Showing 4 results for Hasani
Kh. Abolhasani, G. Saeidi,
Volume 10, Issue 3 (fall 2006)
Abstract
This experiment was conducted to evaluate drought tolerance of selected lines from local populations of safflower (Carthamus tinctorius L.) at the Research Farm of Isfahan University of Technology in 2002. In this study, the 12 selected safflower lines from different local populations along with two exotic cultivars and a local population were evaluated at two different irrigation regimes, using a randomized complete block design with three replications. The first and second irrigation regimes were based upon the depletion of 50% and 85% of soil moisture content, respectively. The results showed that there were significant differences (p<0.01) among the genotypes for seed yield in both irrigation regimes. Also, the interaction between genotypes and irrigation regimes was significant (p<0.05). Based upon the genotype by environmental interaction analysis (method of Sneller and Dombek), the genotype H27 had the highest tolerance to drought stress, and its seed yield in the first and second irrigation regimes was 3353 and 3072 kg/ha, respectively. The growing variety in Isfahan province (Koseh population) was the most sensitive genotype to the drought stress and had a seed yield of 3525 and 2394 kg/ha in the above irrigation regimes, respectively. The assessment of different water stress indices (SSI, STI, TOL, GMP and MP) revealed that STI seems to be the most suitable index for recognizing the more tolerant genotypes to drought conditions and based on this index, E2428 was the most tolerant genotype, and the exotic cultivar of Ac-Sunset (from Canada) was the most sensitive one. The seed yield for genotype E2428 was 4174 and 3458 kg/ha, and for the genotype Ac-Sunset was 2004 and 1438 kg/ha in the first and second irrigation regimes, respectively.
A Gharehbash, T Ghorchi, S Hasani, N Torbatinejad, H Mansori,
Volume 13, Issue 47 (4-2009)
Abstract
This study was carried out to compare the effects of ewe milk with commercial milk replacer and starter diet with different levels of concentrate on microbial protein synthesis, ruminal fermentation and blood metabolites in the suckling lambs. Thirty Dalagh breed male lambs were separated from their mothers on 3±1 days of age and divided into 6 groups (5 lambs per treatment), and reared in individual cages. Lambs were fed with 6 treatment diets for 90 days age. Treatment diets consisted of 2 fluid feed (ewe milk and milk replacer) and 3 starter diets, 1: 100% concentrate, 2: 67% concentrate and 33% alfalfa hay and 3: 33% concentrate and 67% alfalfa hay. Data were analyzed as a completely randomized design according to 3×2 factorial method. Average of rumen fluid pH, total volatile fatty acids (TVFA), ammonia nitrogen (NH3-N), blood urea nitrogen (BUN), beta hydroxyl butyrate (BHBA), urinary purine derivative excretion (PD), microbial purines (MPD) and microbial nitrogen supply (MN) in lambs fed with ewe milk and milk replacer did not show any significant differences (P>0.05). Average of pH, TVFA (P<0.01), BHBA and MPD, MN were significantly different and higher on lambs fed with starter diet of 100% concentrate than other starter diets (P<0.05). Feeding suckling lambs with all the 3 starter diets affected PD and allantoin to creatinine ratio (P<0.05). This experiment demonstrated that lambs could be reared with milk replacer, without any efeect on microbial protein synthesis, rumen and blood metabolites. Feeding starter diet containing high concentrate to suckling lambs increased microbial protein synthesis and improved rumen and blood metabolites.
S Falahati Por, H Shahsavand Hasani, A Baghizadeh, Gh Karimzadeh,
Volume 13, Issue 48 (7-2009)
Abstract
The genomic in situ hybridization (GISH) has been used to identify euploidy and aneuploidy in segregation generations of various plants. In this study, the GISH with minor modifications including, slide preparation of putative secondary Tritipyrum (F2) root meristemic cells, labeled genomic DNA of Thinopyrum bessarabicum by fluorescein 12-dUTP nucleotide as probe, genomic DNA of Thinopyrum bessarabicum for in situ hybridization on root meristemic cells of F2 (2n=6x=42, AABBDEb) and unlabeled Chinese Spring cultivar in pre hybridization, was carried out for the first time in Iran. The results not only indicated the various Eb chromosomes in putative 6x secondary Tritipyrum plants, but also showed different numbers of A, B and D chromosomes. The range of aneuoploidy in F2 genotypes was from %30 to %66.7, which could be due to various numbers of Eb and D chromosomes in each genotype. The selfing or back crossing of F2 plants with bread wheat varieties could lead to chromosomal stability and aneoploidy reduction in secondary Tritipyrum genotypes.
A. Hasani Nekou, A. Karimi, Gh. Haghnia, M. H. Mahmoudy Gharaie ,
Volume 18, Issue 67 (Spring 2014)
Abstract
The aim of this study was to investigate the effect of parent materials and pedogenic processes on distribution of Pb, Zn, Cu, and Ni in the residual soils derived from different parent materials in the Binaloud zone, western Mashhad. Two soil profiles on the summit of granitic, ultrabasic and metamorphic rocks were described and sampled from their genetic horizons. Pseudototal concentrations of selected heavy metals and fractions of these metals were determined using aqua-regia and sequential extraction methods, respectively. 178.1-419.7 mg kg-1of Ni in ultrabasic soil versus 0.7-27.5 mg kg-1 in the granitic soil make the Ni a distinctive element in the studied area. Cu with the average contents of 60 and 56.3 mg kg-1 in the ultrabasic and metamorphic soils respectively showed more concentration in comparison to granitic soils with 12.1 mg kg-1. The amount of Zn was not significantly different among the soils, although the average of this element in the granitic soil (55 mg kg-1) is slightly more than the other soils. Pb was only detectable in the surface layers of all pedons reaching up to 6 mg kg-1. Residual fraction except Ni and Cu in granitic soil was the main fraction for all of the studied heavy elements that was expectable according to the low weathering intensity of the soils. The eolain addition of gypsum and carbonates have influenced heavy metals concentration, especially in surface horizons. In conclusion, the amount of heavy metals was significantly affected by parent materials and the eolian deposition must be considered as the secondary influencing factor.
