Research Notes : Canada : Linkage tests

Results reported by Buzzell (1974) were not conclusive as to whether or not E3 (daylength response) and Ep (seedcoat peroxidase) are independent or loosely linked. Palmer et al. (1984) has shown that Ep is linked with Frl in linkage group 12. Using F2 plants of \u27Minsoy\u27 x \u27Hark\u27 previously reported (Palmer et al., 1984) for seedcoat peroxidase and root fluorescence, we tested for linkage of E3 with Ep and Frl by testing F3 material for response under a daylength extended to 20 h with cool white fluorescent light

Tropical cyclone and related meteorological data sets available at CSU and their utilization

February, 1982.Includes bibliographical references.This report has been prepared to familiarize the international meteorological community with the comprehensive collection of tropical cyclone and other meteorological data which are available on our research project. We provide a rationale for the research philosophy behind the assembling of these data sets over the last decade, describe the data and indicate how other researchers may use them for their own the research purposes. In particular, we summarize the rawindsonde compositing philosophy and the other research techniques employed on our project. We describe our data processing procedures, the various formulations we have used for different research purposes, the coordinate systems employed and the data availability by region. Our research accomplishments, types of compositing runs, and a list of publications are also presented. These data sets and their software support represent a considerable manpower and financial investment. An investment that is now able (we believe) to provide a high return in the form of new knowledge on tropical cyclones and other weather systems. We are currently exploring a number of exciting avenues. The possibilities are quite broad and we encourage other research workers to help exploit this resource

Research Notes : Greenhouse determination of soybean tolerance to phytophthora rot

One method of determing field tolerance of soybeans to Phytophthora mega-sperma f. sp. glycinea (Hildeb.) Kaun & Erwin (Pmg) is to determine the percent of plant loss from emergence to maturity for cultivars grown in an infested field under conditions favorable for the disease (Buzzell and Anderson, 1982). Drawing upon the field results and the results of two unpublished greenhouse experiments (given below), a greenhouse technique similar to the field test was developed. 1962 Experiment : Cores of soil were obtained from a field known to be in-fested with Pmg race 1, the field having been used in a previous study (Ful-ton et al., 1961)