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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.
2018
Brito, Marcos E. B.; Soares, Lauriane A. A.; Filho, Walter S. Soares; Fernandes, Pedro D.; Silva, Elaine C. B.; Sá, Francisco V. S.; Silva, Luderlândio A.
Emergence and morphophysiology of Sunki mandarin and other citrus genotypes seedlings under saline stress Journal Article
In: Spanish Journal of Agricultural Research, vol. 16, iss. 1, pp. e0801-e0801, 2018, ISSN: 2171-9292.
Abstract | Links | BibTeX | Tags: agriculture, breeding, Citrus spp., diseases, economics, fertilization, genetic resources, genetics, growth, irrigation, livestock, pests, photosynthesis, physiology, reproduction, rootstock, Salinity, soils, water manage, weeds
@article{Brito2018,
title = {Emergence and morphophysiology of Sunki mandarin and other citrus genotypes seedlings under saline stress},
author = {Marcos E. B. Brito and Lauriane A. A. Soares and Walter S. Soares Filho and Pedro D. Fernandes and Elaine C. B. Silva and Francisco V. S. Sá and Luderlândio A. Silva},
url = {https://revistas.inia.es/index.php/sjar/article/view/9400/3932 https://revistas.inia.es/index.php/sjar/article/view/9400},
doi = {10.5424/SJAR/2018161-9400},
issn = {2171-9292},
year = {2018},
date = {2018-01-01},
journal = {Spanish Journal of Agricultural Research},
volume = {16},
issue = {1},
pages = {e0801-e0801},
publisher = {Ministerio de Agricultura Pesca y Alimentacion},
abstract = {The scarcity of good quality water is a limiting factor for irrigated agriculture, especially in arid and semiarid regions, where water sources generally contain high concentrations of ions. In such conditions, it is essential to cultivate genotypes with economic potential and tolerance to salinity. Considering the importance of citrus and the need to identify genetic materials that adapt to saline stress, this study evaluates the salinity tolerance of 10 genotypes with rootstock potential. For the irrigation water, five levels of electrical conductivity (ECw: 0.8, 1.6, 2.4, 3.2 and 4.0 dS/m at 25 °C) were used in a randomized block design with three replications, and seed germination and growth variables, as well as physiological plant parameters, were evaluated. The germination rate of the hybrid TSKC × CTARG – 019 was the best under salt conditions, as it was the genotype with the highest tolerance to salinity in the germination stage. Salinity reduced the growth of the citrus genotypes, with the possibility of using water with EC of up to 1.6 dS/m in the rootstock formation stage. Salt stress affected the photosynthetic rate of the genotypes ‘San Diego’ citrandarin and TSKC × CTSW – 018 by reducing the stomatal conductance, restricting the diffusion of CO2 into the substomatal camera. The genotypes TSKC × CTARG – 019, TSKC × CTTR – 012 and TSKC × TRBK – 007 have the greatest potential for growth and photosynthetic apparatus efficiency when subjected to salinity.},
keywords = {agriculture, breeding, Citrus spp., diseases, economics, fertilization, genetic resources, genetics, growth, irrigation, livestock, pests, photosynthesis, physiology, reproduction, rootstock, Salinity, soils, water manage, weeds},
pubstate = {published},
tppubtype = {article}
}
The scarcity of good quality water is a limiting factor for irrigated agriculture, especially in arid and semiarid regions, where water sources generally contain high concentrations of ions. In such conditions, it is essential to cultivate genotypes with economic potential and tolerance to salinity. Considering the importance of citrus and the need to identify genetic materials that adapt to saline stress, this study evaluates the salinity tolerance of 10 genotypes with rootstock potential. For the irrigation water, five levels of electrical conductivity (ECw: 0.8, 1.6, 2.4, 3.2 and 4.0 dS/m at 25 °C) were used in a randomized block design with three replications, and seed germination and growth variables, as well as physiological plant parameters, were evaluated. The germination rate of the hybrid TSKC × CTARG – 019 was the best under salt conditions, as it was the genotype with the highest tolerance to salinity in the germination stage. Salinity reduced the growth of the citrus genotypes, with the possibility of using water with EC of up to 1.6 dS/m in the rootstock formation stage. Salt stress affected the photosynthetic rate of the genotypes ‘San Diego’ citrandarin and TSKC × CTSW – 018 by reducing the stomatal conductance, restricting the diffusion of CO2 into the substomatal camera. The genotypes TSKC × CTARG – 019, TSKC × CTTR – 012 and TSKC × TRBK – 007 have the greatest potential for growth and photosynthetic apparatus efficiency when subjected to salinity.