جستجوی مقالات مرتبط با کلیدواژه "saline" در نشریات گروه "زراعت"

This experiment was laid out in order to study on effect of irrigation saline water on biochemical characteristics of mutant cotton lines in Isfahan Agricultural and Natural Resources Center, Iran at 2014-2015, by using of split plot arrangement based on complete block design with three replications. Experimental treatments were three irrigation water [4 (as control), 8 and 12 dS m-1] at main plots and three cotton genotypes (LM1673, LM1303 and Shayan) in sub plots. Results showed that the effect of irrigation using saline water on all traits was significant except reducing and non-reducing sugars. Effect of cultivar was significant on starch content and interaction between irrigation using saline water and cultivars was significant on soluble and non-reducing sugars, starch content and carotenoids. Irrigation by 12 dS m-1 saline water, soluble protein and soluble sugars increased as 50% and prolin content increased as 45% rather than control treatment. Proxidase (POX) enzyme activity in irrigation by 8 dS m-1 saline water treatment increased as 50% rather than irrigation by 12 dS m-1 saline water treatment. By increasing of irrigation water salinity, decreased chlorophyll content (40% rather than 8 dS m-1 saline water) and increased relief pigments such as carotenoids (50%) and anthocyanin (23%). In many traits, because of non-significant different amomg genotypes and with regards to high tolerance characteristics of Shayan genotype to salinity can be concluded that LM-1303 and LM-1673 had high tolerance to salinity same to Shayan genotype. With regard to higher soluble sugar, non-reducing sugar and carotenoids in LM-1303 genotype, can be concluded that this genotype had better physiological status under salinity compare to Shayan genotype.

Due to the limited freshwater, farmers have to use exotic water, such as saline water. The aim of the present study is to propose an effective way of how to use saline water for irrigation of forage sorghum in order to save more freshwater in Sistan region To do this, an experiment was performed as a randomized complete block design with six treatments and three replications in experiment field of Zabol University within 2013 spring. Treatments included: control treatment (100 % freshwater), treated with two-thirds of salty, one-half of salty, one-third of salty, 90% salty and 100% salty water. The investigated cropping indices were dry weight of stem, leaf and aerial organs of plant, plant height and leaf area index. The results indicated that one-third treatment was not significantly (p

Salinity is a major environmental stress that drastically affects plant growth and productivity. To achieve optimal crop production in saline regions, the most appropriate, logical choice is growing salt-tolerant varieties best suited for these regions. A two year field study was conducted at two locations on saline soils of Nishabour to investigate the effect of salinity on growth and yield of 20 wheat (Triticum aestivum.L) genotypes. Two salinity levels were imposed on two silt loam soils by irrigating with saline waters. Electerical conductivities of applied waters were 4 and 6-8 d Sm-1. The experimental design was a randomized complete block with three replications. The studied genotypes were Rowshan, Siossons, Falat, 4213, Qods, 4211*, Bezostaya, 4211, Alvand, Gaspard, Cross Shahi, Gaskogn, Marvdasht, Mahdavi, M.V.17, Hirmand, Alamoot, 4209, Cross Arvand and Chamran. Results of combined analysis of variances showed that the effect of year and genotype on grain, straw and biological yields were significant (P<0.01). In site 1, grain yield of line 4211* as a highest yield was 4167 kg ha-1. Rowshan cultivar had the highest straw and biological yields equal to 7833 and 11780 kgha-1 respectively. The lowest grain yield belongned to Falat cultivar (2650 kgha-1). Siossens cultivar had the lowest straw yield (4850 kgha-1).Generally, increase of salinity decreased grain and straw yields but straw yields reduction were less than grain yields. In site 2 Rowshan cultivar had the highest grain, straw and biological yields equal to 3867, 7893 and 11850 kgha-1 respectively. Lowest yields of grain (1567kgha-1), straw (2983kgha-1) and biological (4550kgha-1) yields belonged to Cross Arvand cultivar. According to obtained grain yield it seems that Rowshan and Siossons cultivars and line 4213 in comparison with other cultivars were preferable genotypes in saline condition. Rowshan, Cross Shahi and Alvand were superior cultivars evaluated for straw production in saline condition respectively. There is genetic variation for salinity tolerance in studied wheat cultivars and lines.

In this research, an almond (Prunus amygdalus B.) cultivar (Sahand) and four interspecific hybrid rootstocks (HS314, HS312, HS302 and GF677) of Prunus genus were subjected to the salinity levels of 1.5, 3, 6 and 9 dS m-1. The mixtures of NaCl, Na2SO4, MgSO4 and CaCl2, at ratios of 12/8, 11/1, 10/2 and 20/7 (w/v) were used respectively to prepare saline solutions. Based on the results obtained, salinity had a significant negative effect on leaf chlorophyll content, leaf area and dry and fresh weight of root and shoot. Although leaf proline concentration was increased by increasing salinity levels, but different responses were observed among the genotypes in this respect. Most of plant responses were significant in high concentrations of salinity (6 and 9 dS m-1) and there were no deleterious effects on the plants growth in 1.5 and 3 dS m-1 salinity. The variation of leaf proline was significant in all levels of salinity but increasing of proline in Sahand cultivar was lower than other genotypes and HS302, indicated the highest amount of proline in higher salt stress. Total chlorophyll and chlorophyll b were decreased significantly by increasing salinity level, but there was no significant change in chlorophyll a. Salinity led to the significant differences among genotypes related to K+, Mg2+, Ca2+, Na+ and Cl- concentrations of leaves and roots. Concentration of Mg2+, Cl- and Na+ and Na+/K+ ratio in leaves of all genotypes were enhanced by salinity stress, whereas it had not significant effect on Ca2+, K+ concentrations and Na+/ Ca2+ ratio. According to measured parameters, HS314 and GF677 were relatively salinity tolerant than others genotypes.