New Zealand Journal of Crop and Horticultural Science abstracts
Contribution of plum and cherry rootstocks
to virus incidence in New Zealand stone fruit trees
G. A. WOOD
The Horticulture and Food Research
Institute of New Zealand
Mt Albert Research Centre
Private Bag 92 169
Auckland, New Zealand
Abstract Rootstocks used in the past for stone fruit trees in
New Zealand were traced, where possible, back to their time of importation.
Some of the rootstocks had been in use in New Zealand since before the turn of
this century, but the most important were imported mainly from England between
1930 and 1960. Rootstocks used commonly for plums (Prunus salicina
Lindl.), apricots (P. armenica L.), and sweet cherries (P.
avium L.), and also some which were trialled but did not become popular,
were tested for the presence of virus diseases. With plums, the four most
important rootstocks (`Brompton', `Marianna', `Myrobalan B', and `St Julien A')
were free from infection. However, Prunus necrotic ringspot, dark green
sunken mottle (apple chlorotic leaf spot), and plum line pattern viruses
occurred in others. In cherries, Prunus necrotic ringspot virus occurred
in most of the rootstocks, with prune dwarf, green ring mottle, and little
cherry viruses sometimes also being present. `Kentish Red', a P.
cerasus (L.) cherry rootstock, had the highest incidence of infection.
Presence of the viruses in the plum and cherry rootstocks would have
contributed to the high incidence of infection in plum, apricot, and cherry
trees, and explained why peaches (P. persica L.) and nectarines (P.
persica var. nucipersica (Borkh.) C. K. Schneider), which are
normally grown on peach seedling rootstocks were generally less commonly
infected.
Keywords Prunus; plum rootstocks; cherry rootstocks;
virus disease; disease testing
New Zealand Journal of Crop and Horticultural Science, 1997, Vol. 25:
131-139
0114-0671/97/2502-0131 $7.00/0 (c) The Royal Society of New Zealand
1997
PDF file of entire paper: medium quality (697K); (scanned from paper original: notes about this process)
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