alireza mohseni; Raouf Seyed sharif; saeid khomari
Abstract
In order to study the effect of bio fertilizers and putrescine on yield and some traits of wheat (Triticum aestivum L.) at various irrigation levels, a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of University of Mohaghegh ...
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In order to study the effect of bio fertilizers and putrescine on yield and some traits of wheat (Triticum aestivum L.) at various irrigation levels, a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of University of Mohaghegh Ardabili, during 2018-2019. The factors include irrigation (full irrigation as control, irrigation withholding at 50% of heading and booting stages), bio fertilizers (no bio fertilizer, application of mycorrhiza, both application Psedomunas and Flavobacterim, application of mycorrhiza with Psedomunas and Flavobacterim) and putrescine foliar application (foliar application with water as control, foliar application with 0.5 and 1 mM of putrescine). Comparison of the means showed that the maximum amount of relative water content of flag leaf; chlorophyll index, stomatal conductance and quantum yield were obtained in full irrigation, application of mycorrhiza with Psedomunas and Flavobacterim and foliar application 1 mM of putrescine. Foliar application 1 mM of putrescine increased grain yield of about 8.5% in comparison with no application of putrescine. Also, the highest grain yield (799.44 and 746.38 g.m-2) were obtained with application of both Psedomunas and Flavobacterim, as well as application of mycorrhiza with Psedomunas and Flavobacterim, respectively under full irrigation conditions. In the meantime, the lowest (403.42 g.m-2) belongs to the treatment under irrigation withholding in booting stage, without the application of bio fertilizer. It seems that application of putrescine and bio fertilizers can increase grain yield of wheat under water limitation conditions as it improves some physiological traits.
Raouf Seyed sharif; Reza Seyed Sharifi
Abstract
In order to study the effect of irrigation levels and application of methanol and nano iron oxide on yield and grain filling components of sunflower (Helianthus annuus L.), a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of the ...
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In order to study the effect of irrigation levels and application of methanol and nano iron oxide on yield and grain filling components of sunflower (Helianthus annuus L.), a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of the Islamic Azad University, Ardabil Branch in 2017. The experimental factors were included: application of methanol (foliar application with water as control, 20 and 30 volume percent), nano iron oxide (foliar application with water as control, application of 0.3, 0.6 and 0.9 g.L-1) and irrigation levels (full irrigation as control, irrigation withholding at flowering stage, irrigation withholding at grain filling period). The results showed that the highest grain yield (2952 kg/ha), number of filled grains per head (1121 grains per head), 1000-grain weight (50 g), rate and grain filling period, effective grain filling period (0.00239 g/day, 42 and 33 days respectively) and chlorophyll index (56) were obtained in full irrigation and high levels of methanol and nano iron oxide. Maximum of proline and soluble sugars content (11.1 µg/g FW and 72 mg/g FW) were obtained in irrigation withholding at flowering stage and application of high rates of methanol and nano iron oxide. The least of they were obtained in full irrigation and no application of methanol and nano iron oxide.