Scion/Rootstock Influence on Tree Survival of Asian Pears in the First Growing Season
DOI:
https://doi.org/10.71318/apom.1986.40.3.88Abstract
Tree mortality in a new planting of 10 Asian pear cultivars (‘20th Century’, ‘Chojuro’, ‘Hosui’, ‘Kikusui’, ‘Niitaka’, ‘Okusankichi’, ‘Seigyoku’, ‘Shinku’, ‘Shinseiki’ and ‘Tsu Li’) on 5 Old Home x Farmingdale (OHF) rootstocks (OHF 51, OHF 97, OHF 217, OHF 282, OHF 333) and Provence quince rootstock was related to rootstock and scion which, in turn, appeared to be related to water stress. Mortality was 21% overall. Survival rate in relation to rootstock ranged from 57% for OHF 51 (most dwarfing) to 94% for OHF 217 (semi-vigorous). Survival in relation to scions ranged from 57% and 64% for ‘Tsu Li’ and ‘Niitaka’, respectively to 97% for ‘20th Century’ The combinations exhibiting the poorest survival were ‘Tsu Li’ (9%) and ‘Niitaka’ (14%) on OHF 51.
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