Naraganahalli Dasappa YOGENDRA
Central Institute of Medicinal and Aromatic Plants, Research Center,
560065, Bengaluru – India
Academy of Scientific and Innovative Research (AcSIR), 201002,
Ghaziabad – India
Rajesh RAVI KUMARA
Central Institute of Medicinal and Aromatic Plants, Research Center,
560065, Bengaluru – India
Paddambail Ellianna KEERTHI
Central Institute of Medicinal and Aromatic Plants, Research Center,
560065, Bengaluru – India
Thankaswamy ARUL PRAKASH
Central Institute of Medicinal and Aromatic Plants, Research Center,
560065, Bengaluru – India
Velusamy SUNDERASAN
Central Institute of Medicinal and Aromatic Plants, Research Center,
560065, Bengaluru – India
Academy of Scientific and Innovative Research (AcSIR), 201002,
Ghaziabad – India
https://doi.org/10.47743/jpd.2024.31.1.951
Keywords: bundle sheath extensions (BSEs), oil
glands, patchouli, phenotypic plasticity, shade stress.
Abstract: The study was conducted to assess the
patchouli crop responses to varying light intensities: full-sunlight
(open-condition), 30% shade, and 50% shade. It showed notable
variations in growth, development, essential oil yield, and chemical
composition between full-sunlight and partial-shade conditions.
Plants grown in 50% shade exhibited significant increases in height
(113.83 cm), inter-nodal length (8.81 cm), leaf area (59.17 cm2),
petiole length (3.78 cm), and width (3.44 mm) compared to open
conditions. However, reductions in branches/plant (14.26), fresh
weight (152.95 g), dry weight (29.64 g), leaf thickness (117.57
µm), number of trichomes (13.14 no./mm2), number
of oil glands (10.14 no./mm2), and oil content (0.98%)
were observed in 50% shade plants compared to open conditions.
Anatomical modifications like bundle sheath extensions (BSEs)
were present in 30% and 50% of shade-grown plants but absent in
open-condition-grown plants.
How to cite this article:
YOGENDRA N. D., RAVI KUMARA R., KEERTHI P. E., ARUL PRAKASH T.
& SUNDARESAN V. 2024. Shade-induced phenotypic plasticity
and its impact on the economic traits of Patchouli, Pogostemon
cablin (Blanco) Benth., a high-value aromatic crop. J.
Plant Develop. 31: 53-64
https://doi.org/10.47743/jpd.2024.31.1.951
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