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Callus Formation And Differentiation In Embryos Of The Coconut Palm (Cocos Nucifera L.), Jyoti Mangesh Desai

Masters Theses

Embryos of Cocos nucifera L. were allowed to develop on various agar based, plant tissue culture media. Environmental conditions, temperature, light intensity levels and photoperiod were regulated throughout the period of the experiment. The anatomy of commercially available embryos (excised from the "seed") and tissues that developed in culture (calli, roots and leaves) was determined. Prepared slides and tissues obtained in culture were photographed and printed. Callus, root and shoot formation were successful. However, "embryoids" which would have eventually led to free living plantlets were not obtained during this study. Successful regeneration of plantlets in culture would require improved techniques.

Effect Of Event (Acp 1911) On Rough Turf Grasses At Coles County Airport, Illinois, Phena Khanjila Shimaka

Masters Theses

Event is a plant growth regulator that was applied to rough turfgrass at Coles County Airport, Charleston-Mattoon at rates of 0, 8, 10 and 12 ounces per acre. Each of the 12 plots was divided into three sections "mowed", "mowed once" and "unmowed" at application time. The mowed portion was sampled at two week intervals for a six week period and biomass recorded in grams dry weight. Prior to mowing, all the plots were visually observed for broadleaf weeds control, height and seedhead suppression, discolouration and phytotoxicity.

The 12 ounces rate of Event significantly suppressed seedhead production, height, broadleaf weeds …

Determination Of Spring Application Timing And Concentration For Use Of Acp1911 (Event) At Coles County Airport, Illinois, Robert D. Kuhajda Jr.

Masters Theses

A field test was conducted to determine the most effective spring application timing and the most effective concentration for use of American Cyanamid's ACP1911 plant growth regulator. Three different concentrations of ACP 1911, also known as Event, were used for each of five different dates. The field test was conducted on rough turf at Coles County Airport, Illinois, in the spring and summer of 1987.

The dominant grasses in the test site were fescue (Festuca pratensis Huds.) and bluegrass (Poa pratensis L.).

Event was applied at concentrations of six, eight and ten ounces per acre on March 11, …

Cyanogenesis In Dermatocarpon Miniatum (L.) Mann., Daniel Lee Bergman

Masters Theses

The lichen species Dermatocarpon miniatum (L.) Mann. was found to be cyanogenic. This umbilicate lichen, which is common on limestone and sandstone outcrops throughout the United States, is the first lichen to be reported as cyanogenic. This species were examined for cyanogenesis using population from within the confines of Kankakee River State Park, Kankakee and Will Counties, Illinois. Of the nine populations examined six of the population (testing 30 to 150 individuals in each population) were 100% strongly cyanogenic. In the three remaining population cyanogenesis ranged from 67% to 97%. In addition D. miniatum, two other lichen species also …

The Bryophytes Of Kickapoo State Park, Vermilion County, Illinois, Kevin Jon Lyman

Masters Theses

A bryological survey of Kickapoo State Park, Vermilion county, Illinois, revealed a total of 45 bryophyte species. Of these, 42 are mosses and 3 are liverworts. The habitat and frequency for each species were recorded.

As a result of this survey, the following pleurocarpi are reported for the first time in Vermilion County: Amblystegium riparium (Hedw.) BSG, Amblystegium trichopodium (Schultz) Hartm., Amblystegium serpens (Hedw.) BSG var. juratzkanum (Schimp.) Rau & Herv., Thuidium recognitum (Hedw.) Lindb., Brachythecium rivulare BSG, Bryoandersonia illicebra (Hedw.) Robins., Campylium chrysophyllum (Brid.) J. Lange, and Campylium hispidulum (Brid.) Mitt. The following acrocarpi represent new records for Vermilion …