Antibodies to broad bean polyphenoloxidase (PPO) were used to detect and demonstrate that the PPOs found in several different plants have many similarities in common. Crude extracts from leaves of broad bean, bush bean, lettuce, mung bean, pea, soybean, spinach, tobacco, and tomato contained enzyme which cross-reacted with polyclonal anti-PPO in Ouchterlony double diffusion analysis. The result...

in order to study the effect of vermicompost containing copper oxide and zinc oxide nanoparticles on was beans, in an experiment factorial were done based on a randomized complete block design in three replications. the experiment treatment were as follows: nanoparticles in 4 levels (0, 0.4, 0.8 and 1.2 g/kg weight of substrate), vermicompost in 3 levels (2.5, 5 and 7.5 g/kg-1 weight of substra...

Fusarium equiseti is prevalent in soil and straw mulch in ginseng (Panax ginseng) fields in British Columbia and causes a reddish brown discolouration on ginseng roots. The pathogenicity of two isolates of F. equiseti from ginseng fields to other plant species belonging to different families was evaluated. Mycelial plugs and spore suspensions were used to inoculate seeds and roots in laboratory...

Preparation and characterization of antisera against lettuce (Lactuca sativa L., cv. Grand Rapids) and pea (Pisum sativum L., cv. Alaska) phytochrome is described. These antisera, together with previously obtained antisera against zucchini (Cucurbita pepo L., cv. Black Beauty) and oat (Avena sativa L., cv. Garry) phytochrome, were used to compare by Ouchterlony double immunodiffusion phytochrom...

The delayed light emission decay rate (up to 120~s) and the rise in chlorophyll a fluorescence yield (from 3 to 35 ys) in isolated chloroplasts from several species, following a saturating 10 ns flash, are temperature independent in the CL35"C range. However, delayed light in the 120-340ps range is temperature dependent. Arrhenius plots of the exponential decay constants are: (a) linear for let...

In field trials conducted at four sites in Hawaii, soybean (Glycine max) and bush bean (Phaseolus vulgaris) were either inoculated with homologous rhizobia, fertilized at high rates with urea, or left unamended. Crop phenology was assessed every few days. Rates of biomass and N accumulation and components of yield were measured five times during each crop cycle to assess the extent to which: (i...