INFLUENCE OF SOIL AND SUBSTRATES ON SCLEROTIUM PRODUCTION IN THE CARPOGENIC GERMINATION OF Sclerotinia sclerotiorum

Authors

  • Gesimária Ribeiro Costa
  • Jefferson Luis da Silva Costa

Keywords:

Supressiveness, conduciveness, Phaseolus vulgaris

Abstract

In order to select the best substratum for production of sclerotia and a soil for carpogenic germination, two substrata, rice husks and carrots, and two samples of a Dark Red Latossol with contrasting histories – cropped soil with bean under central pivot irrigation, and uncropped soil – were used. Both substrata were efficient for sclerotia production. However, sclerotia produced on rice husks formed larger numbers of apothecia when buried in soil. Soil history affected the carpogenic germination of sclerotia significantly. The uncropped soil showed suppressive characteristics, indicated by a delay in the appearance of the stipes, slow apothecia formation, and smaller number of stipes and apothecia formed, as related to the cropped soil.

KEY-WORDS: Supressiveness; conduciveness; Phaseolus vulgaris.

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Author Biography

Gesimária Ribeiro Costa

Instituto de Ciências Biológicas, Departamento de Fitopatologia, Universidade de Brasília. Campus Universitário Darcy Ribeiro.
Caixa Postal 4457, CEP 70910-900, Brasília, DF. E-mail: gcosta@unb.br

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Published

2007-10-26

How to Cite

COSTA, G. R.; COSTA, J. L. da S. INFLUENCE OF SOIL AND SUBSTRATES ON SCLEROTIUM PRODUCTION IN THE CARPOGENIC GERMINATION OF Sclerotinia sclerotiorum. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 36, n. 2, p. 81–87, 2007. Disponível em: https://revistas.ufg.br/pat/article/view/2130. Acesso em: 17 may. 2024.

Issue

v. 36, n. 2, May/Aug. 2006

Section

Research Article

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