M. J. Arvin, Kh. Moslemi, M. Sarchashmepur, B. Karamat, H. Olumi, F. Daneshmand,
Volume 4, Issue 11 (4-2014)
Abstract
Soil accumulation with toxic metals and their transmition into agricultural products as a world problem is ever expanding. Cadmium (Cd) content of soil has increased due to luxury consumption of phosphorous fertilizers application which enters human food chain. In present study which was conducted in college of agriculture, Kerman University in 2010, the effects of chemical treatments namely salicylic (SA) at 0.1mM, silicon (Si) at 5 mM and SA+Si (0.1 mM and 5 mM) was studied on growth and development and cadmium accumulation in potato tubers grown under cadmium stress (0 and 12 mg/kg soil) in a pot experiment, using a factorial experiment with three replications. Compared with control treatment (No Cd), Cd decreased relative water content (RWC), photosynthetic and plant growth parameters. It also increased leaf malondialdehyde (MDA) and Cd accumulation in tubers. All chemical treatments improved plant performance under Cd stress and non-stress conditions and the effect of SA+Si was more pronounced for most recorded parameters. However, under Cd stress, combination of SA+Si increased tuber number (81%) , tuber fresh weight (112%), chlorophylls (50%) and decreased MDA (50%) and Cd accumulation in tubers (85%), relative to corresponding control and therefore, this treatment (SA+Si) can be commercially used to improve plant performance and reduce tuber Cd contents under field conditions.
I. Karamatlo, M. Sharifani, H. Sabouri,
Volume 6, Issue 20 (7-2016)
Abstract
Identification and evaluation of indigenous genotypes of fruit trees are matter of consideration at the first step of the breeding programs. In order to study genetic diversity and to identify promising genotypes, 14 different genotypes of walnut in Minoodasht region in Golestan province (north of Iran) were evaluated. Traits such as nut shape, kernel color, ease of removal of kernel halves, kernel weight, nut length, and nut widths were measured. Correlations between traits were significant at 1% and 5% percent statistical levels in most cases. Application of principal component analysis indicated that 7 main principle components (PCs) explained 91% of the total variance. Cluster analysis based on all traits was drawn; genotypes were divided into 3 groups. Presence of a great degree of variability in fruit characteristics of the studied traits is suggestive of a notable potential of these trees for breeding walnut cultivars
