African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6180

Full Length Research Paper

Physiological potential of lettuce seeds crespa

Wesley Oliveira de Assis
  • Wesley Oliveira de Assis
  • Production Department, Federal University of Alagoas, Crop BR 104/Norte - Km 85, Rio Largo, Alagoas, Brazil.
  • Google Scholar
Joao Luciano de Andrade Melo Junior
  • Joao Luciano de Andrade Melo Junior
  • Propagation of Plants Department, Federal University of Alagoas BR 104/Norte - Km 85, Rio Largo, Alagoas, Brazil.
  • Google Scholar
Luan Danilo Ferreira de Andrade Melo
  • Luan Danilo Ferreira de Andrade Melo
  • Propagation of Plants Department, Federal University of Alagoas BR 104/Norte - Km 85, Rio Largo, Alagoas, Brazil.
  • Google Scholar
Reinaldo de Alencar Paes
  • Reinaldo de Alencar Paes
  • Production Department, Federal University of Alagoas, Crop BR 104/Norte - Km 85, Rio Largo, Alagoas, Brazil.
  • Google Scholar
Joao Correia de Araújo Neto
  • Joao Correia de Araújo Neto
  • Propagation of Plants Department, Federal University of Alagoas BR 104/Norte - Km 85, Rio Largo, Alagoas, Brazil.
  • Google Scholar
Lucas dos Santos Medeiros
  • Lucas dos Santos Medeiros
  • Production Department, Federal University of Alagoas, Crop BR 104/Norte - Km 85, Rio Largo, Alagoas, Brazil.
  • Google Scholar
Larice Bruna Ferreira Soares
  • Larice Bruna Ferreira Soares
  • Department of Veterinary Medicine, Federal Rural University of Pernambuco, Brazil.
  • Google Scholar
Rayanne Thalita de Almeida Souza
  • Rayanne Thalita de Almeida Souza
  • Department of Zootechnics, Federal Rural University of Pernambuco, Brazil.
  • Google Scholar
Sara Camylla de Moura Assis
  • Sara Camylla de Moura Assis
  • Production Department, Federal University of Alagoas, Crop BR 104/Norte - Km 85, Rio Largo, Alagoas, Brazil.
  • Google Scholar
Lívia Francyne Gomes Chaves
  • Lívia Francyne Gomes Chaves
  • Propagation of Plants Department, Federal University of Alagoas BR 104/Norte - Km 85, Rio Largo, Alagoas, Brazil.
  • Google Scholar
Ana Caroline de Melo Morais
  • Ana Caroline de Melo Morais
  • Production Department, Federal University of Alagoas, Crop BR 104/Norte - Km 85, Rio Largo, Alagoas, Brazil.
  • Google Scholar
Jose Jairo Florentino Cordeiro Junior
  • Jose Jairo Florentino Cordeiro Junior
  • Department of Agronomy, Federal University of Sergipe, Brazil.
  • Google Scholar


  •  Received: 02 May 2019
  •  Accepted: 25 June 2019
  •  Published: 25 July 2019

Abstract

The present work aimed to evaluate the germination, emergence, vigor and initial development of lettuce (Lactuca sativa L.) cultivars. Nine cultivars belonging to the crespa group, Cinderella, Monica SF 31, Mimosa (Salad Bowl), Veneranda, Brava, Cerbiatta (Catalonha), Itapua Super, Itaúna Prisée, Simpson and Vitória de Verão were used. The experiment was conducted to ensure the accuracy of the comparisons. The variables analyzed were: Germination, emergence, first germination and emergency counting, mean germination and emergency time, mean germination and emergence velocity, germination and emergency uncertainty index, germination and emergency synchrony, and relative frequency of germination and emergency. In order to obtain the emergency data, it was necessary to use a refrigerated room to give optimal conditions for the seeds and in the initial stage, an acclimatization for a salable development of newly emerged seedlings. For experimental design, completely randomized (CRD) was used for laboratory conditions and randomized blocks (RB) for the field, with four replicates of 25 seeds per treatment. The data were submitted for analysis of variance (ANOVA) and the means were compared by the Tukey test at 5% probability. The analyses were carried out using SISVAR software 5.6. Cultivar Itaúna obtained the best results in physiological quality evaluations, being recommended for planting in regions of Northeastern Brazil.

Key words: Lactuca sativa L., germination, emergence.