E. Rezaeyan Zadeh; M. Parsa; A. Ganjali; A. Nezami
Abstract
Abstract
In order to investigate the effects of different irrigation regimes on yield and yield components of three chickpea cultivars, an experiment was conducted during the 2007 growing season at Mashhad. Six irrigation regimes including I1= full irrigation, I2= irrigation at branching, I3= irrigation ...
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Abstract
In order to investigate the effects of different irrigation regimes on yield and yield components of three chickpea cultivars, an experiment was conducted during the 2007 growing season at Mashhad. Six irrigation regimes including I1= full irrigation, I2= irrigation at branching, I3= irrigation at flowering, I4= irrigation at pod formation, I5= irrigation at seed filling stage, and I6=dry farming without irrigation(main factors). Three kabuli chickpea cultivars ILC482,Jam, Karaj 12-60-31as (sub factors) in a split block experiment based on randomized block design with three replications. There were significant differencese between supplemental irrigation levels on yield and yield components of chickpea cultivars . The results showed that the supplemental irrigation at flowering had significant higher grain yield (1732 kg/ha), pod number in main and substems, grain number and weight in plant and 100 grain weight, compared to other irrigation regimes. All traits exclude of pod number in main and substems were higher in full irrigation than supplemental irrigation regimes. ILC482 and Karaj 12-60-31 cultivars had the highest and lowest grain and biological yields and harvest index respectively.Grain yield had significant positive correlation With Seed filling rate (r =0/081**)and effective seed filling period (r =0/79**). Grain weight had the highest significant positive correlation (r =0/75**) with grain yield. The results showed taht the flowering stage in chickpea cultivars is the most sensitive stage to drought stress and in deficit water condition supplemental irrigation in this stage may considerably increases yield of chickpea. In tolerance to drought stress and supplemental irrigation conditions ILC482 cultivar was better compared to other cultivars.
Keywords: Supplemental irrigation, Seed filling rate, Drought stress, Morphological characteristics Grain yield, Chickpea
H.R. Zabihi; A.R. Savabeghi; K. Khavazi; A. Ganjeali
Abstract
Abstract
Plant- growth promoting rhizobacteria enhance plant growth and yield directly and or indirectly. A factorial experiment was conducted in greenhouse to determine the efficacy of four strains of Fluorescent Pseudomonas on wheat yield and yield component under saline conditions. the experiment ...
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Abstract
Plant- growth promoting rhizobacteria enhance plant growth and yield directly and or indirectly. A factorial experiment was conducted in greenhouse to determine the efficacy of four strains of Fluorescent Pseudomonas on wheat yield and yield component under saline conditions. the experiment was carried out with the following treatments (non –inoculation control and inoculation with P.fluorescens strain153 P.fluorescens strain169 P.putida strain108 and P.putida strain 4) and four salinity levels (1,4,8 and 12 dS/m) in a completelyrandomized design .A combinationof (NaCl+ CaCl2 +MgCl2 with equal equivalent) dissolved in distilled water and added to soils to meet the desiredsalinity treatments .wheat seeds were inoculated whit strains before planting. During growing period, the pots were irrigated with distilled water to maintain soil moisture around 0.8 FC .before harvest, growth indices including : plantheight, number of tillers and heads and after harvest,dry weight of shoots and grain yield were determined .Results showedthat with increasing salinity level ,grain yield,1000 weight ,number of grain per spick , plant height and biologic yield decreased significantly (P
