Data/hora: 01/06/2024 17:35:28

Provedor de dados: | Revista Ciência Agronômica (RCA)
País: | Brazil
Título: | Genetic diversity and coefficient of kinship among potential genitors for obtaining cultivars of energy cane1
Autores: | Silveira,Luís Cláudio Inácio da; Brasileiro,Bruno Portela; Kist,Volmir; Daros,Edelclaiton; Peternelli,Luiz Alexandre.
Data: | 2015-06-01
Ano: | 2015
Palavras-chave: | Saccharum spp; Germplasm; Biomass; Breeding.
Resumo: | The aim of this study was to evaluate the genetic diversity and coefficient of kinship in 50 sugarcane genotypes, in addition to identifying potential parents for obtaining cultivars of energy cane. Diversity analysis was carried out based on the evaluation of morphological and agronomical characteristics. The coefficient of kinship was obtained from information on pedigree. According to analyses carried out, genotypes were separated into two groups. Group G1 consisted of 13 genotypes from the species Saccharum spontaneum and Saccharum robustum. The other 37 genotypes were from back-crosses with Saccharum officinarum, and were allocated to group G2. The genotypes displayed low values for genetic similarity and coefficient of kinship, indicating broad genetic variability in the population. Carrying out crosses involving genotypes from group G1, especially those with a fibre content of over 17% (IJ76-293, 57NG12, IN84-82, IN84-88, IM76-228 and UM69/001), with genotypes from group G2 which have high stalk yield (RB92579, RB83102, RB047232, RB867515, RB971723, RB937570, RB011941, RB75126, MEX68-200, Co62175 and CP691052), should be explored, with the aim of developing energy cane cultivars. Analyses of diversity and of the coefficient of kinship made it possible to identify two heterotic groups. Moreover, it was possible to identify two potential parent groups for obtaining energy cane cultivars. Genetic distances which are based on both morpho-agronomical data and on pedigree, should be used in a complementary way, with a view to having more information when choosing the best parents.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000200358
Editor: | Universidade Federal do Ceará
Relação: | 10.5935/1806-6690.20150015
Formato: | text/html
Fonte: | Revista Ciência Agronômica  v.46 n.2 2015
Fonte: | info:eu-repo/semantics/openAccess