Abstract
ABSTRACT: For good germination, seeds need mainly oxygen, water and adequate temperatures, the latter being the most relevant factor in germination speed. Thus, the main objective of this work was to identify favorable temperatures for the germination of corn seeds (BRS-4104). The work was performed in the Seed Analysis Laboratory of the Assis Gurgacz Foundation University Center, in Cascavel, Parana State. The experimental design was entirely randomized (DIC). Five temperatures were studied: 15 oC, 20 oC, 25 oC, 30 oC and 35 oC, with 8 evaluation periods and 5 repetitions, with 25 seeds in each. The following variables were evaluated: germination velocity index (IVG), mean germination time (TMG), first count (PC) and germination of corn (G). The experiment means were submitted to variance analysis and compared by Tukey test, at 5% probability for all variables, using the ASSISTAT program. It was concluded that the ideal temperature for seed germination of the biofortified corn cultivar (BRS-4104) is between 20 and 35 oC. KEYWORDS: Ecophysiology, Seed germination, Zea mays.
Highlights
EFEITOS DA TEMPERATURA NA GERMINAÇÃO DE SEMENTES DE MILHO BIOFORTIFICADO EFFECTS OF TEMPERATURE ON GERMINATION OF BIOFORTIFIED CORN SEEDS SILVA, Ana Paula Rocha da; NEPOMUCENO, Taiane Aparecida Ribeiro
The work was performed in the Seed Analysis Laboratory of the Assis Gurgacz Foundation University Center, in Cascavel, Paraná State
The experiment means were submitted to variance analysis and compared by Tukey test, at 5% probability for all variables, using the ASSISTAT program
Summary
Todo o conteúdo expresso neste artigo é de inteira responsabilidade dos seus autores. RESUMO: Para uma boa germinação, as sementes necessitam principalmente de oxigênio, água e temperaturas adequadas, sendo esta última o fator mais relevante na velocidade germinativa. O principal objetivo deste trabalho foi identificar temperaturas favoráveis à germinação de sementes de milho (BRS-4104). O trabalho foi realizado no Laboratório de Análise de Sementes do Centro Universitário da Fundação Assis Gurgacz, em Cascavel, Estado do Paraná. Foram estudadas 5 temperaturas: 15 oC, 20 oC, 25 oC, 30 oC e 35 oC, com 8 períodos de avaliação e 5 repetições, sendo 25 sementes em cada. As médias do experimento foram submetidas a análise de variância e comparadas pelo teste de Tukey, a 5% de probabilidade para todas as variáveis, a partir do programa ASSISTAT. Concluiu-se que a temperatura ideal para germinação de sementes da cultivar de milho biofortificado (BRS-4104) está entre 20 e 35 oC.
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