Screening Trifolium repens L. and T. pratense L. germplasm for Resistance to Cylindrocladium crotalariae (Loos) Bell & Sobers

Using a greenhouse screening technique, 200 plant introduction Jines of white clover (Trifolium repens L.) and red clover (T. pratense L.) germplasm were evaluated for resistance to cylindrocladium root rot incited by Cyl/11drocladium crotalariae (Loos) Bell & Sobers. In general, white clover germplasm had much higher levels of resistance than red clover. Over 60% of white clover introductions had 30% or greater resistance to cylindrocladium root rot, with 21 % of the lines possessing more than 40% resistant plants. No relationship was found between level of resistance and geographic origin for white clover. Red clover was more susceptible to this fungus with an average percentage resistance of only I 0% and a majority oflines had less than 10% resistance. More germplasm of both species, but particularly of red clover, should be evaluated for response to this pathogen in order to identify other sources of resistance

Characterisation of US Collection of Clover and Special Purpose Legume Germplasm

Systematic collection of forage legume germplasm by the USA from the centers of origin was initiated in the 1890s. Since then over 11 000 accessions of clover and special-purpose legume species have been introduced into the US. These accessions are catalogued and maintained by the National Plant Germplasm System with working collections located at 4 locations in the US. Appropriate passport and evaluation data are available in the US Germplasm Resources Information Network (GRIN). The Clover and Special Purpose Legume Crop Advisory Commitlee is responsible for providing advice to the National Plant Germplasm System on the collection, mnintenance, evaluation and enhancement of these species

Not just the best years of my life: personal growth in higher education

Our conception of product affirmation depicts a product as “sculptor” of the consumer’s ideal self, similar to how a relationship partner can help us achieve our aspirations and goals. We performed two studies to look at the role of higher education as a product in affirming a consumer’s ideal self. We found that product affirmation for undergraduate students and alumni (with the university as the product that affirms the ideal self of the student/alumnus) leads to increases in the experience of various positive emotions, the acquisition of various positive traits, and positive evaluations of the university. Additionally, we found that product affirmation effects were more pronounced and robust in one’s personal ideal-self domain than in one’s professional ideal-self domain. Practical implications, study limitations, and future directions are discussed, as well as preliminary findings from a follow-up experiment using a sample of graduate students

Current trends in communication graduate degrees: Survey of communications, advertising, PR, and IMC graduate programs

© AEJMC 2015. A survey of 61 master’s degree advertising programs reveals significant trends in program titles, curriculum design, course delivery, and students served. The results provide insight for current and planned master’s degree programs as research predicts a continued increase in demand for master’s education over the next decade. Survey results are compared against overall education trends such as the growth of nontraditional students, increase in online education delivery, and the increase of for profit universities

Use of Cross-Species Amplification Markers for Pollen-Medicated Gene Flow Determination in \u3cem\u3eTrifolium Polymorphum\u3c/em\u3e Poiret

The species Trifolium polymorphum Poiret is endemic to Uruguay and is widespread in native grasslands throughout the country. Preliminary observations suggested that the aerial flowers are chasmogamous (open at maturity for potential cross-pollination) while the basal flowers are cleistogamous. Several approaches have been practised to determine the reproductive system of forage legumes by the aid of co-dominant markers (Real et al., 2004; Dalla Rizza et al., 2004). The aim of this study is to explore cross-species amplification as a quick approach to obtain co-dominant markers to study the breeding system of T. polymorphum

Development of Red Clover with High Levels of Resistance to Root-Knot Nematodes

Red clover (Trifolium pratense L.), is grown in many areas of the world, but production in subtropical regions may be limited by susceptibility to root-knot nematodes (Meloidogyne spp.) (RKN). Selection for early vigor in RKN infested soils resulted in moderate RKN tolerance in ‘Cherokee’. However, improved RKN resistance in red clover was needed. Seven additional cycles of greenhouse selection using Cherokee as a base population developed a population (FLMR7) with high RKN resistance. When FLMR7 was infested with M. arenaria, M. hapla, M. incognita, or M. javanica, numbers of galls and egg masses were lower than on Cherokee or an earlier cycle of selection (FLMR6). The resistance mechanisms appeared to delay and reduce RKN maturation at all life stages, including reduction in number of egg masses per plant. Preliminary evidence suggests that resistance may interact with higher soil temperatures

Molecular Characterization and Tissue Culture Regeneration Ability of the USA \u3ci\u3eArachis Pintoi\u3c/i\u3e (Krap. and Greg.) Germplasm Collection

Arachis pintoi Krap. and Greg. is a herbaceous, perennial legume, exclusively native to Brazil. It is considered a multiple use legume, being grown for forage; ground cover in fruits orchards, forest, and low tillage systems; erosion control; and ornamental purposes. Although several cultivars have been released in different countries, little is known about the genetic diversity of the germplasm stored in world genebanks. Our objective was to characterize and evaluate the genetic diversity of the germplasm of 35 accessions of Arachis pintoi at molecular level using RAPD markers. Concurrently, two tissue culture protocols were evaluated for their organogenesis ability. Further, variation in band profile was analyzed by comparing “Parent Plants” and tissue culture regenerated plants

Tissue Damage and Nutritive Value of Warm-Season Grasses Following a Freeze

Bahiagrass (Paspalum notatum Flugge) is a major forage for livestock in the subtropics of the U.S.A. However, it is subject to freeze damage with minimal winter regrowth, and is generally considered a poor grass for stockpiling due to poor quality of the residue. Bahiagrass genotypes have been found showing a range of leaf freezing tolerance in the in the field (-30 C) (Blount et al., 2001). Other C4 grasses have been reported to have genotype-specific tolerances to below-freezing temperatures ranging from -3 to -100 C (Sakai & Larcher, 1987). This research was begun to try to understand the processes that take place following freeze injury to bahiagrass. Three grasses native to the Midwest, big bluestem (Andropogon gerardii Vitman cv Alamo), Indiangrass (Sorghastrum nutans (L.) Nash cv Lometa), and switchgrass (Panicum virgatum L. cv Kaw) and commonly used for stockpiling were used for comparison

Rhizoma Peanut: More Than a ‘Lucerne’ for Subtropical USA

Rhizoma peanut (Arachis glabrata) was introduced to Florida from South America in the 1930s. Selections \u27Arb\u27 (PI 118457) and \u27Arblick\u27 (PI 262839) were released in the 1960s, but their use was very limited due to slow establishment and low productivity. The University of Florida released \u27Florigraze\u27 (PI 421707) in 1978 and \u27Arbrook\u27 (PI 262817) in 1986. These cultivars produced much higher dry matter yields. Thereafter, rhizoma peanut began to gain commercial acceptance. These cultivars are used throughout the Gulf Coast region of the USA for commercial hay production, pasture, creep grazing, silage, balage, and living mulch (French et al., 1994). It is estimated that circa 8 Kha of rhizoma peanut have been planted (Quesenberry, 1999). \u27Ecoturf\u27 (PI 262840), an A. glabrata introduction that is gaining wide spread acceptance as a low maintenance turf or ornamental, is the latest development with rhizoma peanut breeding at the University of Florida. In 2002, perennial peanut was selected as the Plant of the Year by the Florida Nurserymen and Growers Association. Current estimates are that rhizoma peanut sales (mainly hay, but also includes planting material and ornamental production) exceed $7M USD