A study was carried out to compare the appreciable differences between various durum wheat genoty... more A study was carried out to compare the appreciable differences between various durum wheat genotypes during the germination and seedling stages. Twenty promising spring durum wheat genotypes were tested under four (0.0, -0.3, -0.6 3 and -0.9 MPa) osmotic stresses conditions laid out in factorial experiments based on a completely randomized design (CRD) with three replications. Osmotic potentials were produced using different concentrations of polyethylene glycol (PEG 6000) at 20°C. Results revealed that all the recorded traits were significantly (P<0.01) affected by osmotic stress treatments. There were remarkable decreases in germination percentage, coleoptile, root and shoot length, shoot dry weight, seedling dry weight with increasing osmotic stress. However the germination rate showed a slight increase under low osmotic stress condition. The highest germination percentage was 93.5%, observed in D1 (control) treatment whilst the lowest (42%) was seen in the D4 (-0.9 MPa) treat...
International Journal of Agriculture and Biology, 2014
Cultivated rice under aerobic condition typically decreases both growth and yield. The experiment... more Cultivated rice under aerobic condition typically decreases both growth and yield. The experiment was carried out at MARDI Bertam, Seberang Perai to investigate the growth performances of different rice varieties; MRQ74, MR253 (adapted aerobic rice), MR232 (lowland rice). The objective was to assess the effects of different treatments on rice growth in aerobic ecosystem. Rice was cultivated with; soil covered by rice straw mulching (SC), plastic film (PC) and no soil cover (NC) with lowland rice as control. Significantly higher values were obtained for tiller number, panicle number, LAI, above ground biomass, grain weight density and grain yield recorded in SC and response for physiological traits i.e. photosynthesis rate, stomatal conductance and transpiration rate (A, gs, E) was found higher in control. The symptoms of water stress were observed in NC which impaired rice growth and reduced grain yield. Rice responds differently in morphological, physiological and yield component d...
The aim of this field investigation was to study the enrichment of biodiversity of the slope at a... more The aim of this field investigation was to study the enrichment of biodiversity of the slope at an early phase of succession, initiated by selected pioneers, and to study how this enrichment related to enhancement of the slope stability. Four experimental plots, with differing plant pioneers and number of species (diversity), were designed in order to assess the effects of plant succession on slope stability. Plant growth pattern was assessed by observing the increment in species diversity (number), species frequency and plant ...
One way to overcome t he negat ive ef fects of water s tress on crop production i s the developme... more One way to overcome t he negat ive ef fects of water s tress on crop production i s the development of drought tolerant cultivars. In the p resent study we have attempted to quantify the d rought tolerance of several durum whe at genotypes using stress indices. The study was laid out in f actorial experiments based on a
A study was carried out to compare the appreciable differences between various durum wheat genoty... more A study was carried out to compare the appreciable differences between various durum wheat genotypes during the germination and seedling stages. Twenty promising spring durum wheat genotypes were tested under four (0.0, -0.3, -0.6 3 and -0.9 MPa) osmotic stresses conditions laid out in factorial experiments based on a completely randomized design (CRD) with three replications. Osmotic potentials were produced using different concentrations of polyethylene glycol (PEG 6000) at 20°C. Results revealed that all the recorded traits were significantly (P<0.01) affected by osmotic stress treatments. There were remarkable decreases in germination percentage, coleoptile, root and shoot length, shoot dry weight, seedling dry weight with increasing osmotic stress. However the germination rate showed a slight increase under low osmotic stress condition. The highest germination percentage was 93.5%, observed in D1 (control) treatment whilst the lowest (42%) was seen in the D4 (-0.9 MPa) treat...
International Journal of Agriculture and Biology, 2014
Cultivated rice under aerobic condition typically decreases both growth and yield. The experiment... more Cultivated rice under aerobic condition typically decreases both growth and yield. The experiment was carried out at MARDI Bertam, Seberang Perai to investigate the growth performances of different rice varieties; MRQ74, MR253 (adapted aerobic rice), MR232 (lowland rice). The objective was to assess the effects of different treatments on rice growth in aerobic ecosystem. Rice was cultivated with; soil covered by rice straw mulching (SC), plastic film (PC) and no soil cover (NC) with lowland rice as control. Significantly higher values were obtained for tiller number, panicle number, LAI, above ground biomass, grain weight density and grain yield recorded in SC and response for physiological traits i.e. photosynthesis rate, stomatal conductance and transpiration rate (A, gs, E) was found higher in control. The symptoms of water stress were observed in NC which impaired rice growth and reduced grain yield. Rice responds differently in morphological, physiological and yield component d...
The aim of this field investigation was to study the enrichment of biodiversity of the slope at a... more The aim of this field investigation was to study the enrichment of biodiversity of the slope at an early phase of succession, initiated by selected pioneers, and to study how this enrichment related to enhancement of the slope stability. Four experimental plots, with differing plant pioneers and number of species (diversity), were designed in order to assess the effects of plant succession on slope stability. Plant growth pattern was assessed by observing the increment in species diversity (number), species frequency and plant ...
One way to overcome t he negat ive ef fects of water s tress on crop production i s the developme... more One way to overcome t he negat ive ef fects of water s tress on crop production i s the development of drought tolerant cultivars. In the p resent study we have attempted to quantify the d rought tolerance of several durum whe at genotypes using stress indices. The study was laid out in f actorial experiments based on a
Uploads
Papers by syed barakbah