the effects of salicylic acid (sa) and putrescine (put), on cut narcissus was studied. sa (0, 100 and 200 mg l-1) and put (0, 150 and 300 mg l-1), their combinations were tested as preservative mixture. this study was conducted in a factorial experiment with complete randomized design on 108 narcissus cut flowers in horticulture laboratory of agriculture faculty of islamic azad university, jiro...

A comparative study of the lectins from the families Amaryllidaceae and Alliaceae reveals many common features: all bind D-mannose exclusively and have similar molecular structures and amino acid compositions. All these lectins contain subunits of M, 11500-14000 which are not linked by disulphide bonds and occur as dimers (in Allium sativum, A. vineale, A. ursinum, A. moly, Narcissus pseudonarc...

The genus Narcissus belongs to the family Amaryllidaceae. This has been subject of numerous cytological and cytometric studies have shown enormous variation in terms genome size, ploidy level, even basic chromosome number. numbers are 5 or 7, but 10, 11, 12 recorded as well. Most narcissus cultivars euploid tetraploids. There also triploids. Some aneuploid such tetraploids triploids, with missi...

Antimicrobial activity and cytotoxicity of fifty one extracts of different parts of 14 plants were studied. Ethanol, methanol, aqueous, butanol, and n-hexane extracts were tested against three gram negative, two gram positive bacteria, and two fungi. Cytotoxicity and phytochemical screening were determined using MTT and TLC assays, respectively. Of the fifty one extracts, twenty two showed acti...

The nucleotide sequence of the genomic RNA of narcissus mosaic virus (NMV) was deduced from a set of cDNA clones and by direct sequencing of RNA. The genome, with a length of 6955 nucleotides [excluding the 3'poly(A) tail], contains six open reading frames (ORFs) with the capacity to code for polypeptides of more than 10K, with Mr values of 186284, 25845, 13998, 11059, 26097 and 10519. The firs...

Abstract The color of flowers is one the main characteristics adopted for plants to attract pollinators ensure reproductive success plant, they are also important in their ornamental appeal Narcissus plant. In this study, we identified a NtMYB12 locus encoding an R2R3-MYB transcription factor. Comparative transcriptome analysis loss- and gain- tissue relative wild-type narcissus showed was main...