of this study was to identify drought-tolerant parents and combinations of common bean based on general and specific combining abilities. A complete diallel was conducted, including the reciprocals, among 12 parents, obtaining 132 populations.These populations and respective parents were evaluated in pots in a greenhouse in a randomized block experimental design with three replications and placed under intermittent water deficit applied in the pre-flowering. Physiological, morphological, and agronomic traits were evaluated, and general combining ability (GCA), specific combining ability (SCA), and reciprocal effect (RE) were estimated. Significant effects were found among the genotypes for most of the traits confirming genetic variability among populations. The additive effects were more expressive than the non-additive effects, with reciprocal effect for some traits. The Carioca Precoce and SER 16 parents exhibited significant GCA, contributing alleles favorable to additive effects for increasing grain yield and harvest index. Significance of SCA and RE was not observed for grain yield. However, the SEA 5 (pollen receptor) × SER 16, Carioca Precoce (pollen receptor) × BRS FP403, and the reciprocal Carioca Precoce (pollen donor) × BRS FP403 hybrid combinations achieved positive estimates for harvest index, which is an indirect selection trait for grain yield. This study allowed selection of progenies coming from the parents Carioca Precoce and SER 16, as manifested favorable traits related to grain yield.

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Capacidade combinatória de linhagens de milho avaliada por meio de testadores adaptados à safrinha

Cited by 6 publications

References 7 publications

Diallel analysis of popcorn populations for yield, popping expansion and resistance to fall armyworm

Diallel analysis of popcorn populations for yield, popping expansion and resistance to fall armyworm

Selection of S3 progenies of forage maize based on topcrosses with different testers

Combining ability of common bean in a complete diallel cross under water deficit

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