Efektivitas Fungi Mikoriza Arbuskula Terhadap Pertumbuhan dan Kadar Klorofil Tanaman Singkong (Manihot esculenta Crantz) Pada Kondisi Cekaman Kekeringan

Abstract

Drought stress in cassava plants (Manihot esculenta Crantz) can disrupt plant physiological processes, especially the process of photosynthesis reducing chlorophyll content. The use of Arbuscular Mycorrhizal Fungi (AMF) R. irregularis and multi species can be an alternative to reduce the impact of drought stress on cassava. The aim of this research is to analyze the effect of AMF inoculation on chlorophyll content during drought stress. This research was conducted using a Completely Randomized Design (CRD) with 5 repetitions. The research method was carried out in stages: preparation of materials (cassava stem, soil, and AMF inoculum), adaptation and drought stress treatment in the greenhouse, upper biomass weighing, measurement of chlorophyll content, calculation of mycorrhizal response to upper biomass, and data analysis. Data analysis was carried out using the two way ANOVA test (Tukey test or HSD (Honestly Significant Difference)) and the Pearson correlation test, using R Studio software. The results showed that drought stress reduced the upper biomass and chlorophyll content of cassava plants. The application of multi-species AMF or R.irregularis did not have a significant effect on increasing upper wet biomass and chlorophyll content of cassava plants. However, there was a significant positive correlation between the increase in chlorophyll content in plants inoculated with R. irregularis and the number of leaves. The more chlorophyll content increase, the more the number of leaves increases.