Dampak Perubahan Iklim Terhadap Fenologi Phaseolus vulgaris L Faklutas Biologi Universitas Jenderal Soedirman

Abstract

Climate change is a condition characterized by changing world climate patterns which results in erratic weather phenomena. Altitude is one of the climate control factors that have a strong influence on air temperature. There is a correlation between changes in air temperature and altitude in Indonesia. The increase in altitude causes the air temperature to decrease and the O2 content is getting thinner. Altitude also affects the biophysics and reproduction of agricultural plants a lot, which includes the response of a decrease in temperature to the growth of agricultural plants and their production. This study aims to determine the effect of climate change on the flowering phenology of green beans (Phaseolus vulgaris L.) and the diversity of insect pollinators. Sampling was done by purposive sampling to collect flower data while Scan sampling was used to collect insect data. Samples were taken as many as 24 bean plants from the population at each location. There are six locations, namely 50 m asl, 200 m asl, 400 m asl, 600 m asl, 800 m asl, and 1,000 m asl. Plant parameters observed were plant height, number of leaves, number of branches, number of flowers, size of flowers and time of bloom and diversity of insect pollinators. The data obtained were analyzed using analysis of variance (ANOVA) and regression correlation analysis. The results of the analysis showed the influence of altitude on the time the flowers first appeared, the number of flowers and flower size. Beans grow and develop optimally at an altitude of 800 - 1,000 m asl.