Research Article

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Heterosis is the superior performance of heterozygous individuals and has been widely exploited in plant breeding, although the underlying regulatory mechanisms still remain largely elusive. To understand the molecular basis of heterosis in maize, in this study, roots and leaves at the seedling stage and embryos and endosperm tissues 15 days after fertilization of 2 elite hybrids and ... more

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We examined the genetic diversity of papaya (Carica papaya) based on morpho-agronomic and molecular data. Twenty-seven genotypes grown in Brazil were analyzed with 11 AFLP primer combinations, 23 ISSR markers, 22 qualitative, and 30 quantitative descriptors. For the joint analyses, we used the Gower algorithm (Joint Gower) and the average value of the individual dissimilarity ... more

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The identification of germplasm genetic variability in breeding programs of the common bean (Phaseolus vulgaris) is essential for determining the potential of each combination of parent plants to obtain superior genotypes. The present study aimed to estimate the extent of genetic diversity in 172 lines and cultivars of the common bean by integrating five tests of value for ... more

P.C.B. Cardoso; M.M. Veiga; I.P.P. de Menezes; P.A.M.R. Valdisser; T.C.O. Borba; L.C. Melo; M.J. Del Peloso; C. Brondani; R.P. Vianello
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N.C. Pereira; R.E.F. Munhoz; T.S. Bignotto; R. Bespalhuk; L.B. Garay; C.R.N. Saez; V.A. Fassina; A. Nembri; M.A. Fernandez
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Breeding; Fibroblast; Growth; QTL; SNP

In the past, the focus of broiler breeding programs on yield and carcass traits improvement led to problems related to meat quality. Awareness of public concern for quality resulted in inclusion of meat quality traits in the evaluation process. Nevertheless, few genes associated with meat quality attributes are known. Previous studies mapped quantitative trait loci for weight at 35 and 42 ... more

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Brachiaria brizantha; Breeding; Forage grass; Microsporogenesis

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M.S. Pagliarini; C.B. Valle; E.M. Santos; D.V. Mendes; Z.H. Bernardo; A.B. Mendes-Bonato; N. Silva; V. Calisto

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