Growth, photosynthetic pigments and production of essential oil of long-pepper under different light conditions

Abstract

Piper hispidinervum C. DC. is popularly known as long-pepper and it owns a commercial value due to the essential oil it produces. Long-pepper oil is rich in safrole and eugenoln components that have insecticidal, fungicidal and bactericidal activity. It has been establish that to medicinal plants light influences not only growth but also essential oil production. The growth, the content of photosynthetic pigments and the essential oil production of Piper hispidinervum at greenhouses with different light conditions was evaluated. The treatments were characterized by cultivation of plants for 180 days under different light conditions, produced by shading greenhouses with 50% and 30% of natural incident irradiance, two colored shading nets red (RN) and blue (BN) both blocking 50% of the incident radiation and one treatment at full-sun (0% of shade). The results showed that the treatments of 50% shade and RN and BN were the ones which stimulated the greater growth. Blue and red light also had the best production of photosynthetic pigments. Essential oil yielded more under full sun therefore this is the most indicated condition to produce seedlings for the chemical and pharmaceutical industry.

Formation and Comparative Analysis of Full-Length Transcriptome Sequencing and Next Generation Sequencing In Medicago Sativa L. Roots Under Abiotic Stress

“…Some studies have suggested that ABA levels change signi cantly in plants under drought, salinity, and other stressors [44]. Light is an important environmental factor for plant growth [45], and darkness is often used to study light stress in plants [46,47]. M. sativa L. has become a promising crop for use as a bioenergy feedstock; therefore, it is of signi cance to explore the mechanisms of abiotic stress and improve the stress resistance of M. sativa L. during agricultural production.…”

A research on rejuvenation pruning of lavandin (Lavandula x intermedia Emeric ex Loisel.)

“…Sonmez and Okkaoglu (2019) stated that essential oil content of lavender varied between 2.65-4.45%. Factors such as harvest time, genetic, biotic and abiotic, light density, agronomic and geographical conditions may influence the essential oil content (Ceylan et al, 1990;Gupta and Ganjewala, 2015;Lima et al, 2017).…”

The Floral and Scent Characteristics of Lavandin From the Micropropagation and Cutting Propagation

“…The essential oil content of Achillea collina cultivated under low light density decreased (Giorgi et al, 2013). Lima et al (2017) stated that the essential oil content changed in different light conditions, and the essential oil content of the Piper hispidinervum increased under high light density. In addition, factors such as seasons, genetic, biotic and abiotic, and geographical factors may influence the essential oil content (Gupta and Ganjewala, 2015).…”