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    Author(s): Paul P. KormanikShi-Jean S. Sung; Taryn L. Kormanik; Stanley J. Zarnoch; Scott Schlarbaum
    Date: 1997
    Source: Proceedings of the second meeting of working party 2.08.05, Genetics of <I>Quercus</i>, of the International Union of Forest Research Organizations; 1997 October 12-17; University Park (State College), PA.: 194-200.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (221 KB)

    Description

    Heritability estimates (h2) were calculated for first-order lateral root (FOLR) numbers on a family plot mean basis for 5 Quercus species: Q. alba, Q. falcata, Q, michauxii, Q. pagoda, and Q. rubra. All species were grown with the same nursery soil fertility protocol and the same seedling bed density (54-67/m2). Regardless of Quercus species, seedlings with the fewest FOLR (0-3) were not generally competitive in the nursery bed environment and had the smallest root collar diameter and height. In any family, those individuals with the most robust root systems exhibited the fastest growth and occupied the dominant crown position. Based upon root morphology and stem characteristics, less than 50 percent of the seedlings from any species may be competitive and occupy a dominant crown position in the nursery.

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    Citation

    Kormanik, Paul P.; Sung, Shi-Jean S.; Kormanik, Taryn L.; Zarnoch, Stanley J.; Schlarbaum, Scott 1997. Heritability of first-order-lateral roots in five Quercus species: effect on 1-0 seedling quality evaluation. Proceedings of the second meeting of working party 2.08.05, Genetics of Quercus, of the International Union of Forest Research Organizations; 1997 October 12-17; University Park (State College), PA.: 194-200.

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