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. Photochemical and biochemical responses of heliconia (Heliconia stricta ‘Iris’) to different light intensities in a humid coastal environment

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Title . Photochemical and biochemical responses of heliconia (Heliconia stricta ‘Iris’) to different light intensities in a humid coastal environment
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Creator Nihad.K. , Mukesh K. Berwal., K. Balachandra Hebbar., Ravi Bhat., A. Abdul Haris and S. V. Ramesh
 
Subject heliconia,coconut
 
Description Not Available
A field experiment was conducted to evaluate the performance of heliconia (Heliconia stricta ‘Iris’) grown under four levels
of photosynthetically active radiation (PAR) in a randomized block design. Photochemical and biochemical parameters were
recorded to assess the physiological and biochemical changes in heliconia that accompany varying light intensities. The
plants grown under the lowest PAR (30 to 35% of open condition) showed enhanced growth with a higher biomass accumulation,
plant height, suckering habit, emergence of flowering shoots, inflorescence yield, and light use efficiency. The leaves
exposed to high PAR (open condition) recorded reduction in chlorophyll content (60.8%), chlorophyll index (43.9%), and
Fv/
Fm (21.4%) compared to values for the leaves exposed to the lowest PAR (30 to 35%). Plant soluble sugars were reduced
with the increasing PAR, whereas reducing sugar content was high under fully irradiated conditions but showed a decreasing
trend with a reduction in PAR. Total phenolic content and malondialdehyde were lower at 30 to 35% PAR with a reduction in
magnitude of 58.4% and 34.8%, respectively, compared to the open condition. Similarly, super oxide dismutase, peroxidase,
and polyphenol oxidase activities in the leaf decreased 36.2%, 28.7%, and 23.3%, respectively, from the highest PAR (or
open condition) in this range. Improved photochemical and biochemical activities of plants grown under lower light intensities
resulted in production of quality inflorescences. Hence, Heliconia stricta ‘Iris’ can be recommended as an intercrop on
coconut plantations where the light intensity is low (30 to 35%) for improving the livelihood of farmers.
Not Available
 
Date 2021-08-02T18:50:17Z
2021-08-02T18:50:17Z
2019-12-01
 
Type Research Paper
 
Identifier Nihad.K. , Mukesh K. Berwal., K. Balachandra Hebbar., Ravi Bhat., A. Abdul Haris and S. V. Ramesh.2019. Photochemical and biochemical responses of heliconia (Heliconia stricta ‘Iris’) to different light intensities in a humid coastal environment Hortic. Environ. Biotechnol.60:799-808 https://doi.org/10.1007/s13580-019-00173-1
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/52402
 
Language English
 
Relation Not Available;
 
Publisher Hortic. Environ. Biotechnol.60:799-808 https://doi.org/10.1007/s13580-019-00173-1