Biotechnology
Y. Ghasemi; F. Heidargholinezhad; S. Kelij; M. Imani Rastabi
Abstract
The thornless Black berry (Rubus occidentalis) contains components such as elagic acid, anthocyanin, campherol and salicylic acid. So, it has high antioxidant activity that can inactivate the free radicals and prevent many diseases, such as cancer. Optimization of tissue culture methods for mass production ...
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The thornless Black berry (Rubus occidentalis) contains components such as elagic acid, anthocyanin, campherol and salicylic acid. So, it has high antioxidant activity that can inactivate the free radicals and prevent many diseases, such as cancer. Optimization of tissue culture methods for mass production and gene transfer is very important for blackberry. The present study was aimed at determining the effects of different plant growth regulators concentrations on regeneration and rooting and the effects of different concentrations of sucrose on rooting of thornless black berry (Rubus occidentalis L.) under in vitro conditions. Interaction of BA (0.2, 0.5, 1, 1.5, and 2 mg.L-1) and IBA (0 and 0.1 mg.L-1) was investigated on lateral bud explants regeneration. In the rooting stage, the effects of IBA and NAA each at four levels of 0.2, 0.5, 0.75, and 1 mg.L-1 as well as sucrose at four levels of 1, 1.5, 3, and 4.5% were studied. BA (1 and 1.5 mg.L-1) + IBA (0.1 mg.L-1) was the best regeneration treatment (regeneration: 100%, number of shoots: 4.6, and shoot length: 1.30 cm). The results indicated that the best rooting medium contained NAA (0.75 mg.L-1) and sucrose 3 and 4.5% (rooting: 100%, number of roots: 7.5, and root length: 2.88 cm).
Biotechnology
F. Noormand Moaied; N. Valizadeh; T. Samandari Giklo
Abstract
Silybum marianum L., from fam. asteraceae, is a very important medicinal plant in the pharmaceutical industry due to its active ingredient silymarin. Silymarin is very effective in treating the liver diseases, hepatitis, and cardiovascular disorders. Since the potential and production speed of this medicinal ...
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Silybum marianum L., from fam. asteraceae, is a very important medicinal plant in the pharmaceutical industry due to its active ingredient silymarin. Silymarin is very effective in treating the liver diseases, hepatitis, and cardiovascular disorders. Since the potential and production speed of this medicinal compound is low in habitats under natural conditions, the use of genetic engineering and production of transgenic plants using the various techniques such as tissue culture has been considered in this plant. The first step in this direction is to obtain an in vitro regeneration protocol. In this study, the leaf explants obtained from the Hungarian cultivar of S. marianum were evaluated for the direct regeneration affected by different combinations of hormones. Six weeks after the culture, the highest shooting (57%) was observed in the ½ MS medium containing 0.4 mg l-1 zeatin, 0.2 mg l-1 BAP, and 0.2 mg l-1 NAA. The shoots were then transferred to the root culture medium with the different hormonal treatments. The results showed that the best treatment to obtain the long and high roots was the ½ MS medium containing 0.25 mg l-1 NAA and 2 g l-1 activated charcoal. The seedlings obtained from the direct regeneration grew well after transplanting into the soil.
A. Hajiheidar; M. Tohidfar; S.M. Miri; A.R. Zarekarizi; S. Ghadermazi; Kh. Samiee
Abstract
This research was aimed to achieve the optimal protocol for micropropagation of shallot (Allium stipitatum) via basal disc. For regeneration, the basal disc explants were cultured on Murashig & Skoog (MS) medium containing different concentrations of Benzyladenine (BA) (0, 1 & 2 mgl-1) and Naphthalene ...
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This research was aimed to achieve the optimal protocol for micropropagation of shallot (Allium stipitatum) via basal disc. For regeneration, the basal disc explants were cultured on Murashig & Skoog (MS) medium containing different concentrations of Benzyladenine (BA) (0, 1 & 2 mgl-1) and Naphthalene acetic acid (NAA) (0, 0.5 & 1 mgl-1). The regenerated bulblets were rooted on MS and ½MS medium supplemented with different concentrations of BA, NAA, Indole-3-acetic acid (IAA) and activated charcoal (AC). The rooted plantlets were successfully acclimatized under ex vitro conditions. The results indicated that the maximum number of bulblet (12.66) was observed on medium containing 2 mg.l-1 BA and 1 mg.l-1 NAA. In addition, the highest root number (1.77) and length (2.55 cm) were observed on 1 mg.l-1 IAA and 1 g.l-1 activated charcoal and the survival rate was 100% in pots filled with a coco peat: perlite: peat moss (1:2:1 v/v) mixture. This research could be a suitable method for micropropagation of this endangered plant.Hence, the rapid micropropagation of shallot is compulsory because of its various applications and extinction.
M. Pirooz; H. Amiri; B. Dostii
Abstract
Thymus daenensis Celak., belonging to the Lamiaceae family, is an endemic species of genus Thymus in Iran. Despite the increasing need for mass propagation of this plant due to the presence of useful secondary metabolites, there is little information about its proliferation. In the present study, the ...
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Thymus daenensis Celak., belonging to the Lamiaceae family, is an endemic species of genus Thymus in Iran. Despite the increasing need for mass propagation of this plant due to the presence of useful secondary metabolites, there is little information about its proliferation. In the present study, the interaction of some hormonal treatments in the MS medium containing indole acetic acid (IAA), benzyl amino purine (BAP) and kinetin (Kin) in presence or absence ascorbic acid (AS) were investigated for callus induction and micropropagation of Thymus daenensis. Results showed that the callus index, fresh weight, and dry weight of callus from internode explants were better as compared with apical meristem explants. Significant differences were found for regeneration from callus cultures derived from apical meristem and internode, so that NAA-Kin (4.5 and 1.5 mg/L) and NAA-BAP (9 and 6 mg/L) were the best hormonal combination. As well, significant differences were found between callus production from internode explants and apical meristem explants, so that Kin-NAA (9 and 3 mg/L), and NAA-BAP (6 and 9 mg/L) in presence of ascorbic acid were the best hormonal combination. Overall, the control treatment, NAA and Kin showed favorable effects on callus induction and better regeneration was obtained from internode explants.
