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Full-Text Articles in Life Sciences
Evaluation Of Cross Pollination Of Zephyranthes And Habranthus Species And Hybrids, Moytri Roy Chowdhury, John Hubstenberger
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
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 …
Adventitious Shoot Propagation And Cultural Inputs In Nursery Production Of A Primocane-Fruiting Blackberry Selection, Kimberley Dennis, John R. Clark, James A. Robbins
Adventitious Shoot Propagation And Cultural Inputs In Nursery Production Of A Primocane-Fruiting Blackberry Selection, Kimberley Dennis, John R. Clark, James A. Robbins
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Studies were conducted from January to October 2005 to determine the effect of root-cutting length on adventitious shoot yield and the management practices necessary to produce nurseryquality primocane-fruiting blackberry plants. The first portion of the study measured the average number of shoots produced from 7.6 cm- and 15.2 cm-long root cuttings of APF-44 blackberry—a primocane-fruiting genotype from the University of Arkansas breeding program. Cuttings were forced in a shallow bin containing a soilless potting medium. The average number of shoots per root cutting from 7.6 cm- and 15.2 cm- long root cuttings averaged 1.6 and 2.7 shoots per root cutting, …