Avaliação e seleção de híbridos de cacaueiro em Rondônia

Carvalho, C. G. P. de; Almeida, Caio Marcio Vasconcellos Cordeiro de; Cruz, Cosme Damião; Machado, Paulo Fernandes Rodrigues

doi:10.1590/s0100-204x2001000800006

Cited by 15 publications

(16 citation statements)

References 7 publications

(5 reference statements)

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“…This finding suggests that the mean of a line reflected its adaptability as defined by Lin and Binns (1988). These results are in line with those of Carvalho (1999), who obtained negative close to unit correlations between the mean over all locations and P i in a cocoa hybrids evaluation in Rondônia. The fact that the yield parameter weighed by the line differential behavior in each environment is a component of the P i , P id and P if statistics makes them measures of adaptability and stability (Carneiro, 1998).…”

Section: Mean and Pisupporting

confidence: 88%

“…In this study, the adaptability and stability of soybean lines were assessed using data from yield trials carried out by the Embrapa Soja breeding program in several location in the state of Paraná during the 1989/90 to 1990, 1991, 1992, 1994, 1995, 1996, 1998, 1999, 200024 0 02´44" 585 Haplorthox Cascavel 1990, 1991, 1992, 1994, 1995, 1996, 1998, 1999, 2000 57´21" 781 Acrohumox Castro 1992Castro , 1993Castro , 1994Castro , 1995Castro , 1996Castro , 1997 47´28" 999 Acrohumox 1990, 1991, 1992, 1994, 1995, 199623 0 33´04" 753 Haplorthox Guarapuava 1990, 1991, 1992, 1994, 1995, 1996, 1998, 1999, 2000 23´43" 1098 Acrohumox Londrina 1990, 1991, 1992, 1994, 1995, 1996, 1998…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adaptability and stability study of soybean lines developed for high yield in Paraná State using four methodologies

Guilherme

Carvalho²,

Arias

et al. 2002

CBAB

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An adaptability and stability study was carried out using soybean yield data from several locations in Paraná State, obtained from 1990 to 1999. The main objectives were: a) to check the efficiency of the Embrapa Soja breeding program for selecting the highest yielding lines with specific (regional) or broad adaptation; b) to analyze the performance of the control cultivars under favorable and unfavorable conditions; c) to identify the best stability methodology for inbred line evaluation. The evaluated lines were classified into early (L), semiearly (M) and medium (N) maturity groups. A randomized complete block design with four replications was used in each location and all analyses were carried out by maturity group. The number of M maturity lines that scored higher than the controls BR-16 and Embrapa 4 increased along the years, especially in unfavorable environments. On the other hand, the number of L and N maturity groups scoring higher than the controls either remained constant or fluctuated (increasing or decreasing) with time. The controls FT-Guaíra, Embrapa 4, BR-16 and FT-10 and the great majority of the tested lines showed broad adaptation. IAS 5 and FT-Abyara showed adaptation to poor environments and also broad adaptation. The analysis of the means in favorable and unfavorable environments was the most efficient method for soybean line evaluation. A methodology to classify soybean genotypes was proposed, based on these means.

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Section: Mean and Pisupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Adaptability and stability study of soybean lines developed for high yield in Paraná State using four methodologies

Guilherme

Carvalho²,

Arias

et al. 2002

CBAB

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“…Latossolo Vermelho-Escuro Guarapuava 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999 1990,1991,1992,1993,1994,1995,1996,1997,1998,1999,2000 1994,1995,1996,1997,1998,1999 1990,1991,1992,1993,1994 1990, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000 24 o 17'2'' 333 Latossolo Roxo eutrófico Ponta Grossa -1 1990, 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000 Ponta Grossa -2 1991, 1992, 1993, 1994, 1995, 1996, 1997…”

Section: Methodsmentioning

confidence: 99%

Interação genótipo x ambiente no desempenho produtivo da soja no Paraná

Carvalho

Arias

Toledo

et al. 2002

Pesq. agropec. bras.

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Os objetivos deste trabalho foram conhecer o grau de representatividade dos locais no Estado do Paraná, onde são conduzidos os ensaios de avaliação final de produtividade de linhagens de soja no período 1990/2000 e realizar estudo de adaptabilidade e estabilidade das linhagens no ano agrícola 1999/2000. As linhagens testadas pertencem aos grupos de maturação precoce, semiprecoce e médio. Verificaram-se padrões de similaridade de resposta das linhagens dos três grupos de maturação, em alguns locais, em todos ou na maioria dos anos testados. Esses padrões dependeram do grupo de maturação. Contudo, as avaliações em Londrina/Cambé, Campo Mourão, Guarapuava/Mariópolis e Sertaneja foram sempre indicadas. O local Ponta Grossa - 1 foi útil na discriminação de linhagens do grupo precoce, e Ponta Grossa - 2, dos grupos semiprecoce e médio. O estudo de adaptabilidade e estabilidade revelou que as linhagens precoces BR95-7613, BRS 137, OC95-3006 e CD96-518 tiveram bom desempenho produtivo, adaptabilidade geral e previsibilidade. A linhagem semiprecoce BR96-25619 mostrou a maior produtividade, tanto em ambientes favoráveis como nos desfavoráveis, e pode ser indicada como tendo adaptabilidade geral. Outras linhagens semiprecoces de bom desempenho, como BR96-18710 e BRS 154, são indicadas para ambientes favoráveis e geral (ambientes favoráveis e desfavoráveis), respectivamente. As linhagens OC95-3194, BR96-12086 e BR96-16185, do grupo de maturação médio, destacam-se nos ambientes favoráveis e desfavoráveis.

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“…Este índice es importante en la selección de clones productivos debido a que el número de mazorcas sanas por planta no siempre es un indicador de mejoramiento genético en términos de mayor rendimiento. Esto concuerda con Carvalho et al (2001) quienes mencionan que a pesar de la relevancia de la producción de frutos, el peso de almendras es el carácter que más interesa al productor.…”

Section: Análisis Estadísticounclassified