Abstract
ABSTRACT ‘SJP84-5162’ is a hybrid seedling resulting from a cross made between ‘Robusta 5’ and ‘Malling 27’ (Malling 13 × Malling 9). It is a new dwarfing clonal apple rootstock developed at the Agriculture and Agri-Food Canada (AAFC) Research Station, St-Jean-sur-Richelieu, Quebec, and has been undergoing evaluations since 1984 in several locations in Quebec including Frelighsburg, Mont-St-Grégoire, L'Acadie, and Dunham. The test code SJP derives from St-Jean (SJ) and porte-greffe (P), which is French for rootstock. It produces dwarf trees similar to ‘M.9’ and ‘M.26’ and because of its superior hardiness it is better adapted to Canadian conditions. ‘SJP84-5162’ was planted in 1997 in replicated trials in several plots at the Frelighsburg and L'Acadie substations and also at two grower sites using ‘McIntosh Summerland’ as scion. Reevaluated for its performance, it has a better efficiency than ‘M9’ and on average is more precocious.
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