Escala para avaliação de estádios fenológicos do cafeeiro arábica

Pezzopane, José Ricardo Macedo; Júnior, Mário José Pedro; Thomaziello, R. A.; Camargo, Marcelo Bento Paes de

doi:10.1590/s0006-87052003000300015

Cited by 71 publications

(67 citation statements)

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“…The berries were collected from the middle branches of the trees and the central parts of the branches. After collection, berries at each stage were selected to standardize the maturation stage in accordance with the phenological scale proposed by Pezzopane et al (2003). The water content was determined in the berries at each stage by the acclimatized ambient method at 105°C for 24 h (Brasil, 2009).…”

Section: Methodsmentioning

confidence: 99%

Gene expression of antioxidant enzymes and coffee seed quality during pre- and post-physiological maturity

Santos¹,

Caixeta²,

Clemente³

et al. 2014

Genet. Mol. Res.

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ABSTRACT.Seeds collected at different maturation stages vary in physiological quality and patterns of protective antioxidant systems against deterioration. In this study we investigated the expression of genes that codify catalase (CAT), dismutase superoxide (SOD), and polyphenol oxidase (PPO) during the pre-and post-physiological maturation phases in whole seeds and in endosperms and embryos extracted from the seeds. Coffea arabica L. berries were collected at the green, yellowish-green, cherry, over-ripe, and dry stages, and the seeds were examined physiologically. The transcription levels of the genes were quantified by quantitative real-time polymerase chain reaction using coffee-specific primers. The highest level of SOD expression was observed in the endosperm at the cherry and over-ripe stages; in addition, these seeds presented the greatest physiological quality (assessed via germination test). The highest CAT3 transcript expression was observed at the green stage in whole seeds, and at the green and over-ripe stages in the embryos and endosperms. High expression of the PPO transcript was observed at the green and yellowish-green stages in whole seeds. In embryos and endosperms, peak expression of the PPO transcript was observed at the green stage; subsequently, peaks at the cherry and over-ripe stages were observed. We concluded that the expression patterns of the SOD and CAT3 transcripts were similar at the more advanced maturation stages, which corresponded to enhanced physiological seed quality. High expression of the PPO transcript at the over-ripe stage, also observed in the embryos and endosperms at the cherry stage, coincided with the highest physiological seed quality.

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Section: Methodsmentioning

confidence: 99%

Gene expression of antioxidant enzymes and coffee seed quality during pre- and post-physiological maturity

Santos¹,

Caixeta²,

Clemente³

et al. 2014

Genet. Mol. Res.

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“…The term "maturation cycle" has been used to predict such periods and refers to the time between flowering and fruit ripening. Maturation cycles may vary depending on climatic conditions and/or the coffee genotype grown (Pezzopane et al, 2003;Petek et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Dry matter and macronutrient accumulation in fruits of Conilon coffee with different ripening cycles

Partelli

Espindula

Marré

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYThe period between anthesis and fruit ripening varies according to the Conilon coffee (Coffea canephora) genotype. Therefore, the time of the nutritional requirements for fruit formation may differ, depending on the formation phase and the genotype, and may directly affect split application of fertilizer. The aim of this study was to quantify the accumulation of dry matter and N, P, K, Ca, Mg and S at several stages in the fruit of the Conilon coffee genotype with different ripening cycles, which may suggest the need for split application of fertilizer in coffee. The experiment was carried out in the municipality of Nova Venecia, Espírito Santo, Brazil, throughout the reproductive cycle. The treatments were composed of four coffee genotypes with different ripening cycles. A completely randomised experimental design was used. with five replicates. Plagiotropic branches were harvested from flowering to fruit ripening at 28-day intervals to determine the dry matter of the fruits and the concentration and accumulation of the nutrients they contained. The behavior of dry matter and macronutrient accumulation during the study period was similar and increasing, but it differed among genotypes sampled in the same season. Early genotypes exhibited a higher speed of dry matter and nutrient accumulation. Split application of fertilizer should differ among coffee genotypes with different ripening cycles (early, intermediate, late and very late).Index terms: Coffea canephora, genotypes, maturation cycle, fertilization management.(

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“…Depois, ocorre a granação dos frutos e a fase de maturação (CAMARGO & CAMARGO, 2001). Pezzopane et al (2003) apresentam uma escala detalhada do ciclo fenológico do cafeeiro arábica, principalmente para as fases reprodutivas.…”

Section: Introductionunclassified

“…Apesar dessa constatação, o tempo necessário para a completa maturação é influenciado por condições climáticas (KUMAR, 1979) e pela constituição genética do cafeeiro (SONDAHL & SHARP, 1979). Na cafeicultura, o conhecimento dos efeitos dos elementos climáticos no desenvolvimento fenológico da cultura tem grande aplicação nas práticas de manejo (PEZZOPANE et al, 2003). Dentre os elementos climáticos, destaca-se a temperatura do ar, que atua na duração do ciclo reprodutivo, condicionando a época de colheita.…”

Section: Introductionunclassified

Exigência térmica do café arábica cv. Mundo Novo no subperíodo florescimento-colheita

Pezzopane¹,

Júnior

Camargo

et al. 2008

Ciênc. agrotec.

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RESUMOForam determinados para o café arábica cv. Mundo Novo, a temperatura base inferior e a soma térmica, expressa em grausdia, além do acúmulo de evapotranspiração de referência (ETo) e real (ETr), para o subperíodo florescimento-colheita, utilizando-se dados fenológicos de cultivos dos anos de 1971 a 2004. Foi proposto ainda um fator de correção para o cálculo de graus-dia em função da disponibilidade hídrica nos oito primeiros decêndios após o florescimento. Os valores de temperatura-base e soma térmica obtidos foram de 10,2ºC e 2887 graus-dia e 10,5ºC e 2761 graus-dia, quando determinados sem e com correção pelo fator hídrico, respectivamente. O acúmulo médio de Eto para o subperíodo do florescimento à colheita foi de 761mm e para Etr 689 mm; quando se levou em consideração o acúmulo de ETr apenas no início do desenvolvimento dos frutos (oito primeiros decêndios), o valor médio foi de 721mm. A utilização de métodos que levaram em consideração a influência da disponibilidade hídrica melhorou a estimativa da temperatura base e a soma térmica no subperíodo do florescimento à colheita do cafeeiro Mundo Novo. Termos para indexação:Graus-dia, fenologia, Coffea arabica, evapotranspiração. ABSTRACTBase temperature and heat requirement, using degree-days were evaluated for coffee cv. Mundo Novo. The sum of reference (ETo) and actual (ETr) evapotranspiration were also determined for the flowering-harvest phenological stage, using coffee phenological data for the growing season from 1971 to 2004. A correction factor was proposed for the degree-days sum related to available water on the first eighty days during the beginning of flowering. The obtained values of base temperature and degree-days requirements were, respectively, 10.2ºC and 2887 degree-days and 10.5ºC and 2761 degree-days when evaluated with and without adjustement for water deficit. The mean value for ETo sum was 761 mm, and for ETr, 689 mm. When considered the sum of ETr during the development of the berries (first 80 days after flowering) was considered the mean values were 721 mm. The correction factor for water deficit improved the determination of base temperature and heat sum for the flowering-harvest stage for Mundo Novo coffee plants.

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Escala para avaliação de estádios fenológicos do cafeeiro arábica

Cited by 71 publications

References 1 publication

Gene expression of antioxidant enzymes and coffee seed quality during pre- and post-physiological maturity

Gene expression of antioxidant enzymes and coffee seed quality during pre- and post-physiological maturity

Dry matter and macronutrient accumulation in fruits of Conilon coffee with different ripening cycles

Exigência térmica do café arábica cv. Mundo Novo no subperíodo florescimento-colheita

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