جستجوی مقالات مرتبط با کلیدواژه "بیوماس کل" در نشریات گروه "کشاورزی"

In order to investigate the effect of humic acid, iron and silicon nanoparticles on the contribution of remobilization process and current photosynthesis in wheat yield under salinity conditions, a factorial experiment was conducted in a randomized complete block design arrangement with three replications in the research greenhouse of University of Mohaghegh Ardabili in 1400. Experimental factors included salinity levels (without salinity as control, salinity of 35 and 70 mM by NaCl), foliar application of nanoparticles at four levels (no foliar application as spray, 0.8 per liter foliar application of nano-ferrous, foliar application of 40 mg / l nanosilicon, combined application of iron nano oxide and silicon nanoparticles) and foliar application of humic acid (spraying with water as control and foliar application of 3 g / l). The results showed that the combined application of humic acid and foliar application of 40 mg of nan0-iron oxide and nanosilicon in the absence of salinity reduced the transfer of dry matter from the stem (31.70%) and shoot (22.17%). Current photosynthesis, share of current photosynthesis in grain yield, leaf area index, root volume and weight, total biomass and single plant yield (76.20, 26.14, 61.02, 64.70, 46.68, 68.06, respectively) (46.97%) compared to the non-application of foliar spraying of humic acid and iron and silicon nanooxides under 70 mM soil salinity conditions. It seems that foliar application of humic acid and nano-oxide of iron and silicon can increase the total grain yield of wheat under soil salinity by improving current photosynthesis, current photosynthesis rate, leaf area index, root volume and weight and biomass.

In order to study the effect of bio-fertilizers and putrescine on biomass, nodulation, and some morphological and biochemical traits of vetch(vicia villosa)under rainfed conditions, a factorial experiment has been conducted based on randomized complete block design with three replications in research farm of University of Mohaghegh Ardabili within 2018-2019. The studied factors include bio-fertilizers(withoutbio-fertilizersas control, application of Rhizobium  (Rhizobium legominuzarum), Mycorrhiza (Glomus mosseae), both application of Mycorrhiza and Rhizobium, Rhizobium and Azotobacter (Azotobacter chrocoocom strain 5), Mycorrhiza and Azotobacter, Rhizobium with Mycorrhiza,and Azotobacter) as well as foliar application of putrescine in three levels (foliar application with water as the control, application of 0.5 and 1 mM putrescine). Results show that both application of Azotobacter with Mycorrhiza and Rhizobium and foliar application of 1 mM putrescine increase root weight, leaf share from total biomass, soluble sugars of leaf and stem, and total biomass by 133.33%, 4.5%, 31.94%, 41.82%, and 56.94%, respectively, in comparison with no application of bio-fertilizers and putrescine. Also, application of Azotobacter with Mycorrhiza and Rhizobium and foliar application of 1 mM putrescine decrease electrical conductivity and malondialdehyde by 99% and 125.39%, respectively, in comparison with no application of bio-fertilizers and putrescine. It seems that application of bio-fertilizers and foliar application of putrescine can boost total biomass of vica villosa under rainfed condition as it improves both biochemical and morphological traits.

In order to evaluate the interaction of rice genotypes to salinity stress, responses of16 rice genotypes were assessed to 4 salinity levels (0, 4, 8, 12, dS/m) through a splitplot experiment seedling stage in hydroponic culture. In this experiment characters suchas plant height, leaf area, root length stem length, dry weight of root and stem, dryweight of leaf and total biomass were measured. All the characters in reaction to salinityshowed significant. And correlation coefficient of seedling stage had all the characterspositive and significant differences. At seedling stage, total biomass proved to be thetrait of choice for assessing the tolerance among cultivars as well as treatments. Totalbiomass of the PSBRC88 variety was decreased about 42% compared to control.Whereas this decrease for Shafagh was 26%. Also Nemat A/19R had the most decreasecompared to control (81%). The decrease of stem dry weight of PSBRC88 variety at 12dS/m salt level was less than other varieties with comparison to control (about 23%).The most decrease in stem dry weight of was for IR60819R/IR58025A by 86% relativeto control. The decrease of leaf area in Gerdeh variety was less than other varieties withcomparison to control (about 61%).