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Objective:To study callus induction from different explants(internode,leaf,root)and in vitro plantlets propagation from medicinally important plant Achyranthes aspera L.Methods:Sterilized explants were prepared by uning 0.1%HgCl_2 and 0.5%Bavistin and callus was obtained when cultured onto Murashige Skoog’s(MS)medium by using different concentrations and combination of 2,4-D.NAA.BAP,IAA,IBA with 3%sucrose and 0.8%agar.Induced callus was immediately transferred to MS medium containing at different concentrations of phytohormones for shootlets and rootlets induction respectively.Results:Sterilization treatment of 0.1%HgCl_2.for 2-3 min and Bavistin 0.5%for 10-12 min showed the highest percentage of asepsis and survival rate.Maximum induction of callus was obtained from a combination of 2.0 mg/L 2,4-D and 0.5 mg/L NAA from leaf.Highest shootlets number(4.83±0.l7)and length(3.8±0.16)cm were observed on full strength MS medium when fortified with BAP 4.0 mg/L and KIN 0.5 mg/L.Concerted efforts of BAP 10 mg/L and NAA 0.5 mg/L on full strength MS medium showed highest leaf number(6.77±0.94).In vitro raised shoots were allowed to root on different strengths of MS medium fortified with IAA and IBA at different concentrations.Experimentally,3.0 mg/L IBA was enabled to induce maximum rootlets number(10.0±9.82)on full strength MS medium.Afterwards,regenerated shoots with well developed roots were successfully subjected to hardening process and were acclimatized.The survived plantlets showed 66.67%survival frequency without any morphological abnormality.Conclusions:The results demonstrated that different explants were good source of callus induction,morphology analysis as well as indirect plantlets regeneration.
Objective: To study callus induction from different explants (internode, leaf, root) and in vitro plantlets propagation from medicinally important plant Achyranthes aspera L. Methods: Sterilized explants were prepared by uning 0.1% HgCl_2 and 0.5% Bavistin and callus was obtained when cultured onto Murashige Skoog’s (MS) medium by using different concentrations and combination of 2,4-D. NAA.BAP, IAA, IBA with 3% sucrose and 0.8% agar. Induced callus was transferred to MS medium containing different concentrations of phytohormones for shootlets and rootlets induction respectively. Results: Sterilization treatment of 0.1% HgCl_2.for 2-3 min and Bavistin 0.5% for 10-12 min showed the highest percentage of asepsis and survival rate. Maximum induction of callus was obtained from a combination of 2.0 mg / L 2,4-D and 0.5 mg / L NAA from leaf. Highest shootlets number (4.83 ± 0.17) and length (3.8 ± 0.16) cm were observed on full strength MS medium when fortified with BAP 4.0 mg / L and KIN 0.5 mg / L.Concerted ef forts of BAP 10 mg / L and NAA 0.5 mg / L on full strength MS medium highest leaf number (6.77 ± 0.94). In vitro raised shoots were allowed to root on different strengths of MS medium fortified with IAA and IBA at different concentrations .Experimentally, 3.0 mg / L IBA was enabled to induce maximum rootlets number (10.0 ± 9.82) on full strength MS medium. Afterwards, regenerated shoots with well developed roots were successfully subjected to hardening process and were acclimatized. The survived plantlets showed 66.67% survival frequency without any morphological abnormality. Conclusions: The results demonstrated that different explants were good source of callus induction, morphology analysis as well as indirect plantlets regeneration.