1. Performance of blueberry cultivars under mild winter conditions
- Author
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Claudine Maria de Bona, Luiz Antonio Biasi, José Gilberto Sousa Medeiros, and Francine Lorena Cuquel
- Subjects
0106 biological sciences ,pequenas frutas ,Titratable acid ,Berry ,Biology ,01 natural sciences ,postharvest ,lcsh:Agriculture ,Crop ,Soluble solids ,chilling hours ,Cultivar ,lcsh:Agriculture (General) ,pós-colheita ,General Veterinary ,small fruits ,lcsh:S ,04 agricultural and veterinary sciences ,biology.organism_classification ,lcsh:S1-972 ,horas de frio ,Horticulture ,040103 agronomy & agriculture ,Postharvest ,0401 agriculture, forestry, and fisheries ,Vaccinium spp ,Animal Science and Zoology ,Agronomy and Crop Science ,010606 plant biology & botany ,Vaccinium - Abstract
EnglishEvaluation of yield performance is important to find the most adapted blueberry cultivars in a particular region. This research aimed to evaluate the flowering and hasvesting periods, the production per plant, and fruit quality of eight rabbiteye blueberry cultivars (Aliceblue, Bluebelle, Bluegem, Briteblue, Climax, Delite, Powderblue, and Woodard) and two highbush blueberries (Georgiagem and O’Neal), in mild winter conditions in Pinhais-PR. Flowering and harvesting periods, production, berry weight, size, pH, soluble solids, titratable acidity, ratio and color of the fruits were evaluated in the 2013/2014 and 2014/2015 growing seasons, when the plants had two and three years old, respectively. Cultivars flowered from August to September, and harvest was concentrated in November and December. Berry weight, size, pH, soluble solids and acidity varied among the cultivars. The average ratios of 14.97 and 13.39 for each crop proved that the cultivars have good fruit quality. There was little variation in fruit color in the two years evaluated. Blueberry cultivars showed the staining characteristics and physical and chemical attributes of quality compatible to blueberry from other traditional regions. Under mild winter conditions, young plants of rabbiteye blueberry cultivars, Climax, Delite, Bluegem and Powderblue, are the most productive, while the highbusch cultivars bear few fruits. Key words: Vaccinium spp; small fruits; chilling hours; postharvest portuguesA avaliacao do desempenho produtivo e importante para encontrar as cultivares de mirtileiro mais adaptadas a uma determinada regiao. Este trabalho teve como objetivo avaliar o periodo de floracao e de colheita, a producao por planta e a qualidade de frutos de oito cultivares de mirtileiro do grupo rabbiteye (Aliceblue, Bluebelle, Bluegem, Briteblue, Climax, Delite, Powderblue e Woodard) e duas do grupo highbush (Georgiagem e O’Neal) em condicao de inverno ameno em Pinhais-PR. Foram avaliadas as datas de inicio e final de floracao, inicio e final de colheita, producao por planta, massa, tamanho de fruto, pH, teor de solidos soluveis, acidez titulavel, ratio e coloracao nos ciclos produtivos de 2013/2014 e 2014/2015, quando as plantas possuiam dois e tres anos, respectivamente.As cultivares estudadas apresentaram floracao nos meses de agosto e setembro, concentrando a colheita nos meses de novembro e dezembro. Houve diferencas entre as cultivares quanto a massa do fruto, tamanho, pH, teor de solidos soluveis e a acidez. O ratio medio de 14,97 e 13,39 obtido em cada safra provou que as cultivares tem boa qualidade de frutos. A coloracao dos frutos apresentou poucas variacoes nos dois anos avaliados. O mirtilo das cultivares avaliadas apresentou caracteristicas de coloracao e atributos fisicos e quimicos de qualidade compativel com o mirtilo de outras regioes tradicionalmente produtoras. Em regiao com inverno ameno, plantas jovens das cultivares Climax, Delite, Bluegem e Powderblue, do grupo rabbiteye, sao as mais produtivas, enquanto as cultivares do grupo highbush produzem poucos frutos. Palavras-chave: Vaccinium spp; pequenas frutas; horas de frio; pos-colheita
- Published
- 2017
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