Abstract
Nolana L.f. is a large, diverse genus in the Solanaceae endemic to the coastal deserts of Peru and Chile. Floral development studies were conducted in eight species (Nolana adansonii, N. aticoana, N. elegans, N. humifusa, N. ivaniana, N. laxa, N. plicata, and N. rupicola) as a precursor to breeding efforts and studies of interspecific sexual compatibility. Levels of stigma receptivity and pollen viability were evaluated at different stages during flower development. Species were found to be receptive to pollination over a wide range of floral developmental stages, including stages prior to anthesis. Pollen was found to remain viable throughout the open flower period and into senescence. Floral development keys were developed which provide a visual reference correlating morphological appearance of buds and flowers of each species at each developmental stage, and their corresponding durations and levels of stigma receptivity.
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Acknowledgments
This study was partially supported by the New Hampshire Agricultural Experiment Station and a 2006 grant from The American Floral Endowment. The authors would like to thank Dr. Michael Dillon, Field Museum, Chicago, IL and Víctor Quipuscoa, Universidad Nacional San Agustín, Arequipa, Perú for help in obtaining plant material; Drs. Paul Fisher and Tom D. Davis for helpful discussions and revisions of early versions of the manuscript; and John McLean, Evan Ford and Ryan Lockhart for greenhouse plant maintenance.
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Douglas, A.C., Freyre, R. Floral development, stigma receptivity and pollen viability in eight Nolana (Solanaceae) species. Euphytica 174, 105–117 (2010). https://doi.org/10.1007/s10681-010-0145-8
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DOI: https://doi.org/10.1007/s10681-010-0145-8