Conservation of Garcinia imberti Bourd. through seeds

Authors

  • M Anto Conservation Biology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode, Thiruvananthapuram 695 562, Kerala, India
  • M Angala Conservation Biology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode, Thiruvananthapuram 695 562, Kerala, India
  • P S Jothish Conservation Biology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode, Thiruvananthapuram 695 562, Kerala, India
  • C Anilkumar Conservation Biology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode, Thiruvananthapuram 695 562, Kerala, India

DOI:

https://doi.org/10.14719/pst.2019.6.2.518

Keywords:

Agasthyamala Biosphere Reserve, Desiccation, Dormancy, Endangered, Seed storage practises

Abstract

Garcinia imberti seeds were collected during 2015-2017 from Shangili, Cheenikkala and Bonaccord evergreen forests of Agasthyamala Biosphere Reserve, the only abode of this endangered endemic species. Germinability of seeds were analysed through decoating, Gibberellic acid (GA3) and light inductive pre-treatments on fresh (62.8 % moisture content; MC) and desiccated (fast; 23.3% MC and slow; 30.5 % MC) seeds. The seed germination with impermeable coat (0.7-1.2 mm) was restricted which on decoating got enhanced. Application of GA3 along with exposure to light breaked dormancy within 4-6 days compared to non-treated seeds that took 238-254 days to germinate. Stored seeds behaviour revealed that seed moisture content and rate of germination were negatively correlated. Seed storage was found to be more efficient only up to 80 days at controlled seed banking conditions (20 ± 20C, 20 % relative humidity; RH). Both fast and slow desiccated seeds stored for 60 days in seed bank conditions exhibited 50.4 and 43.4 % of germination compared 39.4% germination of non-desiccated seeds. Hence fast desiccated and decoated G. imberti seeds pre-treated with GA3 on subsequent exposure to light alleviated dormancy. For seed banking, fast desiccated seeds with MC in between 40-20% are found to be promising.

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Published

31-05-2019

How to Cite

1.
Anto M, Angala M, Jothish PS, Anilkumar C. Conservation of Garcinia imberti Bourd. through seeds. Plant Sci. Today [Internet]. 2019 May 31 [cited 2024 Nov. 4];6(2):243-51. Available from: https://horizonepublishing.com/journals/index.php/PST/article/view/518

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