List of Articles " drought stress"

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  1 - Effect of irrigation regimes on some quantity and quality traits of three bread wheat cultivars in Isfahan province
  H. Dehghanzadeh
  To determine the effect of irrigation regimes on some quantity and quality traits of three bread wheat cultivars in Isfahan, two one-year field experiments were carried out in a split plot layout arranged as randomized complete blocks design with four replicates in two More

  To determine the effect of irrigation regimes on some quantity and quality traits of three bread wheat cultivars in Isfahan, two one-year field experiments were carried out in a split plot layout arranged as randomized complete blocks design with four replicates in two consecutive growing seasons; 2012 - 2013 and 2013 - 2014. The main plots considered irrigation regimes (irrigation after 75, 95 and 115 mm cumulative evaporation from class A evaporation pan), and sub-plots considered three wheat cultivars (Sepahan, Ghods and Pishtazs).Results showed that irrigation after 75 and 95 mm cumulative evaporation did not differ significantly for morphological traits, yield and yield components. Delay in irrigation from 95 to 115 mm cumulative pan evaporation significantly reduced grain yield and its components and increased protein percent. Ghods and Pishtaz cultivars had the highest and the lowest number of grain per spike and the lowest and the highest thousand kernel weight and the lowest and the highest grain yield, respectively. It was concluded that by irrigation wheat after 95 mm cumulative pan evaporation, water could be saved by 22% with no significant loss in yield, while grain protein increased by 1.77 percent. Manuscript profile
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  2 - Tolerant to drought stress of advance barley genotypes
  behrouz vaezi nages ramanimoghadam
  Present study was consisted on 18 advance barley genotypes which was investigated at Gachsaran Agricultural Research Station for two years with RCBD design with 4 replications. During growing year recording data form agronomic important characters. For statistical analy More

  Present study was consisted on 18 advance barley genotypes which was investigated at Gachsaran Agricultural Research Station for two years with RCBD design with 4 replications. During growing year recording data form agronomic important characters. For statistical analysis was performed by software's such as SAS 9.4, Genstat and GGbiplot. Combine analysis of variance was done for grain yield and some agronomic characters at stress and non stress condition and grain yield mean comparisons was accomplished via Duncan at 1% probability level. Grain yield Combine analysis of variance at stress condition showed that year effect and year× variety interaction effect were significant at 1% probability level and variety effect not significant. But at non stress condition just year effect was significant and other effects not significant. Grain yield mean comparisons at 1% probability level indicated that L13 with 4.483 t/ha and 5.814 t/ha at stress and non stress condition was placed at the first class. Considering drought stress tolerant indices showed that L13 detected as the best tolerant genotype to stress condition. Principle components analysis results showed that just 2 components explained 98.2% of total diversity among data. The first components having high and positive correlation with grain yield at stress condition and stress indices such as mean productivity, harmonic mean, geometrical mean productivity, yield index, yield stability index, stress tolerance index, modified stress tolerance index in stress and non stress condition and finally drought index. For this reason the first component identified as the stress tolerant component. But the 2nd component just with justifying 1.8% of total variation having correlation with TOL index and stress susceptibility index identified as the sensitive component. Manuscript profile