|Authors: ||M.M. Sharifani, J.F. Jackson|
|Keywords: ||Pollination, Parthenocarpy, Pear, Packham, Triumph, Fruit weight, Fruit set|
Parthenocarpy in pear is considerable, because under poor pollination conditions it is the main mechanism for fruit set.
This study was conducted to examine the effect of wind on the pollination and fruit set of Packham Triumph and Lemon Bergomot pear cultivars.
The objective was to determine the strength of parthenocarpy for these two cultivars under a cage situation where no insect pollination occurred.
The experiments were conducted in the Adelaide’s hills, south Australia.
Two treatments consisting of caged and non-caged (control) were used. For caged trees, nylon meshes of beeproof density and transmitting 80% light covered the tree before bloom.
Fruit set, seed set and fruit weight were variable characters in a randomised complete block design (RCBD) to test the treatments.
Mean of the variables for both treatments were compared using Tukey’s test.
Fruits from the caged treatment were completely seedless for both cultivars.
A significant increase in average weight of Packham Triumph fruits was obtained from the cage treatment, while this result was not observed for Lemon Bergomot.
Initial and final fruit set were not affected by cage treatment for both cultivars.
As a result, pollination of these pear cultivars depends only on insect pollination.
However, we conclude the strengths of parthenocarpy in these two cultivars are very high with respect to the regional situation of the experiment.
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