Evaluation of somatic hibrids and transgenic plants of Citrus spp. for disease res...
| Grant number: | 99/12594-3 |
| Support type: | Research Projects - Thematic Grants |
| Duration: | February 01, 2001 - April 30, 2006 |
| Field of knowledge: | Agronomical Sciences - Agronomy |
| Principal Investigator: | Sérgio Alves de Carvalho |
| Grantee: | Sérgio Alves de Carvalho |
| Home Institution: | Instituto Agronômico (IAC). Agência Paulista de Tecnologia dos Agronegócios (APTA). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). Campinas , SP, Brazil |
Abstract
Involving the participation of researchers from different institutions from São Paulo State, as Centro de Citricultura Sylvio Moreira/IAC, Instituto Biológico and Fundecitrus, the purpose of this project composed of three sub-projects is to evaluate the varietal resistance to citrus canker in citrus germoplasm of commercial interest; the development of a rapid evaluation system for patogenicity in controlled environmental conditions; and the development of a genetic transformation system for introduction of horizontal resistance to the bacteria. In the first subproject, the evaluation of resistance or tolerance to Xanthomonas axonopodis pv. citri which causes the canker A of crescent occurrence in citric orchards in São Paulo State, will be carried out in greenhouse and experimental field, at the Estação de Pesquisas Biológicas de Presidente Prudente/Instituto Biológico, where studies about this disease have been conducted for several decades. In an orchard with plants spacing 7,0 x 3,5 m, using the Rangpur Lime as rootstock, 175 varieties of sweet orange and 117 mandarins and hybrids from Active Germoplasm Bank of Centro de Citricultura Sylvio Moreira/IAC, will be evaluated. The experiment will be carried out in random blocks, with two repetitions, with 5 plants per variety per repetition and one plant per plot. The Baianinha sweet orange variety Mil be used as natural source of contamination... (AU)