Injuries induced in different strawberry genotypes by winter freeze and their effect on subsequent yield

Abstract

Severe frosts without snow cover are disastrous for the garden strawberry, Fragaria · ananassa Duch. The objectives of this study were to determine injuries, caused by freeze to crowns and roots of 13 and five different cultivars/lines in 2002 and 2003, respectively; to observe subsequent plant behaviour; to measure yield and to find out its dependence upon the injuries. Based on percentages of injured branch crowns and roots, estimates of plant growth and yields, the relationships between the indices have been established. Root injury has had a stronger effect on plant growth compared with crown injury. Yield has been found to be correlated only with plant growth, root damage and root-to-crown ratio of per cent survival when root damage was heavy. Two different strategies of the cultivars/lines, associated with their morphological characteristics and physiological peculiarities influencing plant survival, growth and yield, have been revealed. To discern the characters and cultivar types that can be valuable in such extreme conditions, differences in the genotypes responses to freeze are examined and thoroughly analysed in the paper.

Bayesian Inference of Genetic Parameters for Survival, Flowering, Fruit Set, and Ripening in a Germplasm Collection of Chilean Strawberry Using Threshold Models

“…Future breeding work focusing on the most important one or two disease-causing pathogens is a reasonable strategy to improve plant survival because heritability of resistance to individual pathogens is probable to be higher. Growth response, productivity, and fruit quality often garner the majority of attention in the cultivated strawberry (Atkinson et al, 2006;Cocco et al, 2010;Kadir et al, 2006;Zorrilla-Fontanesi et al, 2012), but survival is another important selection criterion, especially with respect to local adaptation (Shokaeva, 2008). Clones having low survival in a particular geographic area would not be economically viable in intensive crop farming.…”

Strawberry Cultivar Injury After Two Contrasting Minnesota Winters

“…'L'Amour', 'Evangeline', and 'Clancy' had higher strawberry plant stand reduction than 'Sable', 'Brunswick', 'Mesabi TM ', and'Annapolis' after Winter 2006-2007 (Table 1). The stand ratios of 'Evangeline' and 'Clancy' were also lower than 'Cavendish', 'Kent', 'Glooscap', and 'Honeoye' ( Shokaeva (2008) studied the winter damage of crown, branched crown, and root system of various genotypes and identified different strategies to survive the cold winter. Because we did not collect similar destructive data on this set of cultivars, further investigation is needed to confirm whether injury avoidance strategies vary among these 15 cultivars.…”

Metabolite profiling reveals novel multi-level cold responses in the diploid model Fragaria vesca (woodland strawberry)

“…Even though several Fragaria cultivars have been developed for cultivation under northern climates, their freezing tolerance is still rather limited (Sønsteby and Karhu, 2005;Shokaeva, 2008).…”