Strawberries from six cultivars, 'Mrak', 'Ranier', 'Redcrest', 'Selva', 'Sumas' and 'Totem', were compared for sensory attributes, chemical properties and 25 selected volatile compounds. 'Redcrest' strawberries had the most intense sourness, lowest pH, high titratable acidity and least overall fruit quality rating. Two-dimensional partitioning (TDP) revealed that overall quality ratings of the strawberries from all cultivars were dependent primarily on odor and sweetness. Cultivars differed in all orthogonal variates except odor. While judges could not detect odor differences, volatiles were greatest in 'Mrak' and 'Selva' and least in 'Ranier' and 'Redcrest'. Canonical variate analysis (CVA) based on 25 selected volatile compounds was used to classify cultivars according to the region in which they were bred.

Additional index words. Rubus idaeus, fruit breeding, fruit quality, yield, machine harvesting

Blue honeysuckle (Lonicera caerulea L.) is a novel fruit crop that stands out for its northern climatic adaptation. Understanding spring phenological adaptation to temperate climate is central to development of a broader range of production and greater mainstream crop potential. In 2012 and 2013 across three sites in the Fraser Valley, British Columbia, spring phenophases from bud break to fruit harvest were determined across three foundation groups. Genetic variability is characterized for Russian, Japanese, and Kuril blue honeysuckle foundation groups used in breeding at the University of Saskatchewan, Saskatoon, SK. Germplasm group membership is the principal feature of phenological adaptation. Although temperate climate adaptation is limited in the Russian germplasm, the intermediate Japanese and later Kuril spring phenology provide an adequate degree of temperate climate adaptation to facilitate commercial production. These findings demonstrate that blue honeysuckle has phenological adaptation to a temperate climate. Diversity between and within genetic groups presents opportunities for crop enhancement, especially through breeding for later bloom periods.Résumé : Le camérisier bleu (Lonicera caerulea L.) est une nouvelle culture fruitière, remarquable par son adaptation au climat nordique. Il est capital de comprendre comment les caractères phénologiques vernaux s'adaptent au climat tempéré si l'on veut multiplier les variétés et augmenter le potentiel commercial des principaux cultivars. En 2012 et 2013, les auteurs ont déterminé les phénophases vernales (du débourrement à la récolte) de trois groupes de fondation, à trois sites de la vallée du Fraser, en Colombie-Britannique. Ils ont caractérisé la variabilité génétique des groupes de fondation du camérisier bleu russe, japonais et kourile employés pour l'hybridation à l'Université de la Saskatchewan. L'appartenance à un groupe génétique est la principale raison de l'adaptation phénologique. Si l'adaptation du matériel génétique russe au climat tempéré est restreinte, les caractères vernaux intermédiaires des variétés japonaises et kouriles autorisent une acclimatation suffisante aux conditions tempérées pour que la production commerciale puisse être envisagée. Ces résultats illustrent que la phénologie du camérisier bleu peut s'adapter au climat tempéré. La diversité au sein des groupes génétiques et entre ceux-ci permettrait d'améliorer la culture par la création de variétés à floraison plus tardive, essentiellement par l'hybridation. [Traduit par la Rédaction]

No abstract

Eight day-neutral and seven short-day strawberry (Fragaria ×ananassa, Duch.) varieties were evaluated on raised beds during 1990 and 1991 in the Fraser River valley, B.C. Among day-neutral varieties in 1990, total variation in marketable yield originated in fruit count (26%), total yield (18%), average leaf size (22%), and runner count (19%) per plant. In 1991, total variation in marketable yield originated in fruit count (38%), runner count (23%), crown count (13%), and total yield (16%) per plant. `Selva' was one of the most productive day-neutral varieties and had the heaviest fruit and the fewest culls during both years of the study. The short-day varieties had uniformly low yields of marketable fruit during the establishment year, 1990. Variation in marketable yield in 1991 originated in runner count (34%), total yield (18%), and fruit count (16%) per plant. Of the short-day varieties in 1991, `Shuswap' had the highest marketable yield and, along with `Pajaro' and `Sequoia', had the fewest culls. `Shuswap' was a prolific producer of runners, while `Sumas' and `Redcrest' yielded well without prolific runner production.