Temperature on Annona cherimola Mill. x Annona squamosa L. seed germination

  • Deived Carvalho Universidade Estadual de Londrina
  • Maria Cruz Universidade Estadual de Londrina
  • Elisete Osipi Universidade Estadual do Norte do Paraná
  • Jethro Osipe Universidade Estadual do Norte do Paraná
  • Ronan Colombo Universidade Estadual de Londrina
  • Conceição Cossa Universidade Estadual do Norte do Paraná

Resumo

In the production of atemoya rootstocks (Annona cherimola Mill. x Annona squamosa L.), the seed propagation is hindered by dormancy resulting in low germination, similar to temperature that affects the percentage, speed, and uniformity of germination. This study aimed to evaluate the effect of constant and alternating temperature on the seed germination of three atemoya genotypes: �??Gefner�??, �??Thompson�?? and �??PR-1�?? at 25°C and 20-30°C (8-16h) using germination paper in absence of light, with four samples of 25 seeds per treatment. The evaluations occurred each seven days up to 35 days, which were assessed: germinated seeds, seedlings, dormant seeds and germination speed index. The experimental design was completely randomized in a factorial arrangement of 3x2, using four replications. The water content, fresh and dry matter of 100 seeds were analyzed in a completely randomized scheme with four replications. The alternating temperature 20-30°C provided favorable condition and higher germination percentage for atemoya seeds, achieving 0.638 for germination speed index and 37% for percentage of germination at 35 days. �??Gefner�?? and �??Thompson�?? cultivars presented higher percentage of germination than �??PR-1�??.

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Biografia do Autor

Deived Carvalho, Universidade Estadual de Londrina
Centro de Ciências Agrárias
Maria Cruz, Universidade Estadual de Londrina
Centro de Ciências Agrárias
Elisete Osipi, Universidade Estadual do Norte do Paraná
Fitotecnia
Jethro Osipe, Universidade Estadual do Norte do Paraná
Fitotecnia
Ronan Colombo, Universidade Estadual de Londrina
Centro de Ciências Agrárias
Conceição Cossa, Universidade Estadual do Norte do Paraná
Fitotecnia

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Publicado
2019-12-15
Como Citar
Carvalho, D., Cruz, M., Osipi, E., Osipe, J., Colombo, R., & Cossa, C. (2019). Temperature on Annona cherimola Mill. x Annona squamosa L. seed germination. ASB Journal, 5(2), 40. https://doi.org/10.33158/ASB.2019v5i2p40
Seção
Artigos

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