PROLINE OF LEAF APPLICATION ON GROWTH AND PHYSIOLOGY OF GREEN CORN ON SOIL SALINITY DIFFERENT LEVELS

Authors

  • Francisco d de Assis da Silva Universidade Federal de Campina Grande
  • Francisco Hevilasio Freire Pereira UNIVERSIDADE FEDERAL DE CAMPINA GRANDE
  • José Eustáquio Campos Junior ESCOLA SUPERIOR DE AGRICULTURA LUIZ DE QUEIROZ
  • Jackson Silva Nobrega Universidade Federal da Paraíba
  • Mirandy dos Santos Dias Universidade Federal de Campina Grande

Keywords:

amino acid; gas exchange; Zea mays L.

Abstract

Corn (Zea mays L.) is one of the most cultivated crops in the world. In Brazil, this cereal has a wide diversity of use. Most of the areas where maize production is used is irrigation, however, when performed inadequately it becomes preponderant for salinization of soils. The effect of proline foliar application on the growth and physiology of the green maize cultivated in salinized soil was evaluated. The experiment was conducted at the Center for Agro-Food Science and Technology (CCTA), belonging to the Federal University of Campina Grande (UFCG), Pombal, PB, from March  to April 2015, using maize variety AG 1051. The treatments consisted of two levels of soil salinity (EC = 3.26 and 0.86 dS/m) and five concentrations of proline (0, 2.5, 5.0, 7.5 and 10 mmol L -¹) applied by leaf on corn plants. The experimental design was completely randomized, in the 2 x 5 factorial scheme, with four replications. A higher growth and mass accumulation was observed when the plants were conducted in soil of lower salinity (CE = 0.86 dS/m). Transpiration was influenced by salinity and proline concentration. The highest rate of intercellular CO2 concentration (Ci) was obtained at the concentration of 7.5 mmol L-¹ proline. Proline concentrations did not influence the growth and mass accumulation aspects of maize.

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Author Biographies

  • Francisco Hevilasio Freire Pereira, UNIVERSIDADE FEDERAL DE CAMPINA GRANDE

    PROFESSOR DO CURSO DE AGRONOMIA, CCTA/UFCG

     

  • José Eustáquio Campos Junior, ESCOLA SUPERIOR DE AGRICULTURA LUIZ DE QUEIROZ

    ALUNO DO DOUTORADO EM ENGENHARIA AGRÍCOLA/ ESALQ

  • Jackson Silva Nobrega, Universidade Federal da Paraíba

    Aluno do doutorado no programa de pós graduação em Agronomia, CCA/UFPB

  • Mirandy dos Santos Dias, Universidade Federal de Campina Grande

    Aluno de mestrado no programa de Pós Graduação em Engenharia Agrícola

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Published

2020-10-08

How to Cite

PROLINE OF LEAF APPLICATION ON GROWTH AND PHYSIOLOGY OF GREEN CORN ON SOIL SALINITY DIFFERENT LEVELS. (2020). Colloquium Agrariae. ISSN: 1809-8215, 16(5), 23-34. https://journal.unoeste.br/index.php/ca/article/view/3037

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