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Microtubers from somatic embryos of Bunium persicum
1Regional Research Laboratory, Jammu, India.
Abstract:
Improvement in induction and growth of microtubers was related to macro and micro constituents of MS-medium, kinetin and sucrose levels. MS-medium at half strength constituents induced more conversion of somatic embryos (75%) with marginally longer and more tubering shoots (75%). However, tuber size was one third of full strength medium grown tubers. Addition of various concentrations of kinetin revealed a dose dependent stimulatory relationship in tuber formation showing enhanced tuber formation and their growth at 1 x 10(-8) M kinetin level. All plantlets produced tubers of 32.5 mg average weight. Plant conversion and shoot growth was maximum at 30 g/L of sucrose concentration and tuber weight increased approximately five times when sucrose level was raised to 60 g/L. Tubering explants also increased from 2 to 90%.
Insights
Optimizing plant tissue culture, this study found half-strength MS-medium with specific kinetin and sucrose levels significantly boosted microtuber induction and growth. Higher sucrose concentrations greatly increased tuber yield and size.
Area of Science:
- Plant Science
- Biotechnology
- Horticulture
Background:
- Microtuberization is a key technique for efficient plant propagation and secondary metabolite production.
- Optimizing nutrient media, plant growth regulators, and carbon sources is crucial for successful microtuber induction and development.
Purpose of the Study:
- To investigate the effects of macronutrient strength, kinetin concentration, and sucrose levels on microtuber induction and growth.
- To determine optimal conditions for enhancing microtuber yield and quality in plant tissue culture.
Main Methods:
- Somatic embryos were cultured on Murashige and Skoog (MS) medium at half and full strengths.
- Various concentrations of kinetin (a cytokinin) and sucrose were added to the media.
- Microtuber formation, shoot growth, and tuber characteristics were evaluated under different treatment conditions.
Main Results:
- Half-strength MS medium enhanced somatic embryo conversion (75%) and shoot growth but resulted in smaller tubers compared to full-strength medium.
- Kinetin at 1 x 10(-8) M significantly promoted tuber formation and growth, with plantlets averaging 32.5 mg tubers.
- Maximum plant conversion and shoot growth occurred at 30 g/L sucrose; tuber weight increased fivefold at 60 g/L sucrose, with tubering explants rising to 90%.
Conclusions:
- Medium strength, kinetin, and sucrose concentration are critical factors influencing microtuberization.
- Half-strength MS medium combined with optimal kinetin and high sucrose levels can significantly improve microtuber yield and quality.
- These findings provide valuable insights for optimizing microtuber production protocols in plant biotechnology.