Yield Component Analysis of `Harrow Delight', `Kieffer', and `Harvest Queen' Pear

in Journal of the American Society for Horticultural Science
Author: Frank Kappel1
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  • 1 Agriculture Canada, Research Station, Summerland, B.C. VOH 1ZO, Canada

Yield components of 8- to 10-year-old trees were compared among `Kieffer' [Pyrus communis (L.) x Pyrus pyrifolia (Burro.)] and `Harrow Delight' and `Harvest Queen' [Pyrus communis (L.)]. `Kieffer' set more fruit than the other cultivars, even though flower density was similar. `Kieffer' also had similar size or larger fruit than `Harrow Delight' or `Harvest Queen'. Path analysis showed that the direct and indirect effect of fruit number on yield was important for all cultivars. Flower density only had a small direct effect on yield and this was at times negative. Fruit size had a small effect on yield when compared to fruit number.

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