Estratégias de predição e efeitos de ambientes na avaliação de populações segregantes de feijão

Rocha, Gilmar Silvério da; Carneiro, José Eustáquio de Souza; Carneiro, Pedro Crescêncio Souza; Poersch, Nerison Luís; Lima, Marilene Santos de; Silva, Lêlisângela Carvalho da

doi:10.1590/0034-737x201562050003

Cited by 7 publications

(10 citation statements)

References 14 publications

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“…In relation to the carioca seed coat lines obtained by the bulk method, estimates of h² stood out for P (87.60%), PH (83.50%), and L of 40 d (99,00%) and 120 d (99.59%), and for the black seed coat lines, estimates of h² stood out for BY (77.11%), SY (95.25%), and L of 40 d (99.84%). Rocha et al (2015) evaluated the yield of 48 carioca and black seed coat common bean progenies and reported broad sense heritability estimates ranging from 6.80% to 70.31%, results that are similar to those presented in this study. Silva et al (2013) compared lines obtained by the bulk and single seed descent (SSD) methods and found maximum values of broad sense heritability for BY of 49.8%.…”

Section: Estimates Of Genetic Parameterssupporting

confidence: 81%

Selection of common bean lines obtained by the genealogical and bulk methods for disease resistance and agronomic traits

Ribeiro¹,

Rovaris²,

Esteves³

et al. 2019

Chil. j. agric. res.

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A common bean (Phaseolus vulgaris L.) breeding program aims to obtain high yielding lines with quality bean seeds, disease resistance, and upright plant growth habit. The aims of this study were to evaluate the resistance of 527 common bean lines to the principal physiological races of Colletotrichum lindemuthianum and the Fusarium oxysporum f. phaseoli; to estimate genetic parameters and verify the efficiency of the genealogical and bulk methods in conducting these lines. Of these 527 lines, 279 were conducted by the genealogical method and 248 by the bulk method. For the field experiment, the Federer augmented block experimental design was used. Two commercial cultivars carioca seed coat were used as controls for the lines the same color, and more two commercial cultivars for the black seed coat lines. The traits evaluated in the field were plant height (PH), plant growth habit (P), bean seed yield (BY), sieve yield (SY), and lightness of the bean seed coat (L). Of the 527 lines evaluated for anthracnose, 207 were resistant, 57 moderately resistant, and 263 susceptible. For fusarium wilt, 58 were resistant, 53 moderately resistant, and 96 susceptible. For the carioca seed coat lines obtained by the genealogical method, the heritability (h²) estimates stood out for P, BY, L at 40 d, and gain from selection for BY. The h² stood out for black seed coat lines in the PH and SY traits, it can be concluded that the lines obtained by the genealogical method had better performance for all the traits.

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Section: Estimates Of Genetic Parameterssupporting

confidence: 81%

Selection of common bean lines obtained by the genealogical and bulk methods for disease resistance and agronomic traits

Ribeiro¹,

Rovaris²,

Esteves³

et al. 2019

Chil. j. agric. res.

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“…In grain yield, there was a negative linear regression with seed depth, and a positive linear regression with hypocotyl diameter and longitudinal distance between plants in the row (Figure 2). Rocha et al (2015) also observed positive correlations between common bean grain yield and hypocotyl diameter.…”

Section: Resultsmentioning

confidence: 63%

“…Longer hypocotyl lengths may negatively affect crop yield. In any crop, sowing depth and seed distribution in the row should be adequate to ensure seed germination and seedling emergence and development (Martins et al, 1999;Rodrigues et al, 2016). According to Cortez et al (2006), all plant spacings from 0.5 to 1.5 times the mean spacing (MS) expected is considered acceptable.…”

Section: Introductionmentioning

confidence: 99%

The effect of longitudinal distribution and seed depth on grain yield of common bean

2018

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-The aim of this study was to quantify the longitudinal distribution of plants in the row and seed depth and their effects on hypocotyl length and diameter and on yield components and grain yield of common bean, specifically the cultivar BRSMG Realce in a Latossolo soil in the Cerrado (Brazilian tropical savanna). The data on plant distances in the row were obtained in the field with the aid of a measuring tape in four rows of 2.5 m length. Seed depth was determined by measuring the length of the hypocotyl that was within the soil after pulling up the plant. Hypocotyl diameter was evaluated at ground level using a digital caliper. Descriptive (univariate) statistical analysis was applied to the data. Linear correlations were established among distribution of distance between plants in the row, the depth of sowing, the characteristics of the hypocotyls, and grain yield data of common bean. Negative linear regression was observed between grain yield with sowing depth, and positive linear regression between hypocotyl diameter and longitudinal spacing between plants in the row. In the sowing process, special attention should be given to seed distribution in the row to avoid subsequent uneven plant distribution and to seed depth to avoid yield loss.Index terms: Phaseolus vulgaris, hypocotyl diameter, hypocotyl length, plant spacing, sowing quality.Distribuição longitudinal e profundidade da semente afetando a produtividade de grãos do feijão-comum RESUMO -Objetivou-se com o presente estudo quantificar a distribuição longitudinal de plantas na linha e profundidade da semente no solo e seus efeitos no comprimento e diâmetro do hipocótilo, nos componentes de produção e produtividade de grãos de feijão-comum, cultivar BRSMG Realce, em latossolo do Cerrado. Os dados da distância entre plantas na linha foram obtidos em campo com o auxílio de trena em quatro linhas de feijão de 2,5 m de comprimento. A profundidade de semeadura foi determinada medindo-se o comprimento do hipocótilo dentro do solo após o arranquio da planta. O diâmetro do hipocótilo foi avaliado ao nível do solo utilizando-se paquímetro digital. Os dados foram submetidos à análise estatística descritiva (univariada). Estabeleceram-se correlações lineares entre a distribuição da distância entre plantas na linha, da profundidade de semeadura e as características do hipocótilo e dados de produtividade de grãos do feijão-comum. Observou-se regressão linear negativa da produtividade de grãos com profundidade de semeadura e positiva com diâmetro do hipocótilo e espaçamento longitudinal entre plantas na linha. Especial atenção deve ser dada no processo de semeadura para evitar distribuição desuniforme de plantas da linha de semeadura e na profundidade da semente para evitar reduções na produtividade.Termos para indexação: Phaseolus vulgaris, comprimento do hipocótilo, diâmetro do hipocótilo, espaçamento entre plantas, qualidade de plantio.1

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“…Conducting segregating populations is considered the most critical, laborious, and costly phase of an autogamous breeding program (Rocha et al 2015;Pontes Júnior et al 2016). Although there is a 50% reduction in the frequency of heterozygous loci for each generation of self-fertilization, the probability of selecting a genotype with a high concentration of favorable alleles in early generations is very low.…”

Section: Introductionmentioning

confidence: 99%

A new proposal for the m + a methodology in segregating populations of cowpea

et al. 2020

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The evaluation of segregating populations in plant breeding programs is an onerous and time-consuming process. Early identification of populations with genetic potential can be done by m + a methodology. However, the possibility of a modification in the traditional methodology in order to make it more efficient, that is, faster and cheaper, was envisaged. Thus, the objective of this study was to compare the genetic gains obtained by both methodologies, the traditional one and the proposed modification. For this, ten segregating bean-cowpea populations were evaluated at two distinct levels of homozygous F 3:4 and F 3:5. Genetic values were predicted by two different statistical genetic models. This was possible due to the methodology proposed here to present a much shorter execution time than the traditional methodology. Thus, with a shorter evaluation time, the breeding program manager can plan the evaluation of a larger number of populations in a short time.

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Estratégias de predição e efeitos de ambientes na avaliação de populações segregantes de feijão

Cited by 7 publications

References 14 publications

Selection of common bean lines obtained by the genealogical and bulk methods for disease resistance and agronomic traits

Selection of common bean lines obtained by the genealogical and bulk methods for disease resistance and agronomic traits

The effect of longitudinal distribution and seed depth on grain yield of common bean

A new proposal for the m + a methodology in segregating populations of cowpea

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