Caffeine inheritance in interspecific hybrids of Coffea arabica x Coffea canephora (Gentianales, Rubiaceae)

Priolli, Regina Helena Geribello; Mazzafera, Paulo; Siqueira, Walter José; Möller, Milene; Zucchi, Maria Imaculada; Ramos, Leonardo; Gallo, Paulo Boller; Colombo, Carlos Augusto

doi:10.1590/s1415-47572008000300017

Cited by 10 publications

(13 citation statements)

References 18 publications

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“…Subsequently, intraspecific hybrids of C. canephora were also used to evaluate genetic parameters of several biochemical compounds [105] and besides the conclusion that for most of the characters additive genetic effects were preponderant, it was also observed that the narrow-sense heritability was high (0.80) for caffeine content. Recently, caffeine inheritance was investigated in F 2 and BC 1 F 1 generations between C. arabica X C. canephora 4x [129]. The analysis of seeds and leaves during two subsequent years showed that in seeds caffeine was controlled by genes with additive effects and broad sense heritability was high.…”

Section: Rare But 'Refractory Caffeine' Turns Decaffito Into Exclusivmentioning

confidence: 99%

Decaf and the Steeplechase Towards Decaffito—the Coffee from Caffeine-Free Arabica Plants

Mazzafera

Baumann²,

Shimizu

et al. 2009

Tropical Plant Biol.

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Unquestionably, the popularity of the coffee beverage relies on its alerting attribute caffeine. However, susceptibilities to this purine alkaloid, quite frequently associated with health concerns, encouraged a significant market for decaffeinated coffee. The beans of Coffea arabica render the best beverage and a decaffeinated coffee has to preserve the desired organoleptic characteristics of this species. Consequently, besides technical removal of caffeine, the endeavors to attain a decaffeinated Arabica coffee range from traditional studies on genetic variability to advanced techniques to produce genetic modified coffee. The aim of this review is to recover part of this subject focusing mainly on the natural genetic variation for caffeine content in Arabica. We also present historical information about caffeine discovery and briefly discuss molecular approaches to reduce caffeine. We introduce here the term decaffito for coffee derived from Arabica plants with beans naturally low in or almost devoid of caffeine. In the near future, coffee drinkers avoiding caffeine will have the choice between basically three Arabica coffees, namely decaffeinated by (a) selection and breeding, (b) genetic modification and (c) industrial extraction. Although only the last decaf coffee is available for the consumers, we believe that the size of the market of each type will occupy in the future depend on the price and health aspects related to the way the decaffeinated coffee beans are obtained.

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Section: Rare But 'Refractory Caffeine' Turns Decaffito Into Exclusivmentioning

confidence: 99%

Decaf and the Steeplechase Towards Decaffito—the Coffee from Caffeine-Free Arabica Plants

Mazzafera

Baumann²,

Shimizu

et al. 2009

Tropical Plant Biol.

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“…Entretanto, até o momento os genótipos desenvolvidos possuem baixa produtividade ou mesmo qualidade de grãos inadequada para um mercado consumidor cada vez mais exigente (NAGAI et al, 2008;PRIOLLI et al, 2008;SILVAROLLA et al, 2004).…”

Section: Introductionunclassified

Avaliação do teor de cafeína em folhas e grãos de acessos de café arábica

Teixeira¹,

Prado²,

Dias³

et al. 2012

Rev. Ciênc. Agron.

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Resumo -O presente trabalho teve como objetivo identificar, dentro do banco de germoplasma do estado de Minas Gerais, acessos de Coffea arabica L. com baixos teores de cafeína e verificar a existência de correlação entre o teor de cafeína dos grãos e de folhas ainda no estádio de mudas, viabilizando a prática da seleção precoce. Foram utilizados 75 acessos de café (cultivares, híbridos e alguns genótipos selvagens) oriundos do banco de germoplasma de café do Estado de Minas Gerais. Para estudo da correlação foram utilizados oito cultivares no delineamento de blocos casualizados com três repetições. Avaliaram-se os teores de cafeína presentes nos grãos e no terceiro e quarto par de folhas verdadeiras. Seis acessos apresentaram teores de cafeína nos grãos menores que 0,88%. Correlações significativas para teor de cafeína foram observadas entre o terceiro (0,69) e quarto par de folhas (0,92) e os grãos. Foram identificados acessos com teores reduzidos de cafeína e boa produtividade de grãos, podendo ser utilizados como genitores em programas de melhoramento. Verificou-se que é possível realizar a seleção precoce para teor de cafeína, em plantas de cafeeiro ainda no estádio de mudas, por meio da avaliação do quarto par de folhas. Palavras-chave -Coffea arabica L. Melhoramento genético. Correlação fenotípica. Seleção precoce.Abstract -The aim of this study was to identify, within the germplasm bank of the Minas Gerais state, Coffea arabica L. accessions with low levels of caffeine and check the correlation between grain and leaves in seedling stage, making possible the practice of early selection. Seventy-five coffe accessions (cultivars, hybrids and several wild genotypes) were evaluated from the coffee germplasm bank of the Minas Gerais state. In the correlation study, eight cultivars were used on randomized complete block design with three replications. Were evaluated the caffeine levels in the grains and the third and fourth pair of true leaves. Six accessions had caffeine levels in grains smaller than 0.88%. Was also detected a significant correlation between the caffeine levels in the third (0.69) and fourth (0.92) pair of leaves and grains. Genotypes were identified with low levels of caffeine and great yield may be used as parental in breeding programs. It is possible to perform early selection for caffeine content in coffee plants, still in the seedling stage, by evaluating the fourth pair of leaves.

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“…Several studies carried out with different C. arabica cultivars and in different countries showed that the extent of cross-pollination in this species was around 10 -11% (Carvalho, 1988;Carvalho et al, 1991). This high self-pollination rate promotes genetic homozygosity and has led coffee breeders to seek genetic variability for agronomical traits, including low caffeine content Barre et al, 1998;Priolli et al, 2008). The usual approach has been to perform interspecific crosses between C. arabica and other coffee species (Carvalho, 1988 Despite the genetic homozygosity of C. arabica, the search for low caffeine-content coffee plants has revealed some variability in the alkaloid content Mazzafera et al, , 1997Silvarolla et al, 2000Silvarolla et al, , 2004.…”

Section: Introductionmentioning

confidence: 99%

Caffeine content variation in single green Arabica coffee seeds

Mazzafera

Silvarolla

2010

Seed Sci. Res.

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Coffea arabica L. is highly homozygotic and caffeine content in most cultivars is reported to be similar (approximately 1%). The caffeine content was analysed using individual seeds of cultivars Catuaí Vermelho, Mundo Novo and Bourbon Vermelho, and varieties Mokka and Laurina of C. arabica. Seeds were cut transversely in half, a thin slice from each was extracted in a mixture of chloroform and methanol, and caffeine was measured by high performance liquid chromatography. The extraction procedure was validated by comparison with two conventional methods less suited for analysing large numbers of seeds. The results revealed an unexpectedly large variation [Catuaí Vermelho: 3.72 -25.9 mg g 21 (seeds); Mundo Novo: 5.06 -18.59 mg g 21 ; Bourbon Vermelho: 6.76 -16.59 mg g 21 ] even in types naturally low in caffeine such as Laurina (1.17 -9.97 mg g 21 ) and Mokka (2.01 -9.64 mg g 21 ). The mean values for all cultivars were always in the range of the caffeine content found in the literature. Several studies showed that C. arabica has approximately 10% cross-pollination, but the variation observed in caffeine content in individual seeds was too large to be explained by cross-pollination.

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Caffeine inheritance in interspecific hybrids of Coffea arabica x Coffea canephora (Gentianales, Rubiaceae)

Cited by 10 publications

References 18 publications

Decaf and the Steeplechase Towards Decaffito—the Coffee from Caffeine-Free Arabica Plants

Decaf and the Steeplechase Towards Decaffito—the Coffee from Caffeine-Free Arabica Plants

Avaliação do teor de cafeína em folhas e grãos de acessos de café arábica

Caffeine content variation in single green Arabica coffee seeds

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