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| GIAMPANI,JOSÉ SEGUNDO; TAZIMA,ZULEIDE HISSANO; BABA,VIVIANE YUMI; YADA,INÊS FUMIKO UBUKATA; LEITE JÚNIOR,RUI PEREIRA. |
| ABSTRACT ‘Pêra’ sweet orange is the most important citrus cultivar in Brazil, but it is highly susceptible to Citrus tristeza virus (CTV), the causal agent of citrus tristeza disease. In this study, we evaluated the severity of citrus tristeza disease and its relation with the agronomic performance of seven cultivars and six selections of ‘Pêra’ sweet orange under field conditions in the North and Northwest regions of the State of Paraná, Brazil. The citrus tristeza disease severity was determined based on symptoms of stem pitting. The vegetative growth assessed in trees of all four locations for the 2012 season, and in two field plots for the 2011, 2012 and 2013 harvests, respectively. The cultivar ‘IPR 153’ (Bianchi) had the best performance concerning... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis; Stem pitting; Yield; Vegetative growth; Citrus tristeza virus. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000300403 |
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| BACAR,ELÍDIO LILIANO CARLOS; NEVES,CARMEN SILVIA VIEIRA JANEIRO; LEITE JUNIOR,RUI PEREIRA; YADA,INÊS FUMIKO UBUKATA; TAZIMA,ZULEIDE HISSANO. |
| ABSTRACT Low genetic diversity of citrus scion and rootstock cultivars makes the crop more vulnerable to diseases and pests. The objective of this study was to evaluate the performance of ‘Jaffa’ sweet orange grafted onto five rootstocks over six harvests in subtropical conditions in the north of Paraná state, Brazil. The experiment used a randomized block design, with six replications and two trees per plot, spaced at 7.0 m x 4.0 m. The rootstocks were: ‘Rangpur’ lime, ‘Cleopatra’ and ‘Sunki’ mandarins, ‘Fepagro C-13’ citrange, and ‘Swingle’ citrumelo. The variables evaluated were vigor, yield, and yield efficiency of the trees as well as the physical and chemical characteristics of the fruits. Data were subjected to analysis of variance, complemented by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus sinensis; Agronomic characteristics; Fruit quality; Fruit yield. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000500701 |
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