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      • Open Access Article

        1 - Study of assimilate remobilization as affected by heat stress in rice cultivars in north of Khuzestan
        Abdolali Gilani1 Seyed Ataallah Siadat2 Sami Jalali3 Kaveh Limouchi4
        An experiment was carried out to study of heat stress on assimilate remobilization of rice in north of Khuzestan province in a split-plot arrangement using randomized complete blokes design with three replication in 2006 and 2007 at Shavoor Agricultural Research Station More
        An experiment was carried out to study of heat stress on assimilate remobilization of rice in north of Khuzestan province in a split-plot arrangement using randomized complete blokes design with three replication in 2006 and 2007 at Shavoor Agricultural Research Station, Dependent in Research Center of Agricultural and Natural Resources of Khuzestan. For exposing rice cultivars to different higher temperature regimes, main plot were assigned to three sowing dates from 5 May, 26 May and 16 Jun and cultivars were; Hoveizeh, Hamar (heat tolerance) Ghermez Anbori, Champa (heat sensitive) and Danial (relatively heat tolerant) were in sub-plots. Results showed that the highest dry matter redistribution was in Ghermez Anbori and heat tolerant cultivars. The grain, stem and leaf portions were significant on sowing date and cultivars. The second and third planting dates and heat tolerant cultivars had higher content. The highest remobilization, current photosynthesis and the portion of organs in filling grain yield were 1140.8 kg.ha-1, 3923.3 kg.ha-1, and 22.5%, respectively, in 26 May planting. But the highest share portion of current photosynthesis in grain yield was in 5 may in the planting date. Manuscript profile
      • Open Access Article

        2 - Evaluation of dry matter remobilization of assimilates materials amount and their contribution to the yield of different bread wheat varieties and lines in Ardabil
        Roghayyeh Zabihi-e-Mahmoodabad Ahmad Tobeh Marefat Ghasemi Shahzad Jamaati-e-Somarin
        In order to evaluation of dry matter remobilization of assimilates materials amount and their contribution to the yield of different bread wheat varieties and lines in Ardabil, an experiment in randomized complete block design with three replications with ten cultivars More
        In order to evaluation of dry matter remobilization of assimilates materials amount and their contribution to the yield of different bread wheat varieties and lines in Ardabil, an experiment in randomized complete block design with three replications with ten cultivars (Includes: Uroom, Zare, MV-Magdalena, Soissons, MV-Toborzo, Mihan, Pishgam, FD-11111 and FD-12073) was done in Research Station of Agriculture and Natural Resources of Ardabil in 2015-2016. Analysis of variance showed a significant difference between the lines and cultivars studied, for different traits. FD-11111 line has the highest number of grain per spikes, grain yield per square meter, the share in the filling and grain growth (7417.9 grams per square meter).The MV-bodri variety has the highest biological yield per square meter, the percentage of share the transfer process dry matter from shoot (19.723%) in the yield and maximum transfer of dry matter from total of shoots to the grain. The MV-Magdalena variety also has the lowest biological yield and highest harvest index, the highest percentage (47.797%) of dry matter remobilization efficiency of shoots and with 3.57 percent was the highest current photosynthesis efficiency. The highest current photosynthesis contribution in Zare cultivar (89.923 grams per square meter) that has the lowest proportion of dry matter remobilization was obtained. So generally can be said that was much higher current photosynthesis contribution in increasing grain yield, and FD-11111 line between studied genotypes, was the best lines. Manuscript profile