Seed physiological potential of “dedo-de-moça” pepper in relation to maturation stages and rest periods of the fruits

ABSTRACT One of the main problems in pepper seed production is the uneven maturation of the fruits due to the continuous flowering period of the plant, making it difficult to harvest all the fruits at the same time. Thus, studies on fruit maturation stage and seed physiological potential are extreme...

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Veröffentlicht in:Horticultura brasileira 2018-12, Vol.36 (4), p.486-491
Hauptverfasser: Gonçalves, Leandro SA, Gomes, Gisely Paula, Damasceno Junior, Clério Valentin, Queiroz, Robison Alessandro de, Takahashi, Lucia SA, Costa, Denis S da, Nunes, Maria PBA
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Sprache:eng
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Zusammenfassung:ABSTRACT One of the main problems in pepper seed production is the uneven maturation of the fruits due to the continuous flowering period of the plant, making it difficult to harvest all the fruits at the same time. Thus, studies on fruit maturation stage and seed physiological potential are extremely important in order to identify the appropriate harvest time, avoiding seed deterioration. The aim of this study was to evaluate the physiological potential of five genotypes of “dedo de moça” pepper seeds (Capsicum baccatum var. pendulum) in three maturation stages (green, orange and red), with and without 10-day rest period after harvest date. Physiological potential and vigor of seeds were evaluated through germination tests (first count, accelerated aging and electrical conductivity). The observed results were submitted to variance analysis, comparing averages through Tukey test and principal components analysis. In general, red fruits reflected seed maturity since they provided maximum germination. On the other hand, even fruits harvested at a maturation stage prior to red (green and orange), showed the benefits of the rest periods on germination and vigor characteristics, being this result more evident in green fruits which, initially, had lower physiological potential. The evaluated genotypes showed lower physiological potential of fruits harvested at the green stage, without 10-day rest period. RESUMO Um dos principais problemas na produção de sementes de pimentas é a maturação desuniforme dos frutos. Isso ocorre devido ao florescimento contínuo da planta, dificultando que a colheita seja realizada de uma única vez. Dessa forma, estudos sobre o estádio de maturação dos frutos e o potencial fisiológico das sementes são de grande relevância para se identificar o momento adequado de colheita evitando a deterioração das sementes. O presente trabalho teve como objetivo avaliar o potencial fisiológico de sementes de pimenta de cinco genótipos de “dedo-de-moça” (Capsicum baccatum var. pendulum) em três estádios de maturação (verde, alaranjado e vermelho), sem e com repouso de 10 dias dos frutos a partir da colheita. As avaliações foram realizadas quanto ao potencial fisiológico representado pelos testes de germinação e vigor (primeira contagem, condutividade elétrica e envelhecimento acelerado). Os resultados observados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey, bem como à análise de componentes principais. De modo ger
ISSN:0102-0536
1806-9991
DOI:10.1590/s0102-053620180410