Overcoming dormancy in stored and recently harvested Passiflora cincinnata Mast. seeds

Authors

  • Regiana dos Santos Moura Universidade Federal do Recôncavo da Bahia
  • Mauricio Antônio Coelho Filho Embrapa mandioca e fruticultura, Cruz das Almas
  • Hans Raj Gheyi Universidade Federal do Recôncavo da Bahia
  • Onildo Nunes de Jesus Embrapa mandioca e fruticultura, Cruz das Almas
  • Lucas Kennedy Silva Lima Universidade Federal do Recôncavo da Bahia
  • Tatiana Goes Junghans Embrapa mandioca e fruticultura, Cruz das Almas

DOI:

https://doi.org/10.14393/BJ-v34n5a2018-39451

Keywords:

Conservation, passion fruit, GA4 7 N-(phenyl methyl)-aminopurine, Germination

Abstract

The treatment of seeds using growth regulators can overcome seed dormancy and increase the emergence and development of seedlings. The objective of this research was to evaluate the effect of different concentrations of GA4+7 + N-(phenyl methyl)-aminopurine on the dormancy breaking of Passiflora cincinnata Mast. seeds recently harvested and stored for six years. The study was conducted in a greenhouse at Embrapa Cassava and Tropical Fruits, in completely randomized design, in a 2 x 4 factorial scheme, with the following factors: year of seed harvest (2010 and 2016) and the emergence promoter GA4+7 + N-(phenyl methyl)-aminopurine at four concentrations (0%; 0.03%; 0.45% and 0.90%), with 4 replicates of 25 seeds. Emergence percentage, first count, emergence speed index, number of leaves, root length, stem diameter, dry matter of shoots, roots and total, and root/shoot ratio were evaluated. The results showed that GA4+7 + N-(phenyl methyl)-aminopurine is recommended to overcome dormancy of Passiflora cincinnata in recently harvested seeds (2016) and increase the emergence of seedlings from seeds stored for six years in cold chamber (2010). The emergence promoter concentration of 0.03% can be used to overcome dormancy in recently harvested seeds and maintains the vigor of seeds stored for six years. Passiflora cincinnata seeds remain physiologically viable for six years and their emergence is potentiated by the use of GA4+7 + N-(phenyl methyl)-aminopurine.

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Author Biography

Regiana dos Santos Moura, Universidade Federal do Recôncavo da Bahia

Possui graduação em Agronomia e Mestrado em Agronomia - Solos e Nutrição de Plantas, ambos pela Universidade Federal do Piaui-CPCE-UFPI. Doutoranda em Engenharia Agrícola. Revisora de Periódico Nacional (Revista Caatinga). Tem experiência na área de produção de mudas de hortaliças, fertigação e nutrição de plantas. Atuou como professora no Programa Nacional de Acesso ao Ensino Técnico e Emprego no Colégio Agrícola de Bom Jesus-PI CTBJ. Atualmente è doutoranda na Universidade Federal do Recôncavo da Bahia - UFRB, no programa de Pós graduação em Engenharia Agrícola, desenvolvendo projeto intitulado "Efeito da salinidade em diferentes tipos de mudas de maracujazeiro".

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Published

2018-10-11

How to Cite

DOS SANTOS MOURA, R., COELHO FILHO, M.A., GHEYI, H.R., DE JESUS, O.N., SILVA LIMA, L.K. and JUNGHANS, T.G., 2018. Overcoming dormancy in stored and recently harvested Passiflora cincinnata Mast. seeds . Bioscience Journal [online], vol. 34, no. 5, pp. 1158–1166. [Accessed20 May 2022]. DOI 10.14393/BJ-v34n5a2018-39451. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/39451.

Issue

Section

Agricultural Sciences