Divergência Genética Entre Cultivares De Feijão Comum Cultivados No Estado Do Tocantins

Tavares, Taynar Coelho de Oliveira; Sousa, Sérgio Alves de; Lopes, Marília Barcelos Souza; Veloso, Danilo Alves; Fidélis, Rodrigo Ribeiro

doi:10.32404/rean.v5i3.1892

Cited by 9 publications

(7 citation statements)

References 8 publications

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“…Among the most used methods to characterize the plant genetic diversity, the multivariate approaches consist in a simultaneous evaluation of a wide range of traits that can make it possible to visualize different characteristics of a data set. These techniques have generated relevant information for studies on plant genetic resources, breeding and conservation since these methods allow, simultaneously, the measurement of different traits (TAVARES et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Selection of Superior Genotypes of Lima Bean Landraces by Multivariate Approach

et al. 2022

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The knowledge of genetic diversity in plant population is essential to the success of plant breeding programs. Thus, previous characterization of landraces is one of the first steps before the indication of genotypes to these plant breeding programs. This study aimed to characterize, through morphological traits, and estimate the genetic diversity in landraces of lima bean (Phaseolus lunatus L.). Genetic diversity was estimated by using multivariate methods that selected individual landraces to be indicated for farmers and consumers. According to morphological traits proposed by Biodiversity International, the genotypes UFPI-667 and UFPI- 682 showed higher dissimilarity and high potential to be used in crosses since they are genetically distant and complementary. The principal component analysis identified positive and significant phenotypic associations between variables: pod length, pod width, and grain production. According to the multivariate methods used, the landraces UFPI-666, UFPI-650, UFPI-651, UFPI-687, UFPI-658, UFPI-673, UFPI-667, and UFPI-674 are potential candidates for selection since they have relevant features for lima bean breeding, such as shorter cycles and higher grain production. This study showed that multivariate analysis can be used as an effective tool to find potential traits in lima bean and can assist the lima bean breeders in the selection of potential landraces. Accessions UFPI-667 and UFPI-682 can be indicated as genitors for breeding programs, as they are genetically distant and complementary in their characteristics.

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Section: Introductionmentioning

confidence: 99%

Selection of Superior Genotypes of Lima Bean Landraces by Multivariate Approach

et al. 2022

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“…Thus, it is suggested that there is genetic diversity of cowpea cultivars used in this study in relation to height in response to potassium fertilization. In a study with genetic divergence between common bean cultivars, there was a group with higher means (p<0.01) composed of five cultivars, where means ranged from 75.8 to 64.4 cm (Tavares et al, 2018). However, Santos et al (2017) in an experiment with three cowpea cultivars did not observed significant differences between the cultivars evaluated for the height variable.…”

Section: Resultsmentioning

confidence: 90%

Growth and production of cowpea beans under potassium doses in soil of cerrado in Amapá, Brazil

Costa,

Oliveira,

Melo

et al. 2023

Braz. J. Biol.

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The cowpea bean [Vigna unguiculata (L.) Walp.], a legume of great socioeconomic importance, it was previously cultivated exclusively for subsistence and commercial purposes, especially in the North and Northeast regions. This crop has a low production cost and high nutritional value, in addition to a high potential for productivity growth and expansion to other regions. The objective of this work was to evaluate parameters of growth and production in cowpea culture, as a function of potassium fertilization in soil of the cerrado of Amapá. The parameters of growth and production of the cowpea culture were evaluated, as a function of potassium fertilization in the soil of the cerrado of Amapá. The experiment was conducted in a greenhouse, using a completely randomized experimental design, with four replications, in a 5x2 factorial scheme, totaling 40 experimental units, which were composed of plastic pots containing 7 dm3 of soil collected from the arable layer (0-20 cm ) of a typical Hyperdystrophic Yellow Argisol, with a sandy clay loam texture, in a cerrado area in the municipality of Porto Grande-AP. The factors consisted of the control treatment (without K), four doses of K (45, 90, 135 and 180 kg ha-1) in the form of potassium chloride, and two cowpea cultivars (Pretinho and BRS Tumucumaque). The cultivar BRS Tumucumaque shows better growth and production of cowpea plants. Doses of 90 kg ha-1 provided greater height (98.75 cm) and stem diameter (10.0 mm). As for production, the dose of 135 kg ha-1 caused greater grain weight gain (5.25 g) and dry mass of pods (13.92 g), and the doses of 90 and 180 kg ha-1 induced greater number and length of pods (3.16 pods) respectively. These results show better responsiveness of the BRS Tumucumaque cultivar at doses of 90, 135 and 180 kg ha-1 in the type of soil where the study was conducted.

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“…Observou-se que todas as variáveis avaliadas nos 36 genótipos de milho apresentaram diferenças significativas (p≤ 0,05 e p≤ 0,01) (Tabela 2). Estes resultados demonstram que houve, no mínimo, uma cultivar diferindo das demais, sinalizando uma ampla variabilidade fenotípica observada entre híbridos e variedades que permitiram, com precisão, a caracterização de indivíduos superiores [30].…”

Section: Resultados E Discussõesunclassified

Caracterização de diferentes classes genéticas de milho cultivados em região semiárida quanto ao potencial forrageiro

et al. 2021

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RESUMO O milho é bastante cultivado na região semiárida brasileira e contém alto valor energético na dieta animal. Sabendo disto, objetivou-se caracterizar diferentes classes genéticas de milho quanto ao seu potencial forrageiro nas condições semiáridas de Sergipe. Para isso, foram avaliados 36 genótipos em blocos incompletos em Látice quadrado reticulado 6x6, com duas repetições, na fazenda experimental da Embrapa – Semiárido, em Graccho Cardoso-SE. As variáveis analisadas foram: altura da planta, diâmetro do colmo, peso de planta, massa fresca, massa seca, porcentagem de massa seca e massa de forragem. Com os dados obtidos foi realizada análise de variância com auxílio do software SAS 9,4 e, para a geração dos componentes principais (CP) e gráficos, foi utilizado o software R com o pacote “GGEBiplotGUI”. Todas as variáveis apresentaram diferenças significativas entre classes genéticas. Os dois primeiros componentes principais contemplaram 83,9% da variação total. O autovalor do primeiro CP (CP1) foi de 4,11, considerado muito significativo, já que a soma de todos os autovalores foi de 6,99. A porcentagem de massa seca, diâmetro do colmo, peso de planta, massa fresca, seca e de forragem obtiveram maior capacidade de discriminar as classes genotípicas. Os híbridos intervarietais ficaram mais próximos do genótipo “ideal”. A maior correlação positiva foi entre massa de forragem e massa seca. Os híbridos simples e triplos destacaram-se individualmente na altura da planta e porcentagem de massa. A massa seca e de forragem obtiveram maiores médias em todas as classes, exceto nos híbridos simples. As variedades foram as menos estáveis nas avaliações. Os híbridos intervarietais apresentaram maior potencial forrageiro e os duplos, topcross e variedades maior variabilidade genética, as demais classes não são indicadas para agricultores de baixa e média tecnologia quando cultivados em região semiárida para forragem de milho.

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Divergência Genética Entre Cultivares De Feijão Comum Cultivados No Estado Do Tocantins

Cited by 9 publications

References 8 publications

Selection of Superior Genotypes of Lima Bean Landraces by Multivariate Approach

Selection of Superior Genotypes of Lima Bean Landraces by Multivariate Approach

Growth and production of cowpea beans under potassium doses in soil of cerrado in Amapá, Brazil

Caracterização de diferentes classes genéticas de milho cultivados em região semiárida quanto ao potencial forrageiro

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