Selection of potato clones for tuber yield, vine maturity and frying quality
ABSTRACT Development of Brazilian potato cultivars adapted to different growing conditions, production systems and regions of the country is very important to increase the competitiveness of the national potato chain. In this sense, the objective of this work was to verify the performance of advance...
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Veröffentlicht in: | Horticultura brasileira 2018-06, Vol.36 (2), p.276-281 |
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Format: | Magazinearticle |
Sprache: | eng |
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Zusammenfassung: | ABSTRACT Development of Brazilian potato cultivars adapted to different growing conditions, production systems and regions of the country is very important to increase the competitiveness of the national potato chain. In this sense, the objective of this work was to verify the performance of advanced potato clones for tuber yield traits, vine maturity and frying quality. An experiment was carried out in Pelotas-RS in spring, 2014. A set of nine advanced potato clones and two control cultivars were evaluated using a randomized complete block design with four replicates. Plots consisted of single rows of 20 plants spaced at 0.80 m between rows and 0.30 m between plants. The data of each trait were submitted to the deviance analysis, estimated the genetic values and selected the best genotypes using selection indices of the sum of ranks and the lowest distance from the ideotype. Clones F131-08-26 and F183-08-01, and the check ‘Asterix’ were distinguished for yield of marketable tubers. F183-08-01 and the control stood out for specific gravity and average tuber weight. Clone F161-07-02 ranked among the best for specific gravity, frying color and vine maturity. F97-07-04 and F183-08-01 and the check ‘Asterix’ were the best according to the selection indices, however, would result in losses in the frying color and vine maturity traits.
RESUMO A obtenção de cultivares nacionais de batata adaptadas a diferentes condições de cultivo, sistemas e regiões do Brasil é muito importante para aumentar a competitividade da cadeia brasileira da batata. Neste sentido, o objetivo deste trabalho foi verificar o desempenho de clones de batata para caracteres de rendimento de tubérculos, ciclo vegetativo e qualidade de fritura. O experimento foi realizado em Pelotas-RS na primavera de 2014. Foi avaliado um conjunto de nove clones de batata e duas cultivares testemunhas, no delineamento experimental de blocos casualizados com quatro repetições e as parcelas constituídas de uma linha com 20 plantas, espaçadas em 0,80 m entre linhas e 0,30 m entre plantas. Os dados de cada caráter avaliado foram submetidos à análise de deviance. Foram estimados os valores genéticos e selecionados os melhores genótipos por índices de seleção da soma dos “ranks” e da menor distância ao tipo ideal. Para rendimento de tubérculos comerciais destacaram-se os genótipos F131-08-26, Asterix e F183-08-01, sendo os dois últimos genótipos também destaques para peso específico e massa média de tubérculos. O clo |
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ISSN: | 0102-0536 1806-9991 |
DOI: | 10.1590/s0102-053620180222 |