caa a22 4500 475817737 CHVBK 20180406123813.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1007/s004970000046 doi (NATIONALLICENCE)springer-10.1007/s004970000046 Early-acting inbreeding depression in three species of Vaccinium (Ericaceae) [Elektronische Daten] [Karen Hokanson, J. Hancock] Abstract : Greenhouse pollinations were performed to determine whether early-acting inbreeding depression is contributing to low levels of self-fertility in three Vaccinium species: V. myrtilloides Michaux, V. angustifolium Aiton, and V. corymbosum L. All three species showed a significant reduction in self fruit set and in the proportion of fertilized ovules that developed into mature seed in self compared to outcross fruit. Reductions were more severe in V. myrtilloides and V. angustifolium than in V. corymbosum; however, early-acting inbreeding depression appeared to be the primary factor limiting self-fertility in all three species. Evidence for early- acting inbreeding depression included the presence and higher proportion of aborted ovules in self fruit than in outcross fruit, a correlation between levels of self and outcross seed set, and pollen chase experiments demonstrating that self-pollen does fertilize the ovules. Self-fertility in the three species was probably influenced by levels of genetic load, ploidy level and outcrossing rates. Springer-Verlag Berlin Heidelberg, 2000 Keywords Vaccinium myrtilloides nationallicence V. angustifolium nationallicence V. corymbosum nationallicence Autopolyploidy nationallicence Genetic load nationallicence Self-incompatibility nationallicence Hokanson Karen Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA, US aut Hancock J. Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA, US aut https://doi.org/10.1007/s004970000046 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s004970000046 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hokanson Karen Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA, US aut NATIONALLICENCE 700 1- Hancock J. Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA, US aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer