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2021
Ribeiro, Lucas Oliveira; Costa, Danilo Pereira; Ledo, Carlos Alberto Silva; Carvalho, Luciana Marques; Carvalho, Hélio Wilson Lemos; Filho, Walter Dos Santos Soares; Girardi, Eduardo Augusto
‘Tropical Sunki’ mandarin and hybrid citrus rootstocks under ‘Pera’ sweet orange in cohesive soil and As climate without irrigation Journal Article
In: Bragantia, vol. 80, pp. 1-14, 2021, ISSN: 0006-8705.
Abstract | Links | BibTeX | Tags: Citrus ×sinensis, Plant breeding, Poncirus trifoliata, rainfed cultivation, selection index
@article{Ribeiro2021,
title = {‘Tropical Sunki’ mandarin and hybrid citrus rootstocks under ‘Pera’ sweet orange in cohesive soil and As climate without irrigation},
author = {Lucas Oliveira Ribeiro and Danilo Pereira Costa and Carlos Alberto Silva Ledo and Luciana Marques Carvalho and Hélio Wilson Lemos Carvalho and Walter Dos Santos Soares Filho and Eduardo Augusto Girardi},
url = {http://www.scielo.br/j/brag/a/HMyzwL8xx5PLGJfhdXkGhxM/?lang=en},
doi = {10.1590/1678-4499.20200407},
issn = {0006-8705},
year = {2021},
date = {2021-01-01},
journal = {Bragantia},
volume = {80},
pages = {1-14},
publisher = {Instituto Agronômico de Campinas},
abstract = {ABSTRACT The search for alternative rootstocks to the ‘Rangpur’ lime tree is a challenge to the sustainability of citrus in the Tabuleiros Costeiros (Coastal Tablelands) of Northeastern Brazil. New varieties should meet high drought tolerance with water deficit, cohesive soils, resistance to citrus diseases and inducing high production of fruit. In this work, the performance of ‘Pera’ sweet orange was evaluated on ‘Tropical Sunki’ mandarin and 27 hybrid citrus rootstocks in Umbaúba, Sergipe. A local selection of the ‘Rangpur’ lime was the control. Planting was in 2013 at tree spacing of 6.0 × 3.0 m, without irrigation. Tree size, fruit yield and quality, tree survival rate and graft-compatibility were assessed until 2019. Experimental design was completely randomized blocks with 29 treatments, three replicates and four plants in the plot. Two selection indices were applied to the data to assist in decision making. The ‘Tropical Sunki’ mandarin induced similar cumulative fruit yield in relation to the ‘Rangpur’ lime, suggesting a good drought tolerance of the former rootstock. The TSKC × (LCR × TR) - 073 induced slightly lower productivity, compensated by higher productive efficiency and higher concentration of soluble solids, whereas LCR × TR - 001 and HTR - 166 were highly efficient dwarfing rootstocks. The multiplicative and the rank sum indices showed high correlation, both classifying ‘Tropical Sunki’ mandarin, ‘Santa Cruz Rangpur’ lime, LVK × LCR - 010 and - 038, HTR - 127, in addition to the three aforementioned hybrids, as superior to the local selection of ‘Rangpur’ lime.},
keywords = {Citrus ×sinensis, Plant breeding, Poncirus trifoliata, rainfed cultivation, selection index},
pubstate = {published},
tppubtype = {article}
}
ABSTRACT The search for alternative rootstocks to the ‘Rangpur’ lime tree is a challenge to the sustainability of citrus in the Tabuleiros Costeiros (Coastal Tablelands) of Northeastern Brazil. New varieties should meet high drought tolerance with water deficit, cohesive soils, resistance to citrus diseases and inducing high production of fruit. In this work, the performance of ‘Pera’ sweet orange was evaluated on ‘Tropical Sunki’ mandarin and 27 hybrid citrus rootstocks in Umbaúba, Sergipe. A local selection of the ‘Rangpur’ lime was the control. Planting was in 2013 at tree spacing of 6.0 × 3.0 m, without irrigation. Tree size, fruit yield and quality, tree survival rate and graft-compatibility were assessed until 2019. Experimental design was completely randomized blocks with 29 treatments, three replicates and four plants in the plot. Two selection indices were applied to the data to assist in decision making. The ‘Tropical Sunki’ mandarin induced similar cumulative fruit yield in relation to the ‘Rangpur’ lime, suggesting a good drought tolerance of the former rootstock. The TSKC × (LCR × TR) - 073 induced slightly lower productivity, compensated by higher productive efficiency and higher concentration of soluble solids, whereas LCR × TR - 001 and HTR - 166 were highly efficient dwarfing rootstocks. The multiplicative and the rank sum indices showed high correlation, both classifying ‘Tropical Sunki’ mandarin, ‘Santa Cruz Rangpur’ lime, LVK × LCR - 010 and - 038, HTR - 127, in addition to the three aforementioned hybrids, as superior to the local selection of ‘Rangpur’ lime.
2020
Costa, Danilo Pereira; Ribeiro, Lucas Oliveira; Filho, Maurício Antônio Coelho; Ledo, Carlos Alberto Silva; Stuchi, Eduardo Sanches; Girardi, Eduardo Augusto; Gesteira, Abelmon Silva; Filho, Walter Santos Soares
Nonparametric indices for the selection of hybrid citrus as rootstocks grafted with 'Valência' sweet Orange Journal Article
In: Pesquisa Agropecuária Brasileira, vol. 55, pp. 1-12, 2020, ISSN: 0100-204X.
Abstract | Links | BibTeX | Tags: breeding, Citrus, genetic variability, Poncirus trifoliata, selection index
@article{Costa2020,
title = {Nonparametric indices for the selection of hybrid citrus as rootstocks grafted with 'Valência' sweet Orange},
author = {Danilo Pereira Costa and Lucas Oliveira Ribeiro and Maurício Antônio Coelho Filho and Carlos Alberto Silva Ledo and Eduardo Sanches Stuchi and Eduardo Augusto Girardi and Abelmon Silva Gesteira and Walter Santos Soares Filho},
url = {http://www.scielo.br/j/pab/a/N4W8RJ8st5LrksGv3h9WMWD/?lang=en},
doi = {10.1590/S1678-3921.PAB2020.V55.01592},
issn = {0100-204X},
year = {2020},
date = {2020-01-01},
journal = {Pesquisa Agropecuária Brasileira},
volume = {55},
pages = {1-12},
publisher = {Embrapa Secretaria de Pesquisa e Desenvolvimento, Pesquisa Agropecuária Brasileira},
abstract = {Abstract: The objective of this work was to evaluate five nonparametric selection indices for the selection of hybrid citrus rootstocks grafted with 'Valência' sweet orange, using horticultural traits relevant for the juice processing industry. Forty-six rootstocks were evaluated in a randomized complete block design, with three replicates and five trees in the plot, in the period from 2009-2015, in a rainfed cultivation. The means of the variables plant height, accumulated fruit yield, fruit yield efficiency, total soluble solids concentration, juice yield, and drought-tolerance were used to calculate the following indices: multiplicative index (IEi), sum of classification (IMMi), genotype-ideotype distance (DiI), and ranking indices (IRKi, based on simple means; and IRKii, based on linear normalization). The indices were efficient to classify the hybrids in relation to general performance. Spearman’s correlation showed a high similarity between most nonparametric indices, notably between IRKi and IRKii. The ranking indices, mainly IRKii, provide a more coherent classification of the hybrids, which allows of the selection of more productive and drought-tolerant rootstocks to produce high-quality fruit for processing.},
keywords = {breeding, Citrus, genetic variability, Poncirus trifoliata, selection index},
pubstate = {published},
tppubtype = {article}
}
Abstract: The objective of this work was to evaluate five nonparametric selection indices for the selection of hybrid citrus rootstocks grafted with 'Valência' sweet orange, using horticultural traits relevant for the juice processing industry. Forty-six rootstocks were evaluated in a randomized complete block design, with three replicates and five trees in the plot, in the period from 2009-2015, in a rainfed cultivation. The means of the variables plant height, accumulated fruit yield, fruit yield efficiency, total soluble solids concentration, juice yield, and drought-tolerance were used to calculate the following indices: multiplicative index (IEi), sum of classification (IMMi), genotype-ideotype distance (DiI), and ranking indices (IRKi, based on simple means; and IRKii, based on linear normalization). The indices were efficient to classify the hybrids in relation to general performance. Spearman’s correlation showed a high similarity between most nonparametric indices, notably between IRKi and IRKii. The ranking indices, mainly IRKii, provide a more coherent classification of the hybrids, which allows of the selection of more productive and drought-tolerant rootstocks to produce high-quality fruit for processing.