Biotechnological tools in guava (Psidium guajava) aiming the resistence to Meloidogyne enterolobii

• Grant number: 13/07094-0
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2013
• End date: December 31, 2015
• Field of knowledge: Agronomical Sciences - Agronomy
• Principal Investigator: Jean Carlos Cardoso
• Grantee: Jean Carlos Cardoso
• Host Institution: Centro de Ciências Agrárias (CCA). Universidade Federal de São Carlos (UFSCAR). Araras , SP, Brazil

Abstract

Guava is an important fruit crop in Brazil. The occurrence of Meloidogyne enterolobii, a polyphagous nematode and an important parasite in different crop species, is actually, the major problem of guava production in Brazil. The breeding programs of this species require achievement of resistant cultivars for this parasite or the achievement of resistant and compatible rootstocks with guava, main because was not reported at moment the presence of resistance to this nematode in guava specie. Some genotypes of yellow and red types of araçá (Psidium cattleyanum) were reported as resistant for this nematode, but this genotypes are not compatible as rootstock with commercial genotypes of guava. In the same way, the attempts of interspecifical controlled crosses between guava and araçá were not resulted in success. In this way, the use of biotechnological tools that aim the achievement of hybrid embryos between this two species can be an alternative for viable and accelerate the M. enterolobii resistance in breeding programs of guava. The aim of this project will be use different biotechnological tools as the controlled crosses with embryos rescue and in vitro cultivation, in vitro pollination and ovary culture and the achievement of self tetraploids in guava as a way to viable the hybrid plants, and also the works of micrografting of guava with araça. The uses of biotechnological tools could result in extension of knowledge about both species, as well as, viable the achievement of hybrids and its utilization as new cultivar, for accelerate conventional breeding of guava or in achievement of resistant and compatible rootstocks between the guava and the hybrids obtained. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FORTUNA MACAN, GIOVANA PRADO; CARDOSO, JEAN CARLOS. In vitro grafting of Psidium guajava in Psidium cattleianum for the Management of the Meloidogyne enterolobii. INTERNATIONAL JOURNAL OF FRUIT SCIENCE, v. 20, n. 1, p. 106-116, JAN 2 2020. (16/07571-1, 13/07094-0)

CARDOSO, JEAN CARLOS; COSTA, BRUNA TEIXEIRA; DE ALMEIDA, EDUARDO JOSE. Pollination and in vitro germination of seeds for interspecific hybridization of Psidium guajava and Psidium cattleianum. EUPHYTICA, v. 213, n. 7, JUL 2017. (13/07094-0)