The effect of orchid immature embryos age on asymbiotic germination frequency by optimizingplant growth regulators

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PIRI HOSSEIN

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Journal Paper

Paper Information

Journal: JOURNAL OF AGRICULTURAL BIOTECHNOLOGY Year:2020 | Volume:12 | Issue:1 Page(s): 143-160

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Title

The effect of orchid immature embryos age on asymbiotic germination frequency by optimizingplant growth regulators

Author(s)

PIRI HOSSEIN | Issue Writer Certificate

Keywords

Growth hormonesQ1

M mediumQ1

ProtocormsQ1

SpheruleQ1

Abstract

Objective Orchids seeds are so small, lacking nutrients and barely germinate in natural condition. For germinating in natural conditions, should associatie with fungi, especially mycorrhizal fungi. Drawing on the tissue culture technique and meeting all necessary growth and development conditions, the limitations can be overcome. Materials and Methods After being surfaced cleaned, the capsules containing seeds were placed in 1% Teepol solution as a disinfectant and wetting agent for 20 minutes to completely remove pathogens; then were washed and placed under laminar air flow, disinfected with HgCl2 0. 2 for 10 minutes, Bavistin and Streptomycin each one 0. 03% for 5 minutes in a entirely sterile environment. All the culture media were simultaneously ready and the seeds were uniformly inoculated in a totally sterilized environment and incubated. Results The percentage and germination rate were affected by seed age and plant growth regulators. The formation of Spherule and chlorophyll synthesis were highest in the third stage of seed culture. Based on the type of treatment, the formation, development and differentiation of protocorm were observed between 43-76 days after culture, which was statistically significant at 1% compared to control. Conclusions Considering the data analysis results, the success rate from the germination stage to the differentiation of protocorm in orchid seeds is mostly different based on seed age in each spices and cultivars, the type of plant growth regulators used, The ratio and composition of the two types of auxin and the ratio of auxin to cytokinin and vice versa are different. Therefore, it is necessary that new complementary experiments be done for each spices and cultivars based on the difference in the time taken from pollination to embryo ripening.

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APA: Copy

PIRI, HOSSEIN. (2020). The effect of orchid immature embryos age on asymbiotic germination frequency by optimizingplant growth regulators. JOURNAL OF AGRICULTURAL BIOTECHNOLOGY, 12(1 ), 143-160. SID. https://sid.ir/paper/224530/en

Vancouver: Copy

PIRI HOSSEIN. The effect of orchid immature embryos age on asymbiotic germination frequency by optimizingplant growth regulators. JOURNAL OF AGRICULTURAL BIOTECHNOLOGY[Internet]. 2020;12(1 ):143-160. Available from: https://sid.ir/paper/224530/en

IEEE: Copy

HOSSEIN PIRI, “The effect of orchid immature embryos age on asymbiotic germination frequency by optimizingplant growth regulators,” JOURNAL OF AGRICULTURAL BIOTECHNOLOGY, vol. 12, no. 1 , pp. 143–160, 2020, [Online]. Available: https://sid.ir/paper/224530/en

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