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- Author or Editor: J. C. Wysolmerski x
Abstract
A laboratory tank test was devised to evaluate susceptibility of 1-year-old stems of 111 Malus cultivars and hybrids to damage from pine voles (Microtus pinetorum Le Conte). This method allowed several clones to be tested at one time; provided the animals with a semi-natural environment in the laboratory; exposed each animal to all stems in the test; and required only small quantities of wood per clone. Cultivars displaying a high degree of resistance to pine vole gnawing included: Malus fusca (Raf.) Schneid. H15; M. sieboldii (Reg.) Rehd. zumi calocarpa; M. × sublobata (Zab.) Rehd. PI 286613; NY 11928 (M. pumila niedzwetzkiana (Dieck) Schneid. × M. × atrosanguinea (Spaeth) Schneid.); M. × robusta (Carr.) Rehd. No. 5 (R5); and M. yunnanensis (Franch.) Schneid. ‘Vilmorin’. Families from R5 and PI 286613 crossed with M. pumila Mill, cultivars exhibited varying degrees of vole resistance.