Resistance gradient of black pod disease in cocoa and selection by leaf disk assay

Santos, Elisa Susilene Lisboa dos; Cerqueira-Silva, Carlos Bernard Moreno; Clément, Didier; Luz, Edna Dora Martins Newman

doi:10.1590/s1984-70332011000400002

Cited by 9 publications

(3 citation statements)

References 19 publications

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“…In addition, many of the progenies did not differ or even surpassed, in average, the controls: 16 crossings were similar and 11 crossings had means higher when compared to those found for the susceptibility controls Catongo and SIC-23 (Table 4). Progenies more susceptible than susceptibility patterns were also observed in other studies (Santos et al, 2011;Bahia et al, 2015;Barreto et al, 2015).…”

Section: Assessment For Black Podsupporting

confidence: 84%

“…The tests with leaf discs suggested by Nyassé et al (1995) has been widely used for the assessment of resistance to cacao diseases (Santos et al, 2011;Bahia et al, 2015;Barreto et al, 2015), showing a high reliability regarding BP behavior in fruits (Pires et al, 1997;Santos et al, 2009). The species P. palmivora was used in resistance tests because it is a common cosmopolitan species in all cocoa producing regions (Luz et al, 2001).…”

Section: Assessment For Black Podmentioning

confidence: 99%

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Association of genes from different sources of resistance to major cacao diseases

2020

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This study aimed to select genotypes resistant to witches' broom (WB) and black pod (BP), major cacao diseases in Brazil, as well as incorporate resistance genes to moniliasis supplemented by clones EET75 and UF273, forming populations of second-cycle recurrent selection. Moniliophthora perniciosa (2 × 10 5 basidiospores/mL) was inoculated on 30-day-old seedlings from 72 different progenies, being assessed 60 days later, and a mixture of four isolates of Phytophthora palmivora (3 × 10 5 zoospores/mL) was inoculated on leaf discs from 58 progenies, observing lesions after seven days. Significant effects of progeny were observed in the tests of resistance to both diseases (p < 0.05). Scavina-6 expressed resistance to both pathogens, 26 crosses did not differ from free-pollinated progenies of Scavina-6 for WB, and ten crosses were higher and 27 similar for BP. Eight crosses were largely resistant to both diseases.

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Section: Assessment For Black Podsupporting

confidence: 84%

Section: Assessment For Black Podmentioning

confidence: 99%

Association of genes from different sources of resistance to major cacao diseases

2020

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“…estimated that 90 % of the known commercial cacao genotypes are susceptible to this disease. In fact, clone CCN51 may be used as a control in tests that involve the evaluation of resistance to black pod rot in cacao genotypes (Lisboa, Cerqueira-Silva, Clement, & Newman, 2011).…”

Section: Discussionmentioning

confidence: 99%

Reaction of detached fruits from selected cocoa clones to artificial inoculation with Phytophthora palmivora

Rodriguez Polanco,

Carrero,

Parra

et al. 2023

Acta Agron.

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Black pod rot (BPR), caused by several species of the genus Phytophthora, is one of the most limiting diseases for the production of cocoa as it appears in all of the producing regions of the world and generates significant losses. The aim of this study was to establish the response to this infection in six cacao clones (EET8, IMC67, TSH565, PA46, ICS95, and CCN51), through an inoculation test on detached fruits using five P. palmivora isolates from five producing regions. The incidence and severity of the disease in the detached pods were evaluated at six and ten days after inoculation (DAI). Clone CCN51 was classified as susceptible, and clones IMC67 and PA46 as moderately susceptible at six DAI. All the clones evaluated were categorized as susceptible at ten DAI. The HURV19 isolates of P. palmivora showed the highest aggressiveness compared to ANYA228, which was found to be the least aggressive.

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Detection of genetic resistance to cocoa black pod disease caused by three Phytophthora species

et al. 2015

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Resistance gradient of black pod disease in cocoa and selection by leaf disk assay

Abstract: ABSTRACT

Cited by 9 publications

References 19 publications

Association of genes from different sources of resistance to major cacao diseases

Association of genes from different sources of resistance to major cacao diseases

Reaction of detached fruits from selected cocoa clones to artificial inoculation with Phytophthora palmivora

Detection of genetic resistance to cocoa black pod disease caused by three Phytophthora species

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