Forage Seed Quality: Dormancy, Standards and Quarantine

There are many dimensions to the concept of seed quality. Viable seed which will not germinate when provided with all the requirements for germination is dormant. Forage grasses mostly exhibit non-deep physiological dormancy (PD), while physical dormancy (PY) is common in forage legumes where imbibition is prevented by the seed coat’s impermeability to water (hard seed). Methods for breaking PD and PY to allow germination testing and/or crop establishment are discussed. In the seed industry seed quality standards are an important feature of quality assurance and may apply for seed production contracts, seed certification, seed sale and seed importing. Standards for these uses are discussed, with a comment on legislated minimum germination standards which may do little to offer protection to the buyer. Exported seed lots must meet the seed quality standards and phytosanitory/biosecurity requirements of the importing country, but while there is an obvious need to protect against the spread of economically important pests, they should not be used as unnecessary barriers to the seed trade

Resourceful responses: the adaptive research university and the drive to market

Journal ArticleA major challenge for contemporary public research universities is the need to affirm to the public and to the political community that the quality of higher education found at these largely autonomous institutions is of such import that it should be sustained by both public and private support. This challenge is made all the more difficult by the growing reluctance expressed by both state and federal policymakers to fund the university's educational mission at anywhere near the level university officials feel is required to sustain that mission. A further complication is the perception within a growing number of politically influential groups that research universities have largely eluded the beneficial effects of market-driven efficiency

Evaluation of Different Genotypes of Teosinte (\u3cem\u3eEuchlaena mexicana\u3c/em\u3e) For Herbage and Seed Production in Nepal

Teosinte is highly admired by the Nepalese farmers as a summer forage crop. It is also an important crop for milking animals in the tropical world where dairy husbandry is practiced. The only Sirsa cultivar of teosinte currently grown in Nepal takes 8 to 9 months from sowing to seed harvesting, which makes growing this crop difficult for farmers with small land holdings wanting to establish winter crops. Therefore, a diversity study on eighteen teosinte accessions was conducted in CRBD design. Seventeen teosinte accessions imported from CYMMIT Mexico and one locally grown Sirsa were evaluated in order to identify if any of the introduced accessions could perform better than Sirsa in terms of herbage yield, seed yield and time to seed maturity . Out of 17 accessions, 5, 7 and 12 were significantly different from Sirsa with respect to herbage yield, seed yield and maturity. This preliminary result suggests a possible source of material for developing new teosinte varieties, better suited for farmer’s need, particularly to reduce the length of time required to grow a seed crop in Nepal

Aboriginal Digital Access Project // Unsettling Sex

"A couple of years ago, Vtape’s administrative duo of Deirdre Logue and Chris Gehman saw a need – how to use new on-line delivery technologies to make the work of Indigenous media artists more widely available - and then they hatched a plan to address that gap. The plan was to digitize approximately 500 Canadian Aboriginal artworks and documentaries in the Vtape holdings in order to make them conveniently available to programmers, librarians, buyers and curators. With this, the Vtape Aboriginal Digital Access Project (ADAP) came into being. [...] This programme - Unsettling Sex - is the first public outcome of ADAP. [...] Unsettling Sex offers a bracing - and often challenging - view of Indigenous sexualities, in all multiplicities." -- p. 1

The effect of seed moisture content and hot water treatment on carrot seed viability and Alternaria radicina control

Hot water treatment of seeds to control seedborne pathogens is an important tool for organic seed production. Reducing seed moisture content may have the potential to increase carrot (Daucus carota L. var. sativus D.C.) seed tolerance to treatment. Two hot water seed treatment experiments were conducted

The effect of seed moisture content and the duration and temperature of hot water treatment on carrot seed viability and the control of Alternaria Radicina

Hot water treatment of seeds to control seedborne pathogens is an important tool for organic seed production. Reducing seed moisture content may have the potential to increase carrot (Daucus carota L. var. sativus D.C.) seed tolerance to treatment. Two hot water seed treatment experiments were conducted. The first studied the effect of seed moisture content (SMC), treatment temperature and treatment duration on germination. Maximum safe treatment temperature and durations were established at 50°C and 30-40 min. Germination decreased slightly from 68% at 5% SMC to 63% at 20% SMC (LSD 1.2) for all durations. The second experiment studied the effect of initial SMC and treatment durations on infestation of seed by Alternaria radicina and seed germination. Treatment at 50°C for 30 min for all SMC compared to the control resulted in a decrease in A. radicina infestation from 69.2 to 1.7%. Reducing SMC from 20 to 5% for all durations resulted in a small decrease in infestation from 25% to 18% (LSD 1.5). Reducing SMC to 5% prior to hot water treatment may be a commercially viable means of minimising reductions in seed viability and decreasing fungal infestation levels

Disease Control and Plant Growth Promotion of \u3cem\u3e Miscanthus \u3c/em\u3e × \u3cem\u3e giganteus \u3c/em\u3e with \u3cem\u3e Trichoderma \u3c/em\u3e Bio-Inoculants

The second-generation bioenergy crop Miscanthus (Miscanthus × giganteus) is being assessed in New Zealand for its potential to provide shelter on irrigated dairy farms. Miscanthus is a perennial sterile hybrid vegetatively propagated rhizomatous C4 grass and the young rhizomes and roots are prone to infection by soil-borne fungal pathogens (Glynn et al., 2015) which can cause deleterious effects on plant establishment and growth. In Europe, several species of Fusarium such as F. avenaceum, F. culmorum, F. moniliforme and F. oxysporum have been implicated as causal agents of root and rhizome rot (Thinggaard, 1997; Covarelli et al., 2012) leading to poor field establishment of in-vitro propagated Miscanthus plants. When tested for their ability to cause disease of Miscanthus, Rhizoctonia solani (Kuhn) was reported as the most aggressive species among nineteen fungal pathogens of cereal crops (Glynn et al. 2015). In New Zealand, R. solani reduces seedling emergence and plant establishment of several herbage species and the problem may be alleviated through biocontrol using Trichoderma fungi (Kandula et al., 2015). In a glass-house study, the effect of four T. atroviride isolates on growth of tissue culture propagated Miscanthus plants in a soil naturally infested with R. solani was investigated

Panel Discussion On The Management Of Allergies In Geriatric Patients†

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/111236/1/jgs00790.pd

December 2020 School of Graduate Studies Newsletter

Associate Dean\u27s Message Ph.D. In Aviation News Dissertation Defenses MSA News MSOSM News MSUS News Alumni News Equality Matters Scholarly Activity Happy Holidays!https://commons.erau.edu/db-sgs-newletter/1017/thumbnail.jp