Adaptability and stability in rubber tree progenies under different environmental conditions

Adaptability and stability in rubber tree progenies under different environmental conditions
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Adaptability and stability in rubber tree progenies under different environmental conditions

The aim of this work was to select progenies with high adaptability and stability from the dry rubber yield (PBS), of genotypes from a three-year-old rubber tree population, installed in three different locations (Selvíria, MS, Votuporanga, SP and Colina, SP), by the MHPRVG (harmonic average perform...

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Translated title: Adaptabilidade e estabilidade de progênies de seringueira sob diferentes condições ambientais
Journal Title: Pesquisa Florestal Brasileira
Main Author: Flávio Cese Arantes
Other Authors: Erivaldo José Scaloppi Junior;
Paulo Souza Gonçalves;
Mario Luiz Teixeira de Moraes;
Elaine Cristine Piffer Gonçalves;
Marcos Deon Vilela de Resende
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Language: English
Get full text: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/436
Resource type: Journal article
Source: Pesquisa Florestal Brasileira; Vol 33, No 73 (Year 2013).
DOI: http://dx.doi.org/10.4336/2013.pfb.33.73.436
Publisher: Embrapa Florestas
Usage rights: Reconocimiento - NoComercial - SinObraDerivada (by-nc-nd)
Subjects: Sciences --> Biodiversity Conservation
Sciences --> Biology
Sciences --> Environmental Sciences
Applied Sciences --> Agriculture, Multidisciplinary
Applied Sciences --> Agronomy
Applied Sciences --> Forestry
Abstract: The aim of this work was to select progenies with high adaptability and stability from the dry rubber yield (PBS), of genotypes from a three-year-old rubber tree population, installed in three different locations (Selvíria, MS, Votuporanga, SP and Colina, SP), by the MHPRVG (harmonic average performance relative breeding values) method predicted by BLUP. The progenies were installed in a randomized block design with 30 treatments (progenies), three replications and 10 plants per plot, with spacingof 3.00 x 3.00 m (Selvíria, MS) and 1.50 x 1.50 m (Colina, SP and Votuporanga, SP). The PBS presented considerable genetic coefficient variability, ranging from 23.03 to 27.82% and average heritability ranging from 0.47 to 0.99, indicating the high value of the progeny tests in rubber tree breeding programs. The MHPRVG method provided a genetic gain ranging from 11 to 38% in 10 progenies to the PBS and allowed the selection of progenies with high predicted yield potential. 
Translated abstract: O objetivo deste trabalho foi selecionar progênies com alta adaptabilidade e estabilidade a partir da produção de borracha seca (PBS), de genótipos de uma população de três anos de idade, instalada em três diferentes locais (Selvíria, MS, Votuporanga, SP e Colina, SP), pelo método MHPRVG (média harmônica da performance relativa do valorgenético) predito por BLUP. As progênies foram instaladas em blocos casualizados com 30 tratamentos (progênies), três repetições e 10 plantas por parcela, num espaçamento de 3.00 x 3.00 m (Selvíria, MS) e 1.50 x 1.50 m (Colina, SP e Votuporanga, SP). A PBS apresentou um considerável coeficiente de variabilidade genética, variando de 23.03 a 27.82% e a herdabilidade média variou de 0.47 a 0.99, indicando o alto valor de um teste de progênies em programas de melhoramento genético de seringueira. O método MHPRVG proporcionou um ganho genético de 11 a 38% em 10 progênies para PBS e permitiu a seleção de progênies com alto potencial predito de produção.