Spring phenological adaptation of blue honeysuckle (Lonicera caerulea L.) foundation germplasm in a temperate climate

Abstract

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]

Fresh haskap berry postharvest quality characteristics and storage life

“…Maxine Thompson and Dr. Bob Bors (University of Saskatchewan) (Bors et al 2015;Bors et al 2009;Bors et al 2012;Thompson and Barney 2007;Thompson 2006Thompson , 2016aThompson , 2016bThompson , 2016cThompson , 2016dThompson , 2017aThompson , 2017bThompson and Chaovanalikit 2003), with the germplasm sourced for their programs originating from Japan, the Kuril Islands, Russia, and Canada. Haskap germplasm characteristics-including parameters influencing location-specific suitability-are available through studies published by Gerbrandt (2014) and Gerbrandt et al (2017Gerbrandt et al ( , 2018aGerbrandt et al ( , 2018bGerbrandt et al ( , 2020. Due to the recent introduction of these cultivars, detailed or cultivar-specific horticultural management guidance is limited.…”

Haskap Preharvest Fruit Drop and Stop-drop Treatment Testing

“…In Montana, average fruit weights of North American commercial cultivars are between 0.96 and 1.70 g (Setzer, 2020), and the shape varies from rounded oval to greatly elongated (Bors et al, 2015). Haskap can be grown in areas that are too cold or alkaline for blueberry because of its tolerance to a wide range of soil pH (up to 8.0) and exceptional cold hardiness (Bors et al, 2012(Bors et al, , 2015Gerbrandt, 2014). In addition, their blossoms can withstand freezing temperatures (Gasic et al, 2018).…”

“…In addition, their blossoms can withstand freezing temperatures (Gasic et al, 2018). It is an early-season fruit crop and, in some locations, it ripens before or concurrent with June-bearing strawberry [Fragaria ×ananassa (Gerbrandt, 2014;Gerbrandt et al, 2017)]. Pollinizer plants (compatible cultivars) are required for good fruit set (Gerbrandt, 2014;Plekhanova, 1996).…”

“…Haskap breeding materials, collection, evaluation, and breeding efforts (Bors et al, 2009(Bors et al, , 2012(Bors et al, , 2015Gerbrandt et al, 2017Gerbrandt et al, , 2018Gerbrandt et al, , 2020Thompson, 2006Thompson, , 2016aThompson, , 2016bThompson, , 2016cThompson, , 2016dThompson, , 2017aThompson, , 2017bThompson and Barney, 2007) have supported the expanding industry in both the United States and Canada. Canadian haskap production increased 64% from 2018 to 2019 (Statistics Canada, 2020), and farms range in size from 0.5 to 40 acres or more.…”

“…À1 1 ( F À 32) Ä 1.8 F C ( C × 1.8) 1 32limited and, due to breeding materials originating from different locales, these cultivars may have climate limitations(Gerbrandt et al, 2017(Gerbrandt et al, , 2018. There are relatively few resources to guide growers regarding cultivar selection, plant management, and harvest parameters.…”