Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
Development Of Multiple Pest Resistant Crop Cultivars, Elvis A. Heinrichs
Development Of Multiple Pest Resistant Crop Cultivars, Elvis A. Heinrichs
Department of Entomology: Faculty Publications
Insects are one, among a number, of biotic and abiotic constraints that limit the production of food crops. Entomologists can play a key role in increasing food production through the development of insect-resistant crop cultivars. Resistant cultivars are sought as a major tactic in the development of IPM strategies and have been shown to be compatible with biological, chemical and cultural control tactics. There has been significant progress in the breeding and commercial utilization of multiple pest resistant crop cultivars having resistance to insects, diseases and nematodes. The most notable examples are rice cultivars which are grown on millions of …
Stratospheric Ozone Reduction, Solar Uv-B Radiation And Terrestrial Ecosystems, Martyn M. Caldwell, Stephan D. Flint
Stratospheric Ozone Reduction, Solar Uv-B Radiation And Terrestrial Ecosystems, Martyn M. Caldwell, Stephan D. Flint
Green Canyon Environmental Research Area, Logan Utah
Stratospheric ozone reduction is occurring and will continue to increase in magnitude into the next century. Yet, the consequences for terrestrial ecosystems of the increased solar W-B (280-320 nm) radiation resulting from total column ozone reduction are not understood. Based on studies of higher plant response to UV-B, several possible consequences for ecosystems include decreased primary production, altered plant species composition, and altered secondary chemistry with implications for herbivory, litter decomposition and biogeochemical cycles. However, like the assessment of increased atmospheric CO2, extrapolation from studies with isolated plants to ecosystem function is very tenuous at best. Very few UV-B studies …