PJB-2019-381
AUXIN-PRODUCING PLANT GROWTH RHIZOBACTERIA (PGPR) PROMOTES ROOT FORMATION OF EPIPREMNUM AUREUM CUTTINGS
HALUK CAGLAR KAYMAK
Abstract
An attempt was made to induce rooting from cuttings of Epipremnum aureum by auxin-producing plant growth promoting rhizobacteria (PGPR) treatments under fully controlled greenhouse conditions. Agrobacterium rubi A-16, Bacillus megaterium M-3, TV-91C and TV-6D were used as rooting agents. The rooting percentage was higher (51.67-75.00%) in all bacteria strain treatments as compared to control (36.67%). Root and shoot length was greater in cuttings treated with Agrobacterium rubi A-16 compared with other treatments. The lowest root and shoot length was obtained in the control. The dry matter content of roots varied from 7.27% (M-3) to 8.33% (A-16). The highest new leaf number (2.97) was observed on cuttings treated with TV-6D followed by 2.87 in treatment TV-91C. The leaf area and chlorophyll content varied from 8.41 cm2 (control) to 10.32 cm2 (M-3) and 22.60 (TV-6D) to 25.97 (TV-91C), respectively. These results of this study suggest that Agrobacterium rubi A-16 may also possess a great potential for promoting root formation and highest net profit for producers in Epipremnum aureum and other ornamental species difficult for vegetative propagation.
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