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Thèse de Doctorat
DOI
10.11606/T.11.2005.tde-02062005-170523
Document
Auteur
Nom complet
Silvia Blumer
Adresse Mail
Unité de l'USP
Domain de Connaissance
Date de Soutenance
Editeur
Piracicaba, 2005
Directeur
Jury
Pompeu Junior, Jorgino (Président)
Bassanezi, Renato Beozzo
Lima, Jose Eduardo Oliveira de
Mourão Filho, Francisco de Assis Alves
Scarpare Filho, João Alexio
Titre en portugais
Citrandarins e outros híbridos de trifoliata como porta-enxertos nanicantes para a laranjeira 'Valência' (Citrus sinensis L. Osbeck).
Mots-clés en portugais
declínio do citros
gomose
melhoramento genético vegetal
poliembrionia vegetal
porta-enxerto
tangerina
tristeza cítrica
Resumé en portugais
Laranjeiras ‘Valência’ enxertadas em citrandarins e outros híbridos de trifoliata foram plantadas em 1988, em Itirapina (SP), num Latossolo Vermelho-amarelo-textura arenosa e conduzidas sem irrigação. Os citrandarins Sunki x English (1.628), Cleópatra x Rubidoux (1.660) e Cleópatra x English (710), induziram as maiores produções de frutos nas cinco e nas treze colheitas. Os citranges ‘Troyer’ e ‘Carrizo’ foram significativamente menos produtivos que o Sunki x English (1.628) nas cinco primeiras e no total das treze colheitas. Os citrandarins Clementina x Trifoliata (1.615), Cleópatra x Swingle, seleções (715) e (1.614), Cleópatra x Rubidoux (1.600) e Cleópatra x Christian (712) induziram plantas nanicas. Sunki x English (1.628), ‘Troyer’ e ‘Carrizo’ proporcionaram as maiores plantas e lideraram a produção de frutos e de sólidos solúveis no período 2001-2003. Nenhuma planta mostrou sintomas de suscetibilidade à tristeza ou ao declínio. As plantas enxertadas no trangpur Cravo x Carrizo (717), mostraram sintoma de incompatibilidade na região de enxertia. "Seedlings" dos citrandarins Cleópatra x Swingle (1.587), Cleópatra x Trifoliata (1.574) e Cleópatra x Rubidoux (1.600) foram mais resistentes à gomose de Phytophthora parasitica que os demais porta-enxertos.
Titre en anglais
Citrandarins and others trifoliate hybrids as rootstocks for ‘Valencia’ sweet orange (Citrus sinensis L. Osbeck) trees.
Mots-clés en anglais
blight
citrus improvement
gummosis
poliembriony rootstocks
tangerine
Resumé en anglais
‘Valência’ sweet orange trees budded onto citrandarins and others trifoliate hybrids rootstocks were planted in 1988 on a sandy textured Oxisol in São Paulo state, Brazil, and managed without irrigation. Tristeza and blight diseases are endemic in the area. Trees on Sunki x English (1628), Cleopatra x Rubidoux (1660) and Cleopatra x English (710), produced the highest cumulative yields in the first five and in the thirteen crops. ‘Carrizo’ and ‘Troyer’ citranges gave the lowest productions in the first five yields but were similar to Sunki x English (1628) in 13-years cumulative yields. Clementine x Trifoliate (1615), Cleopatra x Swingle (715) and (1614) selections, Cleopatra x Rubidoux (1600) and Cleopatra x Christian (712) induced dwarfed trees. Sunki x English (1628) and ‘Troyer’ and ‘Carrizo’ citranges induced the largest trees and fruit and soluble solids production by tree in the 2001-2003 period. None tree showed symptoms of tristeza or declinio. Trees on Cravo x Carrizo (717) showed bud-union-ring symptom of incompatibility. Seedlings of Cleopatra x Swingle (1587), Cleopatra x Trifoliate (1574) and Cleopatra x Rubidoux (1600) were more resistent to Phytophthora parasitica infections than the others rootstocks.
 
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Date de Publication
2005-06-04
 
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