List of Articles رسیدگی دانه

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  1 - The effect of harvesting time on germination characteristics and some antioxidant properties of different wheat varieties
  Marzieh Shakerian1 Mojtaba Alavifazel2* Mani Mojaddam3
  In order to study the effect of harvesting time on germination characteristics and some antioxidant properties of different wheat varieties, this study was carried out in a factorial in a completely randomized design with three replications in Izeh city. The experiment More

  In order to study the effect of harvesting time on germination characteristics and some antioxidant properties of different wheat varieties, this study was carried out in a factorial in a completely randomized design with three replications in Izeh city. The experiment factors consisted of harvesting time at two levels of harvesting in hard-paste and harvesting stage at maturity stage and bread and durum wheat cultivars in six levels of Natasha, Aflak, Chamran, Dehdasht, Behrang and Karkheh. The results showed that the highest antioxidant content of the seeds, such as polyphenol, flavonoids and antioxidant capacity, belonged to Chamran cultivar and harvest at maturity stage. The least of these cultivars was Aflak and Karkheh cultivars in the stage of hardening. Also, harvest time significantly affected germination percentage and seedling length of different wheat cultivars. The percentage of germination with accelerated grain harvest decreased significantly. In interaction, harvest time and cultivar had the highest percentage of seed germination (99%) to Chamran and Dehdasht cultivars and harvest at seedling stage. Reducing the percentage of germination and consequently reducing seedling length with accelerated seed harvesting in the dough step of hardening of the seeds resulted in reduced seed yield. In general, maximum germination and antioxidant content was obtained from harvesting stage at maturity stage. Chamran cultivar compared to other cultivars showed significant superiority in terms of traits. Manuscript profile
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  2 - Effects of amounts and nitrogen fertilizer splitting on yield, yield components and dry matter remobilization of wheat (cv. Chamran)
  Morteza Khanjani1 Abdollah Bahrani2*
  This experiment was conducted as factorial based on completely randomized blocks design with 3 replications during 2014-2015 in Ramhormoz, Khozestan province. The experiment consisted of two factors: nitrogen fertilizer rates: (zero, 50, 100 and 200 kg per hectare) and More

  This experiment was conducted as factorial based on completely randomized blocks design with 3 replications during 2014-2015 in Ramhormoz, Khozestan province. The experiment consisted of two factors: nitrogen fertilizer rates: (zero, 50, 100 and 200 kg per hectare) and split nitrogen application included: T1 = (50% at planting + 50% at stem elongation), T2 = (33% at planting + 33% at stem elongation + 33% before ear emergence), T3 = (25% at planting + 50% + 25%at stem elongation before ear emergence) and T4 = (25% at planting + 25% + 25% at stem elongation before ear emergence + 25% in the milky stage. The results showed that difference between the levels of nitrogen fertilizer in plant height, number of spikes per square meter, grain number per spike, 1000-seed weight, grain yield, biological yield, harvest index and the amount and efficiency of current photosynthesis at 1% level of probability and remobilization rate of dry matter at 5% level of probability. Effect of split application of nitrogen on plant height, number of spikes per square meter, grain yield, biological yield and current photosynthesis at 1% level of probability and the efficiency photosynthesis current at 5% level of probability was significant. The interaction of the amount and nitrogen fertilizer splitting on biological yield and efficiency of dry matter remobilization and efficiency of current photosynthesis at 1% level of probability was significant. The highest grain yield was in N2 (100 kg ha nitrogen) with 5.5141 kg/ha and fertilizer splitting in T3 (25% at planting + 50% + 25% at stem elongation before ear emergence) 4.4592 kg/ha, respectively. The greatest amount and efficiency of current photosynthesis were observed in N2 (100 kg/ha nitrogen) and T3 (25% planting + 50% + 25% stem elongation before Ear emergence). In general, consuming 100 kg/ha of nitrogen fertilizer with T3 splitting (25% planting + 50% stem elongation + 25% before Ear emergence) increase yield and yield components compared to other treatments and it can be recommended in the region of study. Manuscript profile