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Articles by M. Meskarbashee
Total Records ( 4 ) for M. Meskarbashee
  M. Nabipour , M. Meskarbashee and S. Farzad
  Water and soil salinity concentration are important for decreases in the yield of a wide variety of crops in many parts of the word. In addition to evaluation of plant tolerant and toxic ion effects in saline condition, concentration of Na+ and K+ ions in different part of plant (e.g., wheat) is very important. Results showed that, biological yield or dry matter accumulation in Leaves, stem, root, spike, number of fertile tiller and grain yield per tiller seed decreased with increasing salinity. Also, by increasing salinity, Sodium content of Leaf, stem, root, spike and seed increased but potassium content decreased. In high salinity Level, Kharchia and Bangor cultivars showed minimum sodium and maximum potassium accumulation, while in different parts of Chamran Cultivar potassium and sodium were minimum and maximum respectively. In Chamran cv. Sodium content decreased in root, against the increased sodium content in shoot. High Na+ concentration strongly inhibited uptake and accumulation of K+ by root and induced a reduction in K+ grain. Yield analysis showed that there was significant difference between all salinity treatments. Seed weight had significant reduction with increasing salinity. Results indicated that Kharchia and Bangor cultivars were more tolerant to salinity than Chamran cultivar.
  V. Atlassi Pak , M. Nabipour and M. Meskarbashee
  In order to investigate the effect of salt stress on chlorophyll content and fluorescence, sodium (Na+) and potassium (K+) ions content of rape (Brassica napus L.) plants, ten genotypes were subjected to salinity levels (control [2.5], 6, 10, 14 and 18 dS m-1) for 30 days in hydroponics. Salt treatments were imposed to genotypes in root establishment stage (4 leaves). Results showed that quantum yield of photosystem II from light adapted (ΦPSII) and dark-adapted leaf (Fv/Fm), photochemical quenching (qP) and minimal fluorescence from dark-adapted leaf (Fo) were affected by salinity. Genotypes MHA4921 and Hyola 401 had highest shoot dry weight at the two higher salt treatments (14 and 18 dS m-1) and resulted the most tolerant to salinity among the tested genotypes. Chlorophyll (chl) fluorescence attributes was generally affected by salinity stress, except in the two salt tolerant genotypes and thus could be used as a tool for screening for salinity tolerance. Chlorophyll content (SPAD units) changed significantly in all genotypes, except in salt tolerant ones. Shoots Na+ content increased, by increasing salinity levels, but in MHA4921 this increase was higher than the other genotypes and may be relation to decline in the osmotic potential of cellular contents. Rape ability to accumulate sodium in response to salinity is one of the major criteria of salt tolerance. K+ content in shoots, at the different levels of salinity in MHA4921 and Hyola 401 were higher than the other genotypes.
  E. Mafakher , M. Meskarbashee , P. Hassibi and M.R. Mashayekhi
  This study was carried out to determine chemical composition and quality characteristics of corn and sunflower ensiled alone and the mixtures (fresh matter basis) of corn and sunflower at differing rates included 75% corn plus 25% sunflower (C75S25), 50% corn plus 50% sunflower (C50S50), 25% corn plus 75% sunflower (C25S75). Whole corn and sunflower plants were chopped at milk-dough seed stage and ensiled in plastic jars for 45 days. At this experiment, forage characteristics of corn and sunflower plants pre ensiling and dry matter, crude protein, crude fiber, ash, pH, flieg point and physical characteristics (smell, structure and color) of silages were measured. Corn and sunflower plants had significantly differences in terms of dry and fresh forage yield, dry matter, crude protein, total water soluble sugars and starch amount. Among the silages, highest crude protein (12.87%), ash (16.5%) and pH value (4.3) were determined from sunflower silage alone (p<0.01) and declined in the mixtures with increasing levels of corn in silage. While, flieg point (103.01) was greater in corn silage alone. In addition mixing corn and sunflower forage in silo improved silage feeding value and best mixing was 50% corn plus 50% sunflower.
  M. Nabipour , M. Meskarbashee and H. Yousefpour
  The aim of this study carried out in Shahid Chamran Ahwaz, University, in 2001-2002 to determine the effect of different forms of irrigation on the safflower (Carthamus tinctorius L.) yield and yield components. Information was needed on application time of irrigation water on cultivars of safflower (Carthamus tinctorius L.). Increasing competition for water supplies and rising costs of applying water make efficient irrigation important. Yield and water use of safflower were evaluated on silt loam soil. Deficit irrigation treatments; I1: normal irrigation, I2: cutoff irrigation in budding period, I3: cutoff irrigation in flowering period (blooming), I4: cutoff irrigation in maturity period, were examined in Randomized Complete Block Design (RCB) with three replications. In this field experiment irrigation regimes were the main plots and cvs (ARAK 28, ESFAHAN LOCALITY and FO2 cvs) were as sub plots. The plant height, the plant head number, the 1000 seed weight¸and the seed yield were measured in this experiment. The different irrigation regimes had a significant effects (p<0.05) on the seed, the crude oil yields (kg ha-1), seed number per boll, harvest index, total dry weight. The highest seed yield (2679 kg seed ha-1 in cv. ESFAHAN Lo.) and the crude oil yield (855 kg oil ha-1 in cv. ARAK) were obtained from the I1 irrigation regime. I3 gave the lowest seed yield (1499 kg seed ha-1 in cv. FO2) and the crude oil yield (449 kg oil ha-1 in cv. FO2). I1 gave the highest oil percentage (35% in ARAK cv.) and the lowest (27.4% in FO2 cv.) obtained in I4. The different between cvs were significant in number of boll per plant, number of seed per boll, the 1000 seed, high, number of branch per plant, seed yield (kg ha-1), crude oil yield and total dry weight.
 
 
 
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