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Jiangbo Dang, Tingrong Wu, Guolu Liang, Di Wu, Qiao He, and Qigao Guo

triploid loquat cultivar Wuheguoyu trough open-pollination. It displays some distinctive traits, especially the thin leaf character. In the present study we characterized the karyotype of the aneuploid loquat, and examined its leaf morphology and

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Hetal M. Kalariya, Guido Schnabel, Cesar Petri, and Ralph Scorza

antifungal protein; BB-OP = open-pollinated ‘Bluebyrd’. The five lines with the highest GAFP-1 signals (BB-OP-1, -3, -17, -18, and -21) were selected for PRR disease tests based on their GAFP-1 expression. Included were also one empty vector line (BB-OP-8 EV

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Megan F. Muehlbauer, Josh A. Honig, John M. Capik, Jennifer N. Vaiciunas, and Thomas J. Molnar

made in developing improved EFB-resistant hybrids from first-generation controlled crosses of C. avellana and C. americana as well as better selections from open-pollinated (OP) seedling populations of those original hybrids ( Molnar et al., 2005

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Timothy A. Rinehart, Brian E. Scheffler, and Sandra M. Reed

. febrifuga plants representing 19 genotypes; one of these was a plant labeled as D. hirsuta Gagnep. but was shown to be D. febrifuga . Two previously described ( Reed et al., 2008 ) intergeneric hybrids (samples #27 and 30) and four self-sown, open-pollinated

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Randy S. Sanderlin

need to treat the rootstock or grafted tree while dormant before transplanting into an orchard. Pecan rootstocks are produced from open-pollinated seed of grafted cultivars. Certain cultivars are preferred as sources of seed for rootstocks based on size

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M.K. Ehlenfeldt and M.R. Hall

T 286, a rabbiteye blueberry selection from a `Delite' × `Tifblue' cross, generally has been regarded as producing semi-seedless fruit. A comparison of nonpollinated flowers of T 286, `Delite', and `Tifblue' showed no differences in ovule count, and comparisons of ovules at 10, 20, and 40 days from manual cross-pollination showed no obvious evidence of embryo abortion. Manually cross-pollinated flowers contained 85, 60, and 38 seeds per fruit for `Delite', `Tifblue', and T 286, respectively. Open-pollinated fruit of T 286 had a seed count similar to that of open-pollinated `Tifblue' but possessed significantly heavier fruit. The number of seed in T 286 and `Tifblue' indicates a tendency toward parthenocarpy.

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James C. Fulton and Mark E. Uchanski

cultivars in their susceptibility to symptom manifestation ( Aloni et al., 1994 ; Hibberd, 1981 ; Smith et al., 1996 ; Stolk and Maaswinkel, 1977 ). Furthermore, open-pollinated cultivars have been described as more susceptible to the disorder ( Smith et

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Angela R. Davis, Charles L. Webber III, Wayne W. Fish, Todd C. Wehner, Stephen King, and Penelope Perkins-Veazie

screened to identify cultigens having a high concentration of L-citrulline that was stable over environments. Materials and Methods Plant material. Fifty-six ( Table 1 ) watermelon cultigens (open-pollinated and hybrids) grown in Lane, OK (Bernow fine

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Carlos G. Vaz, Domingos de Oliveira, and Orlando S. Ohashi

Cowpea, Vigna unguiculata (L.) Walp., is a very important legume in the diet of the population of the Amazon. Although it is autogamous, this species has a cross-pollination rate of ≈10%. Over several years, the mean productivity of cowpea has declined. We suggest that this is linked to a decrease in or an absence of pollinating insects in the fields. The objective of this study is to ascertain the pollinator contribution to cowpea production, as well as to determine the pollination type of the `BR3-Tracuateua' cultivar. In an experimental design, four treatments were compared: no pollination, with flowers in cages to prevent insect visits; open-pollination, with flowers exposed to all visiting insects; self-pollination, with flowers pollinated with their own pollen; and cross-pollination, with emasculated flowers being pollinated manually with pollen from another plant. We observed higher fruit set in the presence of pollinators (83%) than in their absence (77%, caged flowers). However, cross-pollination reduced both the number of seeds per pod and fruit set relative to self-pollination. This result suggests that pollinators have a complementary role in the yield of cowpea, by creating a mixed pollination system where self-pollination dominates.

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Narinder P.S. Dhillon, Supannika Sanguansil, Roland Schafleitner, Yen-Wei Wang, and James D. McCreight

Plant materials. One hundred and fourteen PIs comprised lines derived from accessions and landraces through inbreeding, open-pollinated lines released by the World Vegetable Center, and commercial hybrid cultivars, collectively referred to as cultigens