The effect of light intensities on morpho-physiological and biochemical of black pepper (Piper nigrum L.)

The difference in the levels of light intensity was responded with changes morphophysiological and biochemical characters plants, especially leaves black pepper. aim this study to determine effect several on research conducted July - November 2017 Kemuja, Mendobarat, Bangka Belitung. This used split-plot design three replications. main plots were intensity, namely 100%, 75%, 50%. Subplots varieties pepper, Petaling 1, 2, Nyelungkup. results showed that there no interaction between intensities. responses tested same at all intensity. Light up 50% has leaf morphological characters, but become thinner lower Chlorophyll, nitrate reductase activity sucrose concentration intensities Plants exposed higher have a number stomata. concluded did not cause morphology biochemistry only affected stomata density.