We assayed the in vivo activity of the ureases of soybean (Glycine max) embryos by genetically eliminating the abundant embryo-specific urease, the ubiquitous urease, or a background urease. Mutant embryos accumulated urea (250-fold over progenitor) only when lacking all three ureases and only when developed on plants lacking the ubiquitous urease. Thus, embryo urea is generated in maternal tis...

Highlights SVRice package: a simple and effective procedure for automatic rice seed vigor classification was verified. The package consists of three important parts: image analysis, curve-fitting, cluster analysis. Findings provide an system that promises to reduce the production costs. Abstract. Rice is storage management by producers farmers while planning their cultivation activities. Field ...

The forces required to puncture intact lettuce (Lactuca sativa) seed and pericarp, endosperm and embryo were measured by the Instron Universal Testing Machine. It required about 0.6 newton to puncture the endosperm in seeds imbibed in the dark at 6, 12 and 24 hours. Endosperm of seeds imbibed in the light or in dark with gibberellic acid required about 4.2 newtons at 6 and at 12 hours and only ...

The configurations of aliphatic substances containing in their molecules several secondary alcoholic groups, or one or more secondary alcoholic groups in addition to a polar radicle as -COOH, -CHO, or = C =O, have been correlated to a single reference substance, lactic acid. Nothing is known, however, regarding the stereochemical relationships of simple secondary alcohols to the same substance ...

The polyether antibiotic maduramicin and its methyl ester derivative inhibited photophosphorylation and proton uptake in isolated spinach chloroplasts. Both compounds also enhanced basal and phosphorylating electron transport and stimulated Mg(2+)-dependent ATPase activity, therefore, they behave as uncouplers of photophosphorylation being the methyl ester derivative more potent than the parent...

In order to evaluate effect of salinity on germination and early seedling growth of lentils a laboratory experiment was conducted at Biotech Research Center of the University of Zabol, in 2011. The experimental design was a completely randomized with five NaCl solution, together with seven replicates. The seeds were germinated in Petri dishes, on with 10 mL of either double-distilled water (con...