ABSTRACT Crown rust (Puccinia coronata) in indigenous populations of Avena sterilis has been cited as an example of stability of wild pathosystems that consist of natural mixtures of resistance and virulence. This study confirmed that virulence/avirulence polymorphisms in P. coronata on A. sterilis in Israel are highly diverse and that super races do not dominate. Isolates of P. coronata from I...

Lead is one of the most dangerous pollutants to both environment and humans. It causes structural changes in photosynthetic apparatus reduced biosynthesis chlorophyll pigments inhibits carbon metabolism. The aim our study was determine dynamics leaves wheat (Triticum durum T. aestivum), barley (Hordeum vulgare) oats (Avena sativa) at different lead acetate, Pb(CH3COO)2 levels: 0, 0.15, 0.30 0.6...

Low-external-input (LEI) cropping systems that include forage legumes and small grains in addition to corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] can achieve similar or higher crop productivity and economic return than conventional corn-soybean rotations. We hypothesized that this rotation effect occurs regardless of the crop genotype planted and the herbicide and cultivation regime...

The inhibitory effects of Avena sativa L. seed extract were studied on life history and some physiological aspects of Sitotroga cerealella (Olivier; Lepidoptera: Gelechiidae). The inhibition of α-amylase activity in vitro by A. sativa proteinaceous extract suggested its potential antimetabolic effect on S. cerealella larvae. Although, chronic ingestion of A. sativa inhibitor (I10: 0.108 mg prot...

Endogenous levels of cyclic adenosine-3':5'-monophosphate in coleoptile first leaf segments of oat (Avena sativa L.), potato (Solanum tuberosum L.) tubers, tobacco (Nicotiana tabacum L.) callus, and germinating seeds of lettuce (Lactuca sativa L.) were measured with a modified Gilman binding assay and a protein kinase activation assay. The incorporation of adenosine-8-(14)C into compounds with ...

Introducción. Utilizar ensilaje de avena forrajera (Avena sativa L.) en la ganadería leche épocas deficitarias alimento, permite mitigar pérdidas biomasa por sequía el trópico alto colombiano. Objetivos. 1) Determinar rendimiento materia seca (RMS) cinco genotipos y estabilidad fenotípica calidad bromatológica su ensilaje, 2) evaluar inclusión del genotipo AV25-T dietas para ganado lechero. Mat...