Light induced an alkalinization and stimulated a subsequent acidification of the medium surrounding oat (Avena sativa L. cv Garry) leaf protoplasts. Blue light was less effective than would be predicted from photosynthetic action spectra. Nonetheless, 3-(3,4-dichlorophenyl)-1,1-dimethylurea prevented alkalinization and reduced acidification to the dark rate for protoplast suspensions exposed to...

A large fraction of the genomes of grasses, members of the family Graminae, is composed of retrotransposons. These elements resemble animal retroviruses in their structure and possess a life cycle similar to theirs that includes transcription, translation, and integration of daughter copies. We have investigated if retrotransposons are generally transcribed in the grasses and other plants, and ...

Effects of land-use management on agricultural sustainability and greenhouse gas emissions are major issues for researchers, regional councils and farmers in New Zealand. This study was undertaken to investigate the environmental impact of land-use management on field-CO2 emissions in Ohakea silt loam soil (Typic andoaqualf) that had been converted from permanent pasture to forage cropping for ...

La sustentabilidad de los ambientes agrícolas en la región pampeana húmeda argentina es afectada por el monocultivo soja (Glycine max (L.) Merr.). baja eficiencia uso recursos del ambiente durante barbechos y su efecto negativo sobre sostenibilidad productividad sistemas producción hace necesaria adopción prácticas tales como inclusión un cultivo cobertura (CC) invernal entre cultivos renta esti...

El presente estudio tuvo como objetivo desarrollar el proceso de galletería sin gluten, utilizando materia prima principal la avena, miel abeja y quinua, las mismas que fueron parte recetas en variedades sucreé, briseé sablée. La metodología fue experimental, con diferentes tratamientos para poder identificar mejor forma aplicar formulación, los resultados pudieron desarrollarse manera bastante...

The uptake of mercury vapor by six gramineous plant species was compared under uniform conditions using a whole-plant chamber and (203)Hg-labeled mercury at a low atmospheric concentration. Mean Hg uptake by leaves of the C(3) species oats (Avena sativa), barley (Hordeum vulgare), and wheat (Triticum aestivum) was 5 times greater than that by leaves of the C(4) species corn (Zea mays), sorghum ...

Se discuten ciertos datos taxonómicos y corológicos de nueve taxones gramíneas (Poaceae) los géneros Anthoxanthum, Arrhenatherum, Avena Helictochloa publicados recientemente en relación con la flora Extremadura (España).

DNA samples from 980 plants of Avena barbata from 48 ecologically diverse sites in California and Oregon were assayed to determine their genotype for two duplicated loci governing rDNA variants. More than 40 different rDNA genotypes were observed among which 5 made up 96% of our sample in environmentally homogeneous sites; predominant genotypes were less frequent and recombinant genotypes were ...

This study was undertaken to evaluate natural mulches for weed control in organic onion (Allium cepa) production where current practices rely on hand-weeding or plastic mulch. Three experiments were conducted over 2 years, with two experiments conducted on-farm in different years and one experiment conducted on-station. Treatments consisted of hand-weeding or mulches of wheat (Triticum aestivum...