Impact of fast and slow desiccation on Garcinia imberti seed and seedling vigour

Authors

  • M Anto JNTBGRI, Palode, Thiruvananthapuram 695562, Kerala, India
  • C Anilkumar JNTBGRI, Palode, Thiruvananthapuram 695562, Kerala, India

DOI:

https://doi.org/10.14719/pst.2018.5.3.398

Keywords:

Agasthyamala Biosphere Reserve, Desiccation, Moisture content, Recalcitrant seed, Seed storage practises

Abstract

Garcinia imberti Bourd. endemic to the southern Western Ghats is classified as endangered by the IUCN (2018). The seeds as the sole means of propagation with initial moisture content (MC) of 62.8% are sensitive to desiccation. Studies on the responses of the seed to drying require ascertaining of the critical moisture content (CMC) as a basic requisite for germplasm conservation. Responses of G. imberti seeds to fast drying with activated silica gel (25 ± 2 °C, 6 ± 1% RH) and to slow drying under laboratory conditions (28 ± 2°C, 60 ± 2% RH) were evaluated for seed and seedling vigour. When the MC was reduced to 56% by 48 hours of slow drying or 6 hours of fast drying, 75 to 90% normal seedlings were produced respectively. In the case of fast dried seed (6 hours), seed associated parameters except mean germination time showed peak values with maximum germination and enhanced root length. Below the CMCs of 16.4 and 26.3% (fast and slow drying respectively), half of the tested seeds become non viable. Thus for germplasm conservation the present study proposes 6 hour’s of fast drying to retain viability and normal seedling development of G. imberti.

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Published

06-07-2018

How to Cite

1.
Anto M, Anilkumar C. Impact of fast and slow desiccation on Garcinia imberti seed and seedling vigour. Plant Sci. Today [Internet]. 2018 Jul. 6 [cited 2024 Nov. 4];5(3):95-102. Available from: https://horizonepublishing.com/journals/index.php/PST/article/view/398

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Research Articles