List of Articles stress tolerance index

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Effect of potassium sulfate on chlorophyll and drought toleranceindexin the Mungbean genotypes in the north of Khuzestan Province
  Naser Zarifinia hossein farzadi mohammad khoramian
  In order to evaluate the effect of potassium sulfate nutrition on chlorophyll contentand drought tolerance indexon Mungbean genotypes in the north of Khuzestan Province, this study was conducted in split plot factorial in a randomized complete block design with three re More

  In order to evaluate the effect of potassium sulfate nutrition on chlorophyll contentand drought tolerance indexon Mungbean genotypes in the north of Khuzestan Province, this study was conducted in split plot factorial in a randomized complete block design with three replications in 1390 and 1391 at the agricultural Research center south of west Country (Safiabad). The main plot was irrigation after 120, 180 and 240 mm evaporation from pan evaporation (respectively marked I120, I180 and I240),and the subplots were potassium fertilizers with 0, 37.5 and 75 kg K2O per hectarfrom potassium sulfate(respectively marked F0,F1 and F2) and genotypes (Parto, Hindi and VC6173, Cn95 and KPS1lines ) in a factorial arrangement.The results showed that grain yield in I180 and I240 treatments, reduced 21.8 and 30.4 percent respectively in comparison with control treatment(I120).the highest and lowest tolerance to drought stress were allocated to Hindi (0.83) and KPS1 (0.47) respectively. Potassium application at the rate of 75 kg/ha in I240 treatment, increased drought tolerance in all genotypes except KPS1. chlorophyllcontent was influenced irrigation regimes, irrigation and genotype, irrigation-fertilizer as well as the interaction of three factors at the of 1% and fertilizer and genotypes at the level of 5%.The overall results showed that Hindi due to high drought tolerance and VC6173 due to shoot standing and high drought tolerance were superior to other varities. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Evaluation of 38 varieties of bread wheat in heat stress tolerance is calculated based on the season of the untamed STI farm
  seyed saeed sayahi Fatemeh Komaei
  To evaluate different bread wheat cultivar in the Heat of the end of the season, agricultural experiment in the veys area 10 km East of Ahvaz, split plot in randomized complete design with 4 repeat was conducted. The main factor of this experiment include, good planting More

  To evaluate different bread wheat cultivar in the Heat of the end of the season, agricultural experiment in the veys area 10 km East of Ahvaz, split plot in randomized complete design with 4 repeat was conducted. The main factor of this experiment include, good planting date (15 azarmah) and delay the planting (20 deymah) and the sub factor of this test, genotypes (38 pcs) where considered.Delay Planting date was considered the plant will end with the heat of season. In this experiment yield and yield component, the STI tolerance index was also estimated by Fernandez as a criterion for measuring end-season heat stress tolerance in 38 genotypes. Varieties of Chamran, bayat, and also Arvand Rud has the highest STI in among 38 genotypes to studied. Varieties of Chamran, bayat, Arvand Rud, virginia, plateau and-78-11 genotypes bearing the name of thermal stress. Other genotypes where evaluated according to stress tolerance index and previous report result sensitive genotypes were called. Totally in Khuzestan provinceIf the selection of suitable varieties and possibility of optimal agriculture processing are carried out. Can be cultivated with tolerance varieties, while maintaining high performance, it improves the sustainability of production. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - Evaluation of end season drought stress tolerance indices to identify tolerant genotypes of faba bean (Vicia faba L.)
  Fateme SHeikh Faramarz Seyedi
   Drought stress has reduced the yield and cultivated area of faba bean in many regions of Iran. So,in order to identify the best drought stress tolerance indices and select drought tolerant genotypes,24 genotypes of faba bean from ICARDA (International Center for A More

   Drought stress has reduced the yield and cultivated area of faba bean in many regions of Iran. So,in order to identify the best drought stress tolerance indices and select drought tolerant genotypes,24 genotypes of faba bean from ICARDA (International Center for Agricultural Research in DryAreas) drought resistance nursery and control cultivar (Barekat) were planted in two separateexperiments at Gorgan and Gonbad agricultural and natural resources research stations (GolestanAgricultural and Natural Resources Research and Education Center). Faba bean genotypes wereevaluated in a simple lattice design with two replications in 2015-2016. To determine droughttolerant genotypes, it is necessary to grow them under both stress and non-stress condition. To thisend, various stress tolerance indices such as tolerance (TOL), Stress Sensitivity Index (SSI), MeanProductivity (MP), Stress Tolerance Idex (STI), Geometric Man Poductivity (GMP), Yield Index(YI), Modified Stress Tolerance Index (K1STI) were calculated based on the genotypes in stressedyield in stress and non-stressed conditions. Multiple variance analysis of data showed that therewas a significant difference between the genotypes. In medium stress conditions (SI = 0.46), therewas a correlation between bean pod yield in stress and non-stress conditions, which indicates theability to generalize the yield results in non-stress to moderate drought stress conditions. MP,GMP, STI, HM, YI and K1STI indices can be used to identify tolerant genotypes due to theirpositive and significant correlation with yield in both stress and non-stress conditions. Therefore,1, 3, 12, 19, 20, 21, 22, 23 and 24 genotypes were selected for further investigations in thecrossbreeding program of drought resistance.  Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  4 - Study the drought tolerance of 12 varieties of wheat (Triticum aestivum) in Shirvan area
  Seyed Morteza Azimzadeh
      In order to study the drought tolerance of 12 varieties of wheat, an experiment was conducted in research farm of Islamic Azad University of Shirvan in the 2004-2005 growing season. The experiment was performed under two separated conditions using a r More

      In order to study the drought tolerance of 12 varieties of wheat, an experiment was conducted in research farm of Islamic Azad University of Shirvan in the 2004-2005 growing season. The experiment was performed under two separated conditions using a randomized complete block design with three replications. The length and width of each plot was 5 and 1.5 m, respectively. Plant density was 500 seeds per square meter in both experiments. At the early grain filling stage, leaf samples were provided from each plot to determine the leaf electrical conductivity and leaf relative water content. Number of spikes per square meter, grain weight and yield were measured after harvesting. Stress tolerance index (STI) and stress susceptibility index (SSI) were estimated according to grain yield of any variety in both dryland and irrigated conditions. The results of combined analysis showed that  Chamran and Cross-Sabalan produced  2005 and 2310 kg/ha seed yield in irrigated condition, respectivaly that were higher than other varieties. In dryland condition, the yield of  Chamran and Cross-Sabalan were 648 and 551 Kg/ha that were higher than other varieties, as well. Cross-Sablan and Chamran also showed higher drought tolerance index compared with other varieties. Drought tolerance index in the mentioned two varieties was 6.8 and 6.6, respectively. Cross-Sabalan also showed relatively high drought susceptibility index, but Chamran showed higher drought tolerance index and lower drought susceptibility index compared to the other varieties. According to the results, two varieties of Cross-Sablan and Chamran were advisable to plant in regions with limited source of water for irrigation. Manuscript profile