Growth physiological response yield and phytochemical content of Vernonia amygdalina as affected by different light intensities growing media and harvest times

Mohamed Mahmud Tengku Muda, . and Martini Mohammad Yusoff, . and Azizah Misran, . and Ali Ghazemsadeh, . and Nursuhaili A. Bakar, . and Farrah Melissa Muharam, . Growth physiological response yield and phytochemical content of Vernonia amygdalina as affected by different light intensities growing media and harvest times. pp. 72-84. ISSN 2672-7226

Vernonia amygdalina Del. is a botanical plant used for self-medication purposes. It is important to understand its acclimatization process which is influenced by abiotic factors and agronomic practices on growth performance. The present study was conducted to determine the optimum light intensity growing media and harvest time required to maximize the growth performance of V. amygdalina. The treatments consisted of three light intensities (30 50 and 100) four growing media (soil cocopeat empty fruit bunch and burnt paddy husk) and six harvest times. The highest biomass yield of V. Amygdalina was achieved with exposure to 50 light intensity. Highest plant height and specific leaf area were found on V. amgdalina grown under 30 light intensity while 50 light intensity attained the highest photosynthetic rate on empty fruit bunch growing media. Both total phenolic and flavonoid contents of V. amygdalina increased when harvested at 9 and 18 weeks after transplanting. Therefore the practice of using oil palm empty fruit bunch with 50 of light intensity exposure and harvest at 18 weeks after transplanting is recommended to optimize the growth and phytochemicals yield of V. amygdalina.

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Abstract

Vernonia amygdalina Del. is a botanical plant used for self-medication purposes. It is important to understand its acclimatization process which is influenced by abiotic factors and agronomic practices on growth performance. The present study was conducted to determine the optimum light intensity growing media and harvest time required to maximize the growth performance of V. amygdalina. The treatments consisted of three light intensities (30 50 and 100) four growing media (soil cocopeat empty fruit bunch and burnt paddy husk) and six harvest times. The highest biomass yield of V. Amygdalina was achieved with exposure to 50 light intensity. Highest plant height and specific leaf area were found on V. amgdalina grown under 30 light intensity while 50 light intensity attained the highest photosynthetic rate on empty fruit bunch growing media. Both total phenolic and flavonoid contents of V. amygdalina increased when harvested at 9 and 18 weeks after transplanting. Therefore the practice of using oil palm empty fruit bunch with 50 of light intensity exposure and harvest at 18 weeks after transplanting is recommended to optimize the growth and phytochemicals yield of V. amygdalina.

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Item Type:	Article
AGROVOC Term:	Vernonia
AGROVOC Term:	Herbaceous plants
AGROVOC Term:	Physiological response
AGROVOC Term:	Light
AGROVOC Term:	Growing media
AGROVOC Term:	Harvesting
AGROVOC Term:	Acclimatization
AGROVOC Term:	Phytochemistry
AGROVOC Term:	Yields
AGROVOC Term:	Flavonoids
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/10718

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