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Plant Sciences

Journal of the Arkansas Academy of Science

2006

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Vascular Flora Of The South Fork Native Plant Reserve, Van Buren County, Arkansas, Theo Witsell, Brent Baker Jan 2006

Vascular Flora Of The South Fork Native Plant Reserve, Van Buren County, Arkansas, Theo Witsell, Brent Baker

Journal of the Arkansas Academy of Science

The South Fork Native Plant Preserve, a property owned and managed by the Gates Rogers Foundation, Inc., is located along the South Fork of the Little Red River (now Greers Ferry Lake) in Van Buren County, Arkansas. We conducted a floristic inventor/ of a 61.3 ha study area consisting of the preserve, adjacent lakefront property owned by the U.S. Army Corps of Engineers, and a riparian corridor on neighboring land from February through November 2005. A total of 582 vascular plant taxa, representing 118 families and 336 genera, was documented including six species (Carex lupuliformis Sartwell ex L.H.Dewey, Carex swanii …


Evaluation Of Cross Pollination Of Zephyranthes And Habranthus Species And Hybrids, Moytri Roy Chowdhury, John Hubstenberger Jan 2006

Evaluation Of Cross Pollination Of Zephyranthes And Habranthus Species And Hybrids, Moytri Roy Chowdhury, John Hubstenberger

Journal of the Arkansas Academy of Science

The genus Zephyranthes and the related genus Habranthus in the family Amaryllidaceae are commonly grown ornamental bulbs having new world homologies. Inter-specific and inter-generic hybridizations are complicated by the fact that some of the species are apomictic, cross incompatible, or have widely variable 2n chromosome numbers. A simple, inexpensive method of pollen storage was tested to evaluate the production of hybrid seed. Intact anthers harvested after pollen release and stored at 4°C were used for pollination. Emasculated flowers were pollinated at noon on the first or second day of anthesis. Hybrid crosses were labeled and seed collected when formed. All …


Development Of In Vitro Regeneration Protocols For Arkansas Rice Varieties (Oryza Sativa L.), Moytri Roy Chowdhury, Audrei Dabul, John Hubstenberger, Gregory Phillips Jan 2006

Development Of In Vitro Regeneration Protocols For Arkansas Rice Varieties (Oryza Sativa L.), Moytri Roy Chowdhury, Audrei Dabul, John Hubstenberger, Gregory Phillips

Journal of the Arkansas Academy of Science

Efficient regeneration of in vitro cultures of Oryza sativa L.is essential for successful manipulation of recombinant DNA technologies. Arkansas rice varieties perform better on modified Gamborg (B5)media, than on Murashige and Skoog (MS) orN6 media, which are more frequently reported in the literature. While 2,4-dichlorophenoxyacetic acid (2,4-D) is commonly used for regeneration treatments of rice, Picloram (Pic) provides a possible alternative as a synthetic auxin source. Although regeneration frequency appears low, complete regeneration (whole plantlets) was faster and development of the shoot was superior on picloram treatments as compared to 2,4-D. Screening 5 Arkansas varieties for regeneration efficiency on 3 …


Chinese Flame Tree (Koelreuteria Bipinnata Franch.) (Sapindaceae) New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Sara Melancen Jan 2006

Chinese Flame Tree (Koelreuteria Bipinnata Franch.) (Sapindaceae) New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Sara Melancen

Journal of the Arkansas Academy of Science

No abstract provided.