Tree testing and estimation of heritability using the pedunculate oak Quercus robur L. seed orchard in the Krotoszyn Forest District
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tree breeding seedling seed orchards hodowla selekcyjna rodowe plantacje nasienne heritability odziedziczalność
Abstract
In this paper, we present the results and analyse of tree height measurements, phenological observations (bud flushing), oak powdery mildew symptoms and multiple shoots of pedunculate oaks Quercus robur L. at the age of 12 years. The examined oaks belonged to 29 open pollination families. Family as well as individual heritability scored very highly for their respective indices. The calculated indices were 0.83 for tree height, 0.98 for flushing of buds, 0.53 for oak powdery mildew symptoms and 0.58 for the multi stem index. Family seed orchards established using a completely randomized design are not a reliable substitute for progeny testing, because of the commonly small number of collected families.
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Barzdajn, Władysław, and Maciej Bruder. “Tree Testing and Estimation of Heritability Using the Pedunculate Oak Quercus Robur L. Seed Orchard in the Krotoszyn Forest District”. Leśne Prace Badawcze, vol. 79, no. 4, Dec. 2018, pp. 309-15, doi:10.2478-frp-2018-0031.
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