Combining ability and heterosis of relevant fruit traits of tomato genotypes for industrial processing

Figueiredo, Alex Sandro Torre; Resende, Juliano Tadeu Vilela de; Faria, Marcos Ventura; Paula, Juliana Tauffer de; Schwarz, Kélin; Zanin, Daniel Suek

doi:10.1590/1984-70332015v15n3a27

Cited by 8 publications

(9 citation statements)

References 7 publications

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“…These authors recommended the selection of some hybrids for release as commercial cultivars and other hybrids for use as base populations to obtain new elite inbred lines with disease resistance. Figueiredo et al (2015;2016a) worked to improve processing tomatoes and evaluated ten elite lines, their crossings and two processing tomato hybrids for yield and postharvest fruit traits. These authors observed high genetic variability among the inbred lines, experimental hybrids and commercial hybrids and concluded that the best hybrids can be selected for release with the commercial hybrids.…”

Section: Resultsmentioning

confidence: 99%

“…For VC content, the formation of six groups of genotypes with identical means was observed with the hybrids Granadero, Laura and Red Spring, which belong to the genotype group with the highest averages (Table 3). In the industrialization of tomato pulp, it was necessary to reduce the pH to prevent the proliferation of microorganisms, and an appropriate pH value should be less than 4.5 (Figueiredo et al, 2015;Soares;Rangel, 2012). In this experiment, the hybrid with a lower pH value was Laura, and this hybrid was isolated from other hybrids and had a pH of 4.37 (Table 3).…”

Section: Resultsmentioning

confidence: 99%

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Genetic divergence among processing tomato hybrids and formation of new segregating populations

et al. 2017

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Tomato is the most important vegetable species and has a strong bottleneck effect in its domestication and evolution. In exploring the existing genetic variability in commercial germplasm, germplasm has been proven to be an excellent alternative to obtain inbred lines in order to provide superior new hybrids in the future. In this sense, the objective of this study was to estimate the genetic distance among commercial processing tomato hybrids via agronomical and quality postharvest fruit traits with the aim of suggesting promising crosses for the formation of base populations for tomato breeding. Ten hybrids of processing tomato were evaluated in a complete randomized block design with three replicates. In total, eleven agronomic and postharvest fruit quality traits were evaluated. The genetic distances were estimated between the hybrids using the generalized Mahalanobis (

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Genetic divergence among processing tomato hybrids and formation of new segregating populations

et al. 2017

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“…In accordance with Figueiredo et al (2015), the GCA effects make it possible to advise farmers on the selection of the most promising intrapopulation parents for improvement programs. The standard-deviation of the contrasts, together with the GCA estimates, help in this selection, which are considered superior to those parents whose GCA estimates were at least two times greater than the standard-deviations (CRUZ; REGAZZI; CARNEIRO, 2012).…”

Section: Resultsmentioning

confidence: 99%

COMBINING ABILITY OF FORAGE WATERMELON ( Citrullus lanatus var. citroides ) GERMPLASM

et al. 2017

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-The aim of this study was to identify parents and promising hybrid combinations for the improvement of forage watermelon. Five parents were evaluated: BGCIA 996 (1), BGCIA 997 (2), BGCIA 998 (3), BGCIA 228 (4), Jojoba (5) and ten F 1 hybrids, which were obtained from balanced diallel crosses. The experimental design was in a complete randomized block, with three replications. The morphoagronomic and bromatological traits were evaluated. The highlights were the progenitors BGCIA 997, BGCIA 998, BGCIA 228 and Jojoba for protein content, fruit yield, in vitro digestibility of dry matter and number of seeds, respectively. The hybrid 1x4 stood out for fruit length, seed number, and ethereal extract. The hybrid 2x3 stood out for rind and pulp thickness while the hybrids 3x4, 3x5 and 4x5 had exceptional digestibility, protein content and fruit yield, respectively. The analysis of the standard deviation of the SCA estimates of both SD (Sij-Sik) and SD (Sij-Skl) indicated that no hybrids were found that had SCA estimates twice that of SD (Sij-Sik) or SD (Sij-Skl), except for the hybrid 1x4 for the number of seeds per fruit. These results suggest that the parents were more promising than the hybrids. Similarly, the GCA estimates favor the intrapopulation method, which will promote greater efficiency in selection for genetic gains.Keywords: Diallel analysis. Genetic improvement of forage crops. Semiarid. CAPACIDADE DE COMBINAÇÃO EM GERMOPLASMA DE MELANCIA FORRAGEIRA (Citrullus lanatus var. citroides)RESUMO -O objetivo deste estudo foi identificar genitores e combinações híbridas promissoras para o melhoramento de melancia forrageira. Foram avaliados cinco genitores; BGCIA 996 (1), BGCIA 997 (2), BGCIA 998 (3), BGCIA 228 (4), Jojoba (5) e dez híbridos F 1 's, obtidos a partir de cruzamentos dialélicos balanceados. O delineamento experimental foi em blocos casualizados completos, com três repetições. Avaliou -se as características morfoagronômicas e bromatológicas. Destacaram-se os genitores BGCIA 997, BGCIA 998, BGCIA 228 e Jojoba, quanto ao teor de proteína, produção de frutos, digestibilidade in vitro da matéria seca e número de sementes, respectivamente. O híbrido 1x4 destacou-se para comprimento dos frutos, número de sementes e extrato etéreo. O híbrido 2x3 destacou-se para espessura de casca e polpa, enquanto os híbridos 3x4, 3x5 e 4x5 destacaram-se pela digestibilidade, teor de proteína e produção de frutos, respectivamente. A análise do desvio padrão das estimativas de CEC tanto de DP (Sij-Sik) quanto de DP(Sij-Skl) indicaram que não foram encontrados híbridos com estimativas de CEC duas vezes maiores que DP(Sij-Sik) ou DP(Sij-Skl), exceto para o híbrido 1x4 para número de sementes por fruto. Estes resultados sugerem que os progenitores foram mais promissores do que os híbridos. Da mesma forma, as estimativas da CGC favorecem o método intrapopulacional, o qual promoverá maior eficiência na seleção para ganhos genéticos.Palavras-chave: Análise dialélica. Melhoramento genético de forrageiras. Semiárido.

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“…Therefore, tomato breeders pay more attention towards producing new hybrids to suffice the ever-increasing demands of growers and customers alike. Figueiredo et al (2015) found wide range of heterosis values among different tomato genotypes. Shakil et al (2017) indicated that maximum heterosis (78.11%) for marketable yield of tomato was found in F 1 hybrid resulting from a cross between lines 017856 and Roma.…”

Section: Introductionmentioning

confidence: 86%

Heterosis, Potence Ratio and Correlation of Vegetative, Yield and Quality Traits in Tomato Genotypes and their Performance under Arid Region

Alsadon

Solieman

Wahb-Allah

et al. 2020

IJARe

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Background: The possibility of selecting the best genotypes to develop good hybrid varieties of tomatoes, as well as heterosis, potence ratio and correlation of vegetative characteristics, yield and quality in tomato genotypes and their performance under arid region.Methods: Four commercial tomato cultivars (Money Maker, Pakmore VF, Strain-B and Tanshet Star) and two breeding lines (L05960 and TL01899) and their 15 F1 hybrids, using a half-diallel cross, under arid conditions were used to estimate heterosis, potence ratio and correlation coefficients among all possible pairs of important tomato traits.Result: various degrees of dominance effects for some traits were detected in the general performances of the F1 hybrids, while, other traits illustrated the presence of partial- to under-recessiveness. Heterosis percentages reflected positive desirable effects in ten F1 hybrids for some traits. Most F1 hybrids outperformed their respective parents for fruit set, fruit length, fruit diameter, total soluble solids, fruit dry weight, number of fruits per plant and total fruit yield per plant. Some of the genotypes (i.e., parents and/ or hybrids) offer opportunities as a genetic source of heat tolerant breeding genetic material adapted to high temperature under the arid conditions reported in this study. Significant positive and desirable correlations were found between 41 possible pairs of traits, whereas significant negative and undesirable correlations were found between 13 possible pairs of the traits.

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Combining ability and heterosis of relevant fruit traits of tomato genotypes for industrial processing

Abstract: -The objective was to estimate the combining ability of lines and heterosis in industrial tomato

Cited by 8 publications

References 7 publications

Genetic divergence among processing tomato hybrids and formation of new segregating populations

Genetic divergence among processing tomato hybrids and formation of new segregating populations

COMBINING ABILITY OF FORAGE WATERMELON ( Citrullus lanatus var. citroides ) GERMPLASM

Heterosis, Potence Ratio and Correlation of Vegetative, Yield and Quality Traits in Tomato Genotypes and their Performance under Arid Region

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