The number of isoperoxidases and the intensity of certain isozymes increased with increasing periods of stratification of pear (Pyrus communis cv. Bartlett) embryos. The presence of GA(3) or kinetin during stratification enhanced the activity of certain isoperoxidases, and these enhancements were blocked in the presence of ABA which by itself had an inhibitory effect. Enhancement in isoperoxida...

Development, imaginal survivorship, adult longevity and fecundity of the predatory phytoseiid mite Euseius (Amblyseius) finlandicus Oudemans reared on seven different plant pollens were determined in the laboratory. The rationale behind these experiments was to assess the nutritional value and the possible effect on development and population dynamics of the mite. Mites were kept individually o...

The presence of fungal and bacterial contamination in vitro propagation is a determinant the culture establishment. biocide PPM (Plant Preservative Mixture™) has been utilized to control contamination. According manufacture’s label, it heat-stable, broad-spectrum product, non-selective, that affects directly microorganisms without causing damage plant cells. purpose this study was evaluate infl...