Data/hora: 13/06/2024 01:11:09

Provedor de dados: 	54	
País: 	Brazil	
Título: 	Genetic variability in salt tolerance during germination of Stylosanthes humilis H.B.K. and association between salt tolerance and isozymes	
Autores: 	Lovato,Maria Bernadete; Martins,Paulo Sodero.	
Data: 	1997-09-01	
Ano: 	1997	
Resumo: 	Variation in salt tolerance of six natural populations of Stylosanthes humilis from three ecogeographic regions, Mata (wet tropical climate), Agreste and Sertão (semi-arid tropical climate) of Pernambuco State, Northeast Brazil, was evaluated on germination in 201 mM NaCl. There were significant differences among families of all populations for germination percentage and of five populations (except Tamandaré, from Mata) for germination rate. Populations from semi-arid regions presented high coefficients of genetic variation, those from Agreste being higher than those from Sertão. Populations from Mata showed low coefficients of genetic variation. The coefficients of genotypic determination were high for five populations, except Tamandaré, both for germination percentage ( &gt; or =  0.89) and for germination rate ( &gt; or =  0.79), indicating the possibility of selection for salt tolerance in these populations. An electrophoretic analysis of esterase and peroxidase isozymes was also performed in the six populations, and correlations were estimated between salt tolerance and allelic frequencies. The analysis of salt tolerant and salt sensitive families of populations from Agreste suggested an association of alleles of a peroxidase locus with salt tolerance during germination in the Caruaru population	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300014	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S0100-84551997000300014	
Formato: 	text/html	
Fonte: 	Brazilian Journal of Genetics  v.20 n.3 1997	
Fonte: 	info:eu-repo/semantics/openAccess