Eight species of the genus Cercospora from different localities in Northern provinces of Iran were obtained and examined during spring-autumn 2010. Cercospora acnidae (from Amaranthus chlorostachys var. chlorostachys), C. beticola (from Beta vulgaris), C. iridis (from Iris sp.), C. lactucae-sativae (from Lactuca sativa), C. mercurialis (from Mercurialis annua), C. sorghi (from Sorghum halepense...

Weedy Amaranthus species frequently cause economically significant reductions in crop yields. Accurate identification of Amaranthus species is important for efficient weed control, but Amaranthus species can interbreed, which might cause difficulty when identifying hybrid-derived specimens. To determine which of several economically important weedy Amaranthus species are most genetically simila...

during autumn and summer 2010 observed species from amaranthus genus were studied in segetal and ruderal environments of hamedan city. in this research, 100 plats randomly were selected and totally 6 species from amaranthus were identified as neophyte wild elements: a. retroflexus l. a. lividus l., a. chlorostachys willd, a. albus l., a. viridus l. and a. blitoides s. watson. dispersal of menti...

A previously unknown glyphosate resistance mechanism, amplification of the 5-enolpyruvyl shikimate-3-phosphate synthase gene, was recently reported in Amaranthus palmeri. This evolved mechanism could introgress to other weedy Amaranthus species through interspecific hybridization, representing an avenue for acquisition of a novel adaptive trait. The objective of this study was to evaluate the p...

In the present study, the chromosomes numbers were confirmed, 2n = 34 for Amaranthus cruentus Linnaeus, 1759, and 2n = 32 for Amaranthus hypochondriacus Linnaeus, 1753, Amaranthus mantegazzianus Passer, 1864, and Amaranthus caudatus Linnaeus, 1753. The distribution and variability of constitutive heterochromatin were detailed using DAPI-CMA3 banding technique. The position of the nucleolus orga...

Plant defensive metabolite Alkaloid were screened for analyzing their antimicrobial property. The present study quantified the alkaloids present in selected members of tribe Amarantheae. Maximum percentage of alkaloids are shown by Amaranthus tricolor L., Aamaranthus viridis L. and Amaranthus caudatus L. (88.8%) and the least were shown by Amaranthus spinosus L. and Amaranthus dubius Mart. (5.8...