JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY)
Year:2012 | Volume:11 | Issue:4|Papers Count:9

Four Branchinecta orientalis populations from different parts of West Azarbaijan were compared using morphometric and ecological characteristics. Filed studies showed that, B. orientalis widely distributed in the lagoons around the Urmia Lake and also Northern regions of province. The discriminant function analysis based on morphological characteristics (12 in female and 10 male) measurements showed that there are significant differences between the studied populations, where 96 % of males, 91 % of females and cumulatively 85.3% of original grouped cases were correctly classified. As a general result, it may be concluded that discriminant function analysis using male morphological characters is a powerful tool in discrimination of populations under study.

The genus Salvia is morphlogically investigated to provide an identification key based on morphological characters in the Northeast of Iran. In this study, we examined more than 350 herbarium and collected specimens of different populations and measured 79 quantitative and qualitative (vegetative and generative) characters. The results of the multivariate analysis (principal component analysis) and Nonparametric Test (K independent samples) indicate that the morphological characters such as blossom shape, ring of trichome inside of corolla and protrusion style differentiated the Salvia species. For the first time, the species Salvia shariffi is reported in the Jonoubi and Shomali Khorassans.

In this study pollen morphology of 8 species of Alyssum (sec. Gamosepalum( from two connate and libera series was studied by using the light microscope. this characters were seen in all species: the general type of pollen was tricolpate. the shape of pollen was prolate, in polar and equatorial view was spheroidal, enlarge respectively.quantitative characters such as Polar axis(P), Equatorial axis(E) and P/E was very different between species. In sum three groups in section was determined. On the base of this research taxonimy of sec. Gamosepalum was confirmed and libera divided to two stellate and lepidote subseries.

In this study, the effects of semen ion ratios on spermatological parameters and pH in carp were evaluated. The Spermatological and biochemical parameters from 14 males fish in the laboratory by microcentrifuge, stereomicroscope, spectrophotometer, flame photometer and ph meter were measured. Na+/K+, Na+/Ca2+, Na+/Mg2+, K+/Ca2+, K+/Mg2+ and Ca2+/Mg2+ ion ratios of each treatment were divided into three groups. The results of this study showed that sperm quality increased with increasing of Na+/K+ but decreased with increasing of Na+/ Ca2+, K+/ Mg2+ and K+/Ca2+. Also, change of ion ratios Ca2+/Mg2+ and Na+/Mg2+ has no influence on sperm quality. The refore, it can be concluded that ion ratios are effective in increase or decrease of sperm quality.

Some of ruderal and segetal areas inside of Hamedan city and its suburb (in a radius of 2o km) involving some of farms, gardens, green spaces, waste lands and also margin of terrific regions (streets and superhighways) were compared based on ecological-floristically view in relation to presence and dispersal of Heliotropium genus between 2010 -2011. This genus with 74 species is introduced as one of the Boraginaceae family genus for Iran, which have many species. Heliotropium europaeum L and Heliotropium noëanum Boiss. have been already observed in inside of Hamedan city and its suburb. Extensive dispersal of H. europaeum L. species with H 4, 5, 6 hemeroby degrees as an segetal-ruderal neophyte element, in humid areas (such as gardens, left farm lands, beside roads) and also in dry regions (such as between pavings and asphalts clef, beside of walls and etc.) indicates high adaptation of this species with many ruderal biotops inside of Hamedan city and its suburb. H. noëanum Boiss. with H4 hemeroby degree, was observed limitedly and only in one urban site and also in a few number in its suburb.

Maternal alcohol abuse causes abnormal fetal development, a condition called fetal alcohol syndrome (FAS). Hydrocephalus is one of the main features accompanying this condition. The early sign of hydrocephalus in the fetal period is ventricolumegaly, followed by reduction in the cortex thickness. In this research hydrocephaly and its effect during ethanol exposure was investigated .To inducing FAS, pregnant Wistar rats were fed with 5) %w/v (liquid alcoholic diet from day 8 of pregnancy to delivery. Embryos of E18 and E19 days were decapitated and brains were removed and sectioned and stained by H&E and immunohistochemistry. The analysis of the brain sections revealed significant decrease (p).