Data/hora: 22/06/2024 00:33:28

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Tipo da produção científica: | Resumo em Anais de Congresso
Data corrente: | 27/03/2008
Data da última atualização: | 04/04/2008
Autoria: | CANTUARIAS-AVILÉS, T.; STUCHI, E. S.; MOURÃO FILHO, F. A. A.; SILVA, S. R.
Afiliação: | T. Cantuarias-Avilés, ESALQ; Eduardo Sanches Stuchi, CNPMF; F. A. A. Mourão Filho, ESALQ; S. R. Silva, EECB.
Título: | Twelve rootstocks effects on the intensity of citrus variagated chlorosis (CVC) in 'Folha Murcha' sweet orange in Bebedouro, SP, Brazil.
Ano de publicação: | 2007
Fonte/Imprenta: | In: CONFERENCE OF THE INTERNATIONAL ORGANIZATION OF CITRUS VIROLOGISTS, 17., 2007, Adana. Program [and] abstracts... Adana: IOCV, 2007. p. 88.
Idioma: | Inglês
Conteúdo: | In a study conducted in a 'Folha Murcha' sweet orange grove, located at Bebedouro, in the State of São Paulo, Brazil, 12 rootstocks have been evaluated on their influence on yield and CVC intensity. The experiment orchard was planted in 2001, at 7x4 m spacing, according to a randomized block design, with five replications and two trees per plot. The 12 rootstocks (treatments) were as folows: 'Carrizo' citrange; the hybrids Rangpur lime x 'Swingle' citrumelo and 'Changsha' x 'English Small'; the 'Sunki' and 'Sun Shu Sha Kat' madarines; 'Limeira' and 'FCAV' ragpur limes; 'Swingle' citrumelo; 'Orlando' tangelo and the trifoliate oranges 'Rubidoux', 'FCAV' and 'Flying dragon'. No supplementary irrigation nor chemical control of vectors were applied. In 2006 and 2007, the CVC severity was evaluated by visual observation of the symptoms in the trees' canopy, using a 1-4 rating scale. Yield was evaluated by weighing all the fruits. Yield data collected in 2006 were plotted against the CVC notes. Although no significant differences were found among the treatments, an evident increase of CVC's severity was observed for all the rootstocks in time. Nevertheless, 'Flying Dragon', 'Changsha' x 'English Small' and 'FCAV' trifoliate oranges showed the lowest increment on CVC's severity between both years. Highest yields were recorded on trees showing mild CVC symptoms, while a clear reduction on yield was observed on trees with stronger CVC symptoms. The evaluation of CVC intensity must continue and further research is necessary to clarify the rootstock effect on symptoms appearance and on yield.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (24550-1) - UPC - SP - -- - S12708 -  - 12708 - DIS