twenty accessions of cultivated grass pea (lathyrus sativus l.) and wild species of lathyrus l.collected from western and southern regions of iran were evaluated for their mitotic metaphase chromosomalcharacteristics. all populations comprising 16 populations of cultivated l. sativus and 4 wild populations oflathyrus l. were diploid, 2n=2x=14 chromosomes. there were significant variations among...

BACKGROUND A comparative analysis by using static headspace (HS) and steam distillation (SD) GC-MS of the volatile and the semi-volatile secondary metabolites from leaves of cultivated Majorana syriaca. METHODS The essential oils endogenous to cultivated thyme were isolated and identified by HS-GC-MS technology and compared to those from SD-GC-MS. RESULTS The HS-GC-MS results showed that th...

Alternaria brassicae, a necrotrophic fungal pathogen, causes Alternaria blight, one of the most important diseases of oleiferous Brassica crops. The current study utilized Arabidopsis as a model to decipher the genetic architecture of defense against A. brassicae. Significant phenotypic variation that was largely genetically determined was observed among Arabidopsis accessions in response to pa...

Molecular analysis encouraged discovery of genetic diversity and relationships of cultivated melon (Cucumis melo L.). We sequenced nine inter- and intra-genic regions of the chloroplast genome, about 5500 bp, using 60 melon accessions and six reference accessions of wild species of Cucumis to show intra-specific variation of the chloroplast genome. Sequence polymorphisms were detected among mel...

Narcissus tazetta var. chinensis (N. taz. chi.) accessions collected from the coastal areas of China, Korea, and Japan were compared with lower ranks taz.) Italy to study genetic variations several morphologically similar cultivars available in trade. Sequences internal transcribed spacer (ITS) regions nuclear ribosomal DNA (nrITS) dendrogram chloroplast trnL-IS-trnF intergeneric spacer-gene (c...

Costus pictus, belonging to the family Costaceae, is one of the valuable medicinal plants with its anti-diabetic property. Despite ever-increasing demand from the pharmaceutical industry, this species is being less exploited at molecular level. Hence, an effort has been made in the present study to characterize the 15 accessions of C. pictus collected from different geographical regions of Indi...

yield stability in rosa damascena mill was analyzed as a part of the national project carried out by research institute of forests and rangelands of iran. thirty- five accessions of damask rose (rosa damascena mill.) from various regions were evaluated for performance and stability of flower yield in region of different echological conditions for two years of 2007 and 2008 using a randomized co...

The panicle architecture is a critical determinant of the reproductive success rice plants and has direct impact on grain production. In this study, we evaluated genetic variation parameters in fifteen genotypes compared them with five commonly grown cultivars study area to assess their potential for crop improvement initiatives. selection 15 was based specific criteria, including diversity ori...