Morphological Responses of a Light-Demanding Alstonia scholaris and a Shade-Tolerant Eusideroxylon zwageri to the Air Humidity and Light Intensity

The response of tropical trees to the change of light intensity has been reported to be varied among different species. Some reports argued that the growth was increasing parallel to the increasing of light intensity, but other reports mentioned that the sensitivity to the light intensity was depending on the species. Another environmental factor that has been scientifically proven to affect tree growth is humidity. While humidity itself also directly affected by the light intensity in the forest ecosystems. Therefore, it is possible that the growth pattern of trees under different light intensities is also affected by air humidity under the canopy. This research aimed to study the growth response of a light-demanding Alstonia scholaris and a shade-tolerant Eusideroxylon zwageri to the different levels of air humidity and light intensity. The experiment was conducted in Jambi, Indonesia from April to November 2019. The experiment was carried out using split plot design with factorial treatments. The main plot was the air humidity with three levels and the sub plots was light intensity with five levels. Four replicates were applied. In general, the A. scholaris tends to be more sensitive to the humidity and light intensity compared to E. zwageri. In particular, A. scholaris tends to be more sensitive to the light intensity while, E, zwageri is more sensitive to the humidity. However, there is also strong indication that the effects of light intensity to the growth, especially for A. scholaris, was affected by the humidity level.

Phytochemical and Therapeutic Potential of Alstonia scholaris R. Br.- A Magical Traditional Plant

Alstonia scholaris R.Br. commonly known as devil tree is a potential medicinal plant belongs to the family Apocynaceae. Endemic to the geographical areas like India, China and Bangladesh. From the ancient times it is an important medicinal plant containing medicinal potential viabilities to treat number of health condition such as stomach ache, diarrhea, abdominal disorders etc. using various preparations like decoctions, powders etc. Its parts can be administered for the treatment of various diseases. The morphological, organoleptic and microscopic characteristics are also established. It is reported to be rich source of alkaloids. Also, it contains chemical constituents like irioids, coumarins, sugars, oils, phenolics etc. The phytochemical constituents contained in each part are described in the present review. The plant was investigated by the scientists, researchers while performing the experiments on animals they concluded that the plant have pharmacological properties such as antimicrobial, antidiarreal, antitussive, antiasthmatic, immunostimulatory, antidiabetic etc. which are discussed in the article.

A Study of Adsorption Dynamics of Biologically Active Plants

Alstonia scholaris is a biologically active and important Devil tree. The medicinal importance pharmacology importance in particulars antiulcer activity of Alstonic scholaris in albino rats were Analyzed and reported. The juice of Alstona scholaris to rats show a remarkable record with respect to ranitidine tablet (to cure ulcer). This result initiate the author to study chemo mimetic nature of plant material for the removal of heavy metal in synthetic solution also extended studies with modified Alstonia scholaris and Wrichitia Tinctoria. An adsorption of 96% in all the cases was observed. A linear correlation with R2 value of 0.977 was calculated from the linear plot of optical densities of Alstonia Scholaris and modified Alstonia Scholaris similar trend in adsorption was also noted. In the case of Wrightia Tinctoria instead of modified Alstonia Scholaris