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        1 - Screening of Bread Wheat Genotypes for Stem Reserves Remobilization, Relative Water Content and Osmotic Adjustment under Drought Stress
        زینب Soleimani H. Ramshini S.M.M. Mortazaviyan B. Foghi
        Drought one of the most important global threats against bread wheat production. In order to identify physiological traits associated with drought tolerance, 52 bread wheat varieties were cultured under two normal and drought stress condition in a randomized complete bl More
        Drought one of the most important global threats against bread wheat production. In order to identify physiological traits associated with drought tolerance, 52 bread wheat varieties were cultured under two normal and drought stress condition in a randomized complete block desigen with three replications. RWC (in three independent times), leaf rolling, leaf silvering, days to flowering, days to maturity and stem reserve remobilization were investigeted. Also in a pot experiment osmotic adjustment of the varieties were measured at seedling stage. varieties Star and Bezostaya had the highest RWC (0.79 and 0.78, respectively). Osmotic adjustment in Rasol and Unknown11 were highest (0.58 and 0.56, respectively). Varieties Tipik, Unknown11 and Azar2 showed the least decrease in thousand grain weight after spraying with KI (4.8, 5.5 and 5.5, respectively). Also varieties Dez, Gaspard and MV-17 have the highest degree of leaf silvering and varieties Niknejad, Star and Kohdasht under drought stress were able than the other varieties bring their leaves to form a rolling and cope with water deficit. Under drought stress, Varieties Alborz, Zagros and Inia were observed premature than the other varieties and Gaspard and Kaslojen varieties were observed late mature than the other varieties. Altogetehr varieties Kohdasht, Star and Bezostaya can be used as genetic resources for leaf water retention under drought stress condition for imjproving other varieties. Also as Azar2 and Unknown11 had highest amount of thousand grain weight under normal condition and simoultanously showed high ability in stem reserves remobilization they can be selected as parents in crosses for improving these traits.  Manuscript profile
      • Open Access Article

        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