Volume 53 Number 3 Article 23
Year 1999 Month 7
Title: Effect of Rootstock on Fruit Characteristics and Tree Productivity in Seven Red-Fruited Pear Cultivars
Authors: D. Sugar, K.A. Powers and S.R. Basile
Abstract:
Seven red pear cultivars on seedling Pyrus betulifolia, P. calleryana, P. communis 'Winter Nelis,'
clonal 'Old Home' × 'Farmingdale' (OH × F) 18 or 97 (P. communis), or Quince BA-29C (Cydonia
oblonga) rootstocks were evaluated over a ten-year period.
The effects of rootstock on fruit characteristics and tree productivity were specific to each cultivar.
Rootstock tended to affect tree productivity
more than it affected fruit characteristics.
For 'Starkrimson,' fruiting began one year earlier with quince
than with the other rootstocks.
For 'Red Anjou,' fruiting began two years earlier with P. calleryana, and
for 'Canal Red' fruiting began one year earlier with P. calleryana than with the other rootstocks.
Fruiting of 'Sensation Red Bartlett' and 'Crimson Gem Cornice' began one year later with 'Winter Nelis'
than with the other rootstocks.
Fruit from trees growing on P. calleryana seedling had the smallest
length:diameter ratio in four of the seven cultivars tested.
Cumulative yield efficiency in 'Red Anjou'
and 'Crimson Gem Cornice' was greatest on quince and P. calleryana. Yield efficiency in 'Sensation
Red Bartlett' was highest on P. betulifolia and OH × F 97, although yield efficiency on P. betulifolia
was not significantly different than on 'Winter Nelis.' For 'Canal Red,' yield efficiency was highest on
quince and P. calleryana, although differences between P. calleryana and OH x F 18 were not significant.
For 'Cascade,' yield efficiency was highest on quince, P. calleryana, and OH × F 97, although
yield efficiency was not significantly different between OH × F 97 and 'Winter Nelis.'
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