Germination of seeds of Caatinga native tree species at different temperatures

Authors

  • GILMARA M OLIVEIRA
  • LAISE G BARBOSA
  • JANETE R MATIAS
  • JOSE E.S.B. SILVA
  • RENATA C RIBEIRO
  • BÁRBARA FRANÇA DANTAS Embrapa Semiárido

Keywords:

orest, germination, semiarid

Abstract

Native tree species of the Caatinga of northeastern Brazil  have great economic importance due to their multiple uses, such as for the production of honey , fodder , timber, energy, ornamental and herbal products , resulting in serious problems for the most used species To obtain information about the seed behavior of native tree species of the Caatinga at different temperatures , this study was conducted at Embrapa Semiarid , Petrolina , Pernambuco , Brazil . Seeds Sideroxylon obtusifolium (Roem & Schult. ) Myracrodruon urundeuva (Fr. All.), Amburana cearensis (All.) and Schinopsis brasiliensis ( Engel. ) germinated on paper rolls at 20, 25, 30and 35°C in a completely randomized design with 5 replications of 10 seeds for S. obtusifolium , S. brasiliensis and A. cearensis and five replicates of 50 seeds of M. urundeuva . Germination was evaluated every 2 days, obtaining the germination curve, final germination ( % ) and germination speed index(GSI). Seeds of S. obtusifolium and M. urundeuva had higher germination percentage and speed at 20°C. Seeds of S. brasiliensis had higher germination, by about 50 %, at 25 and 30°C and higher GSI at 30°C. Among the seeds of A. cearensis the highest germination (96 %) was observed at 30°C, however, the GSI was higher at 35°C. These results indicate that each species has specific optimum temperature for the germination process.

Author Biography

BÁRBARA FRANÇA DANTAS, Embrapa Semiárido

Pesquisadora - Embrapa Semiárido Supervisora e RT do Laboratório de Análise de Sementes-LASESA Coordenadora da Rede de Sementes Florestais da Caatinga

Published

2014-04-25

How to Cite

OLIVEIRA, G. M., BARBOSA, L. G., MATIAS, J. R., SILVA, J. E., RIBEIRO, R. C., & DANTAS, B. F. (2014). Germination of seeds of Caatinga native tree species at different temperatures. Scientia Plena, 10(4(a). Retrieved from https://scientiaplena.emnuvens.com.br/sp/article/view/1790

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