Phaseolus lunatus L. is a species with great diversity, which can be explored in breeding programs when adequately characterized. In this work, we evaluated the phenotypic variations of P. lunatus seeds by image analysis using seeds from 13 genotypes from three states: Sergipe (G1, G2, G3, G4, G5, G6, G7, and G8), Bahia (G9 and G10) and Alagoas (G11, G12, and G13). For the analyses, the weight of 100 seeds was estimated, and, in the Groundeye (TBit®), the morphometry by area (mm²), maximum diameter (mm) and minimum diameter (mm), and the descriptors dominant color and RGB color system. The morphometric variables were submitted to variance analysis by the F test, and the means clustered by the Skott-Knott test at 5%. The data were submitted to Pearson correlation analysis (t-Student at 5%), grouped according to dissimilarity by the UPGMA, and represented in the dendrogram. The evaluated characters were submitted to principal component analysis (PCA). Concerning the dominant color, there was a predominance of orange in nine genotypes. As for the RGB color system, G1 presented the highest values and G11 the lowest. G7 was superior for morphometric variables, except for the weight of 100 seeds. There is a positive and signi cant association for morphometry. There are two homogeneous and distinct groups in the dendrogram, and the rst two principal components were responsible for 86.80% of the genotypes' variation. Therefore, applying high-resolution images for phenotypic characteristics of creole bean seeds is a promising nondestructive tool aiming for selection.
Phaseolus lunatus L. is a species with great diversity, which can be explored in breeding programs when adequately characterized. In this work, we evaluated the phenotypic variations of P. lunatus seeds by image analysis using seeds from 13 genotypes from three states: Sergipe (G1, G2, G3, G4, G5, G6, G7, and G8), Bahia (G9 and G10) and Alagoas (G11, G12, and G13). For the analyses, the weight of 100 seeds was estimated, and, in the Groundeye (TBit®), the morphometry by area (mm²), maximum diameter (mm) and minimum diameter (mm), and the descriptors dominant color and RGB color system. The morphometric variables were submitted to variance analysis by the F test, and the means clustered by the Skott-Knott test at 5%. The data were submitted to Pearson correlation analysis (t-Student at 5%), grouped according to dissimilarity by the UPGMA, and represented in the dendrogram. The evaluated characters were submitted to principal component analysis (PCA). Concerning the dominant color, there was a predominance of orange in nine genotypes. As for the RGB color system, G1 presented the highest values and G11 the lowest. G7 was superior for morphometric variables, except for the weight of 100 seeds. There is a positive and significant association for morphometry. There are two homogeneous and distinct groups in the dendrogram, and the first two principal components were responsible for 86.80% of the genotypes' variation. Therefore, applying high-resolution images for phenotypic characteristics of creole bean seeds is a promising nondestructive tool aiming for selection.
O tomate (Lycopersicon esculentum) é um produto climatérico apresentando assim curto tempo de vida útil pós-colheita. O uso exógeno de cloreto de cálcio (CaCl2) e da radiação ultravioleta (UV), tem se mostrado eficiente na manutenção da firmeza e da qualidade de diversos frutos. Diante disso, este estudo objetivou avaliar os efeitos da aplicação exógena de cloreto de cálcio e radiação ultravioleta na conservação pós-colheita de frutos de tomate. Para isso, os frutos foram: submersos em cloreto de cálcio a 1% e expostos a radiação ultravioleta; imersos somente em cloreto de cálcio a 1%; e frutos expostos apenas à radiação ultravioleta. Frutos não submersos no CaCl2 e não expostos a radiação UV foram utilizados como controle. Após aplicação dos tratamentos os frutos foram armazenados em condições ambientes e avaliados nos tempos 0, 3, 6, 9, 12 e 15 dias após a colheita. Avaliou-se, perda de massa fresca, firmeza do fruto, cor da casca, teor de sólidos solúveis, pH, acidez titulável total, razão entre os sólidos solúveis totais (SST) e acidez titulável (ATT). Verificou-se o aumento da perda de massa fresca, ao longo do tempo em todos os tratamentos. Frutos não imersos ou aqueles imersos em cloreto de CaCl2+UV apresentaram maior manutenção da firmeza. Pode-se concluir que, os frutos submetidos à radiação ultravioleta apresentaram menor perda de massa fresca ao final das análises, e o uso do cloreto de cálcio juntamente com a radiação UV mantiveram a firmeza dos frutos ao longo do armazenamento.
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