produtividade de linhagens de feijoeiro em campinas yielding variability of dry bean cultivars at campinas
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ID: 155763
1963
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Abstract
Numerosas introduções de feijoeiro (Phaseolus vulgaris L.) já foram estudadas pela Seção de Genética do Instituto Agronômico de Campinas nestes últimos anos, procedentes das regiões fornecedoras de feijão ao Estado de São Paulo, de outros países produtores e dos centros de sua origem e de sua dispersão. Aquelas que se mostraram de potencialidade econômica foram avaliadas em ensaios comparativos de produção, os quais ascenderam a 28, no período 1958 a 1961, todos localizados em Campinas. Dêsses ensaios, 15 foram plantados no "período da sêca" e 13 no "período das águas", a fim de se terem informações sôbre a reação de mais de 160 linhagens nas condições prevalecentes nos dois períodos do ano. Em todos êles usou-se como testemunha a linhagem Mulatinho 1-208, produtiva e selecionada há alguns anos pela Seção de Genética. No período da sêca, 68 seleções chegaram a produzir, em pelo menos um ano, 25% mais do que a testemunha. Do material estudado em três anos consecutivos, apenas duas novas seleções, Rosinha 1454.9 e Prêto 147, deram, respectivamente, 36% e 32% mais do que a Mulatinho 1-208. Considerando as seleções avaliadas por dois anos nesse período, 11 chegaram a dar 25% mais do que a testemunha, sendo 9 do cultivar 'Rosinha' e duas do 'chumbinho'. No período das águas, das introduções examinadas em três anos consecutivos (1958/59 a 1960/61), 4 linhagens mostraram-se bem mais produtivas do que a testemunha, a saber: Rosinha 1454-10, Rosinha 1558, Rosinha 1277 e Prêto 147. Das seleções avaliadas por dois anos, 14 deram 25% mais do que a testemunha, c, destas, 11 eram do cultivar 'Rosinha' e 3 do 'Mulatinho'. Nesses 28 ensaios, as seleções do cultivar 'Roxinho', embora com boas qualidades culinárias, mostraram-se bem menos produtivas, não sendo recomendadas para plantio extensivo. As seleções do cultivar 'Rosinha' com maior capacidade de produção nas duas épocas do ano, Rosinha 1454-1, Rosinha 1454-4, Rosinha 1454-10, I-43-C-7, Rosinha 52, Rosinha 1459 e a seleção Prêto 147, vêm sendo avaliadas mais extensivamente em novos ensaios comparativos regionais, antes de serem preconizadas para plantio em larga escala.
During the last 30 years hundreds of dry bean introduction from all over the world and from several regions in Brazil have been studied in several experiment stations of the Instituto Agronômico. After one or two years of observation the most promising ones with good agronomic characteristics are. tested in comparative trials with the best selections which are grown at present, in the dry and the rainy season. From 1958 to 1961, 15 such trials were established in the dry period and 13 were planted in the rainy season. A total of 160 lines were tested to observe the yielding variability among the introductions, all of them compared with the standard 'Mulatinho 1-208'. In the dry period 68 selections gave 25% more than the tester at least in one year. Considering only the lines which were grown for three consecutive years it was noticed that Rosinha 1454-9 and Preto 147 produced, in average, 36 and 32% more than 'Mulatinho 1-208'. The results obtained in trials planted during the rainy season were more promising than those recorded for the dry season, since four new selections gave at least 25% more than the standard Mulatinho 1-208, in a theree year period. Three of the selections belong to the Rosinha (pink-seeded), and one to the Black group. Comparisons made between the yielding capacity of the different groups without taking in to account individual progenies, confirmed previous findings that Rosinha is one of the best yielder group and Roxinho has the lowest yielding capacity. The following selections within the Rosinha group are recomended for planting in any of the two bean growing seasons: 1454-1, 1454-4, 1454-10, I-43-C-7, 52, 1459. The strain Preto 147 could be used in regions where black seeded beans are accepted.
During the last 30 years hundreds of dry bean introduction from all over the world and from several regions in Brazil have been studied in several experiment stations of the Instituto Agronômico. After one or two years of observation the most promising ones with good agronomic characteristics are. tested in comparative trials with the best selections which are grown at present, in the dry and the rainy season. From 1958 to 1961, 15 such trials were established in the dry period and 13 were planted in the rainy season. A total of 160 lines were tested to observe the yielding variability among the introductions, all of them compared with the standard 'Mulatinho 1-208'. In the dry period 68 selections gave 25% more than the tester at least in one year. Considering only the lines which were grown for three consecutive years it was noticed that Rosinha 1454-9 and Preto 147 produced, in average, 36 and 32% more than 'Mulatinho 1-208'. The results obtained in trials planted during the rainy season were more promising than those recorded for the dry season, since four new selections gave at least 25% more than the standard Mulatinho 1-208, in a theree year period. Three of the selections belong to the Rosinha (pink-seeded), and one to the Black group. Comparisons made between the yielding capacity of the different groups without taking in to account individual progenies, confirmed previous findings that Rosinha is one of the best yielder group and Roxinho has the lowest yielding capacity. The following selections within the Rosinha group are recomended for planting in any of the two bean growing seasons: 1454-1, 1454-4, 1454-10, I-43-C-7, 52, 1459. The strain Preto 147 could be used in regions where black seeded beans are accepted.
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pompeu1963bragantiaprodutividade
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| Authors | ;Antonio Sidney Pompeu |
| Journal | revista espanola de salud publica |
| Year | 1963 |
| DOI |
10.1590/S0006-87051963000100027
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