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Contrasting seed biology of two ornamental palms: Pygmy Date Palm (<em>Phoenix roebelenii</em> O’Brien) and Fishtail Palm (<em>Caryota urens</em> L.)

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Title Statement Contrasting seed biology of two ornamental palms: Pygmy Date Palm (<em>Phoenix roebelenii</em> O’Brien) and Fishtail Palm (<em>Caryota urens</em> L.)
 
Added Entry - Uncontrolled Name Prakash, Krishna
Chaudhury, Rekha
Rohini, M R
Singh, Badal
Malik, S K
 
Uncontrolled Index Term Caryota urens; Cryo-exposure; Ex situ conservation; Phoenix roebelenii; Seed desiccation
 
Summary, etc. The Arecaceae family includes palm trees of economic importance both as a source of agricultural produce and as<br />ornamental components in landscaping projects. Pygmy date palm (Phoenix roebelenii) and solitary fishtail palm (Caryota<br />urens) are well known landscaping plants today. Both species have their origin in Southeast Asia and, especially C. urens is<br />widespread in peninsular India and Sri Lanka. They are multipurpose species with a variety of applications and thus very<br />heavily utilized. Knowledge of palm seed storage biology will improve their conservation prospects. In present studies, fresh<br />seed moisture content in P. roebelenii was recorded to be 30% with germinability of 98%. After desiccation to 8% moisture<br />germinability was reduced to 90% and the seeds survived cryo-exposure. Fresh seeds of C. urens, with initial moisture<br />content of 34% and 95% germinability could be desiccated to lowest level of only 29% moisture content, with complete loss<br />of germinability. Fresh as well as desiccated seeds of this species did not survive cryo-exposure. While the seeds of C. urens<br />stored at room temperature lost their germinability by 110 days, seeds of P. roebelenii could germinate even after 9 months<br />of storage. P. roebelenii is proven to exhibit orthodox seed storage behaviour while C. urens is found to exhibit recalcitrant<br />seed storage behaviour. Long-term ex situ cryo-conservation in the form of seed gene banks would be suitable for seed<br />propagated orthodox palm species and a few germplasm centres may be established for recalcitrant Indian palms in suitable<br />bio-geographic regions as a complimentary ex situ conservation.<br /><br />
 
Publication, Distribution, Etc. Indian Journal of Traditional Knowledge (IJTK)
2019-07-18 15:58:02
 
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http://op.niscair.res.in/index.php/IJTK/article/view/26804
 
Data Source Entry Indian Journal of Traditional Knowledge (IJTK); ##issue.vol## 18, ##issue.no## 3 (2019): Indian Journal of Traditional Knowledge
 
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