Extracts of Caesalpinia ferrea and Trichoderma sp. on the control of Colletotrichum sp. transmission in Sideroxylon obtusifolium seeds

P.A.F.R Melo,C.C Martins,C.P Vieira,A.P Anjos Neto,L.C Nascimento,L.R Araújo,E.U Alves,K.M.S Pinto

doi:10.1590/1983-084x/15_191

P.A.F.R Melo, C.C Martins + Show 6 more

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https://doi.org/10.1590/1983-084x/15_191

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Abstract

ABSTRACT Recent research reports the importance of preserving plants in Brazilian semiarid regions, in this context, the scientific literature has reported different pharmacological studies from plant extracts with an antifungal potential, coming from forest species that can contribute as a control and management strategy in the transmission of phytopathogens. This study aimed to evaluate the effect of biotech treatments in controlling the transmission of Colletotrichum sp. in seeds of S. obtusifolium. In this study, 100 seeds were subjected to the following preventive treatments: fungicide Captan®, extract of Caesalpinia ferrea Mart. Ex. Tul., and biological control with Trichoderma spp. The biological control with Trichoderma spp. and the alternative control using C. ferrea extract provided a greater protection to seeds and seedlings of S. obtusifolium facing the transmissibility of Colletotrichum sp.The treatment based on plant extract is more efficient for this purpose only in large seeds and does not interfere on the germination percentage and speed. Therefore it is necessary to perform other studies with Trichoderma spp. and C. ferrea extract to test different doses of these products.

Highlights

Sideroxylon obtusifolium (Roem & Schult.)Penn. is a specie of the caatinga biome that because of intense use, it is at risk of local extinction in the Northeast of Brazil (Silva & Dantas, 2013)
Taking into consideration the great potential of using S. obtusifolium in reforestation, ecology and pharmaceutical industry (Oliveira et al, 2012), the present study aimed to evaluate the effect of biotechnological treatments in controlling transmission of Colletotrichum sp. in seeds of Sideroxylon obtusifolium (Roem & Schul.) Penn
Obtusifolium seeds which were harvested from fully mature fruits from six mother tree that were located in Boa Vista, PB, in the first half of February 2013

Summary

Introduction

Sideroxylon obtusifolium (Roem & Schult.)Penn. is a specie of the caatinga biome that because of intense use, it is at risk of local extinction in the Northeast of Brazil (Silva & Dantas, 2013). Is a specie of the caatinga biome that because of intense use, it is at risk of local extinction in the Northeast of Brazil (Silva & Dantas, 2013). This way, the establishment of forest recovery programs through the production of seedlings from seeds quality and genetic variability is essential (Beltrão et al, 2008). In this context, the sanity and physiological quality of seeds becomes important once the production of seedlings from them will reflect on their ability to develop healthy plants (Mondego et al, 2014)

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