Molecular Phsoiology
Tayebeh Basaki; Babak Pikarestan; Seyed Mojtaba Khayam-Nekouei
Volume 7, Issue 20 , March 2018, , Pages 65-74
Abstract
This experiment was conducted as split plots in randomized complete block design with four replications in 2014 and 2015 at Research Farm of Payam Noor University, Milajerd branch. Irrigation cuttings included S0: Complete irrigation, S1: Irrigation cut at 8-leaf stage, S2: Irrigation cut off at seed ...
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This experiment was conducted as split plots in randomized complete block design with four replications in 2014 and 2015 at Research Farm of Payam Noor University, Milajerd branch. Irrigation cuttings included S0: Complete irrigation, S1: Irrigation cut at 8-leaf stage, S2: Irrigation cut off at seed filling stage as main plots and six different hybrids of sweet corn including Merit, Basin, Obsession, Chase, KSC.404, KSC .403 in sub plots. The results of interaction of treatments showed that the highest grain yield was obtained from full irrigation treatment at Obsession with 8912 kg. ha-1 and the lowest grain yield was obtained from 8 liters of broth treatment in Merit with 7102 kg. ha-1 which The difference was 25.84%. The highest water use efficiency was obtained in irrigation cuttings at 8-leaf stage in Obsession hybrid with a mean of 0.65 kg. m-3 and the lowest in the total irrigation method in Merit with a mean of 0.19 kg. m-3, with a difference of 226%. The highest amount of proline observed in the irrigation cuttings at the 8th leaf stage in Merit hybrid with mean of 12.23 mg. g-1 and the lowest in full irrigiation hn Obsession hybrid with 22.11 mg. g-1, which had a significant difference at 1% level. According to the results of research, in irrigated cutting pattern, it is recommended to use cut off at seed filling stage with 14% reduction of water consumption in sweet maize varieties, especially in Basin and Obsession hybrids for Milajerd region in Markazi province.
Biotic and Abiotic stress
simin zahedchekovari; Neymat Gasemov
Volume 5, Issue 11 , December 2015, , Pages 65-75
Abstract
Borago officilalis, one of the oldest medicinal plants that is consumed in iran and other regions word. The considering importance of medicinal Borago officilalis, abundance of dry land, confroting ability with environmental stress by this plant, it seems necessary until done one study with the folowing ...
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Borago officilalis, one of the oldest medicinal plants that is consumed in iran and other regions word. The considering importance of medicinal Borago officilalis, abundance of dry land, confroting ability with environmental stress by this plant, it seems necessary until done one study with the folowing goals. The chief goal of this research is to look for any effects of hydro stresses on proline biosynthesis, protein quantity, growth and change high consumption elements like K, S, P & N at hydroponic conditions. According to the results, there was a reduction in the weight of dry / wet root and aerial sections in any plants under hydro stress treatment in comparison with witness ones. The mentioned reductions were significant at aerial sections. There was a decrease in K quantity at root section with an increase at aerial parts. Also there was an increase in quantity of high consumption elements like N, P & S of root and a reduction of the same at aerial sections. Drought stress decreases the amount of protein in the plant shoots and roots compared to control. Proline contents in leaves and roots significantly increased under drought stress compared to control.
Tissue culture and Micropropagation
Keyghobad Kaikavoosi; Altaf Hosseini Nadaf; Gholamreza Bakhshi khaniki
Volume 5, Issue 9 , June 2015, , Pages 29-38
Abstract
In most transformation studies it has been indicated that adding proline to the tissue culture medium can increase the callus induction frequency and reduce induction time. Adding proline to callus induction medium in this phase can affect the production of aromatic compounds in rice and if the goal ...
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In most transformation studies it has been indicated that adding proline to the tissue culture medium can increase the callus induction frequency and reduce induction time. Adding proline to callus induction medium in this phase can affect the production of aromatic compounds in rice and if the goal of exogenous gene transformation is increasing the rice aromatic associated secondary metabolites such as 2-acetyl-1-pyrroline (2AP), this amino acid can slipup the final results. Although, absence of amino acids such as proline can reduce callus induction percentage. In this research, callus induction from two indica rice varieties; Ambemohar 157 and Indrayani were optimized, using MS medium having various concentrations of 2,4-D, without using proline. The results revealed that 2.5 mgl-1 of 2,4-D for Ambemohar 157 and 4 mgl-1 for Indrayani can lead to better callus induction. These results indicated that absence of proline can be disregard by increasing of 2,4-D concentrations. Calluses obtained from the best hormone treatment were cultured on MS fortified with 0.01 mgl-1 NAA + (1, 2, 3, 4, 5) mgl-1 BAP for shoot regeneration. The highest percentage of regeneration was achieved on MS supplemented with 2 mgl-1and 3 mgl-1 for Ambemohar157 and Indrayani cultivar respectively. Proline contents in calli which were growth in MS medium supplemented with 500 mg/L of proline showed approximately 12 to 14 fold increase over the calli growth in non-proline added medium.
