• List of Articles common wheat

      • Open Access Article

        1 - Recognition the effective traits on grain yield of bread wheat genotypes under heat stress and non-stress conditions
        Hossein Ali Fallahi atefeh kaviani charati Abbas ali Andarkhor
        To determine the traits affecting grain yield, 10 bread wheat genotypes including Morvarid and Kohdasht cultivars and Lines of N-87-4, N-87-9, N-86-6, N-86-8, N-80-19, N-86-5, N-85-5 and Line 17 were planted in two separate experiments including environmental condition More
        To determine the traits affecting grain yield, 10 bread wheat genotypes including Morvarid and Kohdasht cultivars and Lines of N-87-4, N-87-9, N-86-6, N-86-8, N-80-19, N-86-5, N-85-5 and Line 17 were planted in two separate experiments including environmental conditions without heat stress in 15 December, and heat stress conditions of 10 February in Gonbad Kavous Agricultural Research Station during 2011-2012. Genotypes were compared in a randomized complete block design with three replications andwith combined analysis. Interaction of heat stress and genotypes were significant for grain yield, spike length, number of fertile spike. Genotypes and heat stress effect in all recorded traits were significant. In both conditions, grain yield had a positive and significant correlation with number of fertile spikes. Stepwise regression showed that the number of fertile spikes in normal conditions 99.8% and in heat stress 97.1% of grain yield changes were explained. The path analysis showed that the number of fertile spike had the most direct effect on grain yield in both conditions. The cluster analysis categorized genotypes into two group in normal conditions and three groups in heat stress conditions. Therefore, the number of fertile spikes can be used indirectly in the selection of genotypes with high yield in both heat and normal conditions. Manuscript profile
      • Open Access Article

        2 - Relationship of some agronomic traits affecting grain yield in bread wheat recombinant lines under salinity stress conditions
        Sajad Soori Amin Baghizadeh Ghasem Mohammadi-nejad
        Soil salinity is one of the abiotic stresses and a major problem to have a high yield in wheat. To awareness of relationship between agronomic traits and grain yield in salinity and to determine the traits affecting yield and tolerance to salinity, the Correlations coef More
        Soil salinity is one of the abiotic stresses and a major problem to have a high yield in wheat. To awareness of relationship between agronomic traits and grain yield in salinity and to determine the traits affecting yield and tolerance to salinity, the Correlations coefficients of different traits and path analysis of grain yield in salinity conditions were investigated. 322 recombinant inbred lines of wheat derived from crosses Roshan and Falat with parents were evaluated in simple lattice design 18 x 18 with two replications. The Experiment was conducted in the 2013-14 crop season at a farm in Ekhteiar Abad in Kerman with EC = 12 ds/m. The simple correlation coefficient among grain yield and the most of evaluated traits had significant positive correlation. The total weight of spikes per plant had the highest positive correlation and significantly with yield. Stepwise multiple regression analysis method showed that the total weight of spikes per plant, harvest index, biological yield and Number of fertile tillers were the most effect on grain yield. Path analysis based on variables in the final stepwise regression analysis showed that biological yield and harvest index had high direct effect on grain yield. Line number 56 having a higher yield than the parents and the other lines was selected as the best genotype in studied conditions. Manuscript profile
      • Open Access Article

        3 - Evaluation of salinity toleranceindices in some bread wheat genotypes at seedling stage
        Sepideh Biriyay Manouchehr Khodarahmi Davood Habibi
        To evaluate of salinity tolerance indices in 17 commercial cultivars and 34 lines ofbread wheat against salinity of sodium NaCl, an experiment was conducted in growing season of 2012 in factorial experiment based on randomized complete block with two replications and in More
        To evaluate of salinity tolerance indices in 17 commercial cultivars and 34 lines ofbread wheat against salinity of sodium NaCl, an experiment was conducted in growing season of 2012 in factorial experiment based on randomized complete block with two replications and in salt concentration of 0, 8 and 16 ds m in the greenhouse. In this study, total plant dry weight was measured. To assess the salt tolerance of genotypes stress susceptibility (SSI), tolerance (TOL), stress tolerance (STI), geometric mean productivity(GMP) and the mean productivity (MP) indices were used. In this study, regarding to the indices of MP, GMP and STI, Farahan 4452, Saruq 4468, Trfan4678, Parsi, Rezaieh 2745 and Nishapur genotypes identified to have the highest yield in both control and salt stress conditions. Therefore, they can be used in salineandnon-salineoruncertain areas, also because they had highbiologicalyield. On the other hand, it was observed that Roshan, MV-17, 22762, Zarea, 22919, Azerbaijan 2664 and Mahabad 1856genotypeshad the lowest rate of TOL and SSI indicesandthey can be grown in saline areasbecauseof having highbiological yieldin stress condition. Manuscript profile
      • Open Access Article

        4 - Determining the effective traits on bread wheat genotypes grain yield under drought stress and non-stress conditions
        Babak Hooshmandi
        To determine effective factors on grain yield under drought stress and non stress conditions at the end of the season, 15 bread wheat genotypes were examined as two separated experiments in Research Center of Faculty of Agriculture in Islamic Azad University, Tabriz Bra More
        To determine effective factors on grain yield under drought stress and non stress conditions at the end of the season, 15 bread wheat genotypes were examined as two separated experiments in Research Center of Faculty of Agriculture in Islamic Azad University, Tabriz Branch during 2012-2013. The cultivars were compared based on completely random block design with three replications. All studied traits were significant and there was frequent diversity among studied genotypes in the studied traits in both experimental conditions. The grain yield under non stress and stress conditions were 2.8 and 2.23 ha, respectively and drought stress had the most effect. The correlation coefficients among grain yield, biologic yield and harvest index were positive and significant in both experimental conditions and also grain yield under without stress showed a positive and significant correlation with number of spikelets per spike under stress conditions with spike length. According to stepwise regression under without stress conditions, number of spikelets per spike determined 40% of the grain yield changes. Also, in non stress conditions number of spikelets per spike and in stress condition spike length, plant height and pollination were most effective on grain yield and justified variation in grain yield and also genotype 14 showed higher yield relative to other genotypes in both experimental conditions. Manuscript profile