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Work conducted by
Jeff Norcini and other faculty at the University of Florida/IFAS has
shown that seed source can affect growth, flowering, and survival of
several native wildflower species. Plants derived from wildflower
populations native to Florida have been compared to plants of the
same species but derived from non-Florida sources. Substantial
difference in growth, flowering, and/or survival between Florida and
non-Florida plants have been observed for black-eyed Susan (Rudbeckia
hirta), blanketflower (Gaillardia pulchella), standing
cypress (Ipomopsis rubra), lanceleaf coreopsis (Coreopsis
lanceolata), lyreleaf sage (Salvia lyrata), and
buffaloclover (Trifolium repens).
For example,
plants of black-eyed Susan derived from seed collected from native
populations in north and central Florida were not as showy as plants
from Texas seed but they consistently survive longer than plants
from Texas plants. Survival of lyreleaf sage and blanketflower was
also longer for Florida plants than for non-Florida plants.
For more
information, please contact Jeff Norcini at
jgn@mail.ifas.ufl.edu or go to
nfrec.ifas.ufl.edu.
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Black-eyed
Susan From Different Seed Sources |
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North Florida |
Central
Florida |
Texas |
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* A
Black-eyed Susan selection with lemon-yellow flowers. North Florida
and Texas Black-eyed Susan have buttery yellow flowers. |
