Ciclo precoce de maturação dos frutos e produtividade em genótipos de café derivadas de C1195-5-6-2

Andreazi, Elder; Carducci, Fernando Cesar; Sera, Tumoru; Pereira, Carlos Theodoro Motta; Mariucci, Valdir; Carvalho, Filipe Gimenez; Shigueoka, Luciana Harumi; Santos, W. G. dos; Fonseca, Inês Cristina de Batista; Sera, Gustavo Hiroshi

doi:10.25186/cs.v12i4.1375

Cited by 6 publications

(3 citation statements)

References 10 publications

(12 reference statements)

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“…Genotypes of C. canephora of the botanical variety Robusta Apoatã have been used as an alternative in control of root-knot nematode in the form of rootstock or otherwise. Among them, the cultivar IAC 2258 is recommended for planting in areas infested with the nematodes M. exigua, M. incognita (Kofoid & White) Chitwood and M. paranaensis (Andreazi et al, 2013). In areas infested by the pathogen, results were found in which the mean yield over six crop seasons of nongrafted susceptible genotypes was up to 55% less than the yield of those genotypes grafted onto IAC Apoatã 2258 (Barbosa et al, 2014).…”

Section: Results and Discusssionmentioning

confidence: 92%

Reaction of Coffea canephora clones to the root knot nematode, Meloidogyne incognita

Santos¹,

Rocha²,

Fernandes³

et al. 2017

Afr. J. Agric. Res.

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In the Western Amazon, Brazil, Coffea canephora Pierre is the main species cultivated because it has good adaptation to the climate and soils of the region. Among the factors that limit the yield of this crop, Meloidogyne or root-knot nematode, caused by the root knot nematode, is an aggressive disease present in the state of Rondonia. The aim of this study was to evaluate the reaction of fifteen clones of C. canephora, belonging to the cultivar BRS Ouro Preto, to Meloidogyne incognita (Est I2). Therefore, six seedlings with six months of growth in a nursery from each one of the clones of the cultivar were transferred to pots containing a sterilized substrate in a greenhouse. Following the same design, three clonal genotypes selected from the cultivar IAC Apoatã (C. canephora botanical variety Robusta) served as resistant controls, and seedlings of C. arabica of the Obatã line and tomato (Solanum lycopersicum) cv. Santa Clara (20 days after germination) as susceptible controls, for a total of 120 pots. A 10 ml suspension containing 5000 eggs of M. incognita was inoculated on each plant, and after 150 days, they were evaluated with regards to root fresh weight (FWR), number of galls (NG), number of eggs (NE), and the nematode reproduction factor (RF = final population/initial population). Except for the clone K98M-0061, which exhibited galls (29.17), all the clones of the variety BRS Ouro Preto showed resistance at levels equivalent to those of the controls of the var. Apoatã (RF <1) and good root development. Thus, it can be concluded that the total composition of clones of the variety BRS Ouro Preto is resistant to M. incognita in Rondonia.

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Section: Results and Discusssionmentioning

confidence: 92%

Reaction of Coffea canephora clones to the root knot nematode, Meloidogyne incognita

Santos¹,

Rocha²,

Fernandes³

et al. 2017

Afr. J. Agric. Res.

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“…), and large (>1.2 cm diam.) and adopting the grading scale from 1 to 5 in which 1 is plants with <1% of leaves with small lesions, 2 is plants with 2–4% of leaves with lesions, 3 is plants with 5–19% of leaves with lesions (small, medium, and large), 4 is plants with 20–35% of leaves with lesions (small, medium, and large), and 5 is plants with 36–100% of leaves with lesions (small, medium, and large) (Andreazi et al., 2015).…”

Section: Methodsmentioning

confidence: 99%

Germplasm characterization of half‐sib families from seminal matricies of Coffea canephora

et al. 2022

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The genetic diversity of Coffea canephora Pierre ex A. Froehner present in old seminal crops must be characterized because it represents a source of genetic variability for breeding programs. In this study, the genetic diversity of 388 half-sib families of C. canephora, collected from Espírito Santo, Brazil, were assessed for their phenotypic traits. The data were obtained in a trial planted in April 2018 with five commercial clones as controls. Vegetative development was evaluated based on plant height, stem diameter, and average height and diameter growth rates. Abiotic (drought) and biotic (rust, leaf miner, and mealybug) stresses were evaluated by a rating scale. The phenotypic variability of the population was detected for all traits, and divergent clusters of families were identified. Negative correlations indicated that adverse conditions hampered the early development of the coffee plants. Groups of families should be investigated for breeding programs according to adequate development even under stressful conditions. These results show the importance of preserving the germplasm of old crops in the south of Espírito Santo as a source of genetic resources for coffee breeding programs. This valuable resource should be maintained and conserved as a strategy to guarantee the sustainability of coffee production.

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“…This disease is found in all coffee producing regions and is considered the main crop disease in Brazil and in the world (Zambolim 2016). The majority of Arabica coffee cultivars cultivated in Brazil are coming from Catuaí or Mundo Novo groups (Chalfoun and Reis 2010), which are susceptible to CLR (Andreazi et al 2015). C. arabica cultivars derived from the "Híbrido de Timor" (HdT) and "Icatu", coffee genotypes with Coffea canephora introgression, have different levels of resistance to CLR (Sera et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Assisted selection using molecular markers linked to rust resistance SH3 gene in Coffea arabica

Silva,

Ariyoshi,

Shigueoka

et al. 2023

Crop Breed. Appl. Biotechnol.

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The aim of this work was to validate markers linked to the SH3 gene of coffee leaf rust (CLR) resistance and use them in assisted selection. Initially, we validated the markers in genotypes already known to carry SH3. Next, we performed phenotype and genotype evaluation for resistance to CLR in coffee plants growing under field conditions. We used Arabica coffee progenies derived from BA-10, which carries the SH3 gene due to introgression of C. liberica. Three SCAR markers (SP-M16-SH3, BA-48-21O-f, and BA-124-12K-f) and one SSR marker (Sat244) linked to SH3 gene were used to amplify the coffee plants' DNA. Our assessments of markers validation in resistant genotypes, SP-M16-SH3 and BA-124-12K-f, were efficient to identify the SH3 gene. These two markers were used to evaluate the progenies derived from BA-10 and were significantly linked to the phenotype evaluations. The SP-M16-SH3 marker was more efficient, with the advantage of being codominant.

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Ciclo precoce de maturação dos frutos e produtividade em genótipos de café derivadas de C1195-5-6-2

Cited by 6 publications

References 10 publications

Reaction of Coffea canephora clones to the root knot nematode, Meloidogyne incognita

Reaction of Coffea canephora clones to the root knot nematode, Meloidogyne incognita

Germplasm characterization of half‐sib families from seminal matricies of Coffea canephora

Assisted selection using molecular markers linked to rust resistance SH3 gene in Coffea arabica

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