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Genotype-environment interaction and phenotypic stability for girth growth and rubber yield of Hevea clones in São Paulo State, Brazil Genet. Mol. Biol.
Gonçalves,Paulo de Souza; Bortoletto,Nelson; Martins,Antonio Lúcio Mello; Costa,Reginaldo Brito da; Gallo,Paulo Boller.
The best-yielding, best vigour and most stable Hevea clones are identified by growing clones in different environments. However, research on the stability in Hevea brasiliensis (Willd. Adr. ex Juss.) Muell.-Arg. is scarce. The objectives of this work were to assess genotype-environment interaction and determine stable genotypes. Stability analysis were performed on results for girth growth and rubber yield of seven clones from five comparative trials conducted over 10 years (girth growth) and four years (rubber yield) in São Paulo State, Brazil. Stability was estimated using the Eberhart and Russell (1966) method. Year by location and location variability were the dominant sources of interactions. The stability analysis identified GT 1 and IAN 873 as the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hevea brasiliensis; Rubber tree; Coefficient of determination; Stability parameters.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000400007
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Temporal stability for unpredictable annual climatic variability for Hevea genotype selection BABT
Gonçalves,Paulo de Souza; Moraes,Mário Luiz Teixeira de; Gouvêa,Lígia Regina Lima; Aguiar,Adriano Tosoni da Eira; Scallopi Júnior,Erivaldo José.
The objective of this study was to assess genotype-year interaction and determine temporal stable genotypes across six years of rubber yield evaluation. Stability analyses were performed by Eberhart and Russell method for rubber yield. Twenty-five genotypes were analyzed in a randomized complete block design with three replications. The best genotype in one year was not same always in the other year. The genotype components were partitioned into linear (genotypes within year) and nonlinear (pooled deviations) components. Significant mean square for linear components was predictable. This indicated that the performance of genotypes across the years for rubber yield could be predicted. Among the analyzed genotypes the IAC 40 also was considered highly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hevea brasiliensis; Genotype x year interaction; Rubber tree; Rubber yield; Stability parameters.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000100002
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