PJB-2018-626
EFFECT OF ALBIZIA LEBBECK (L.) BENTH. ON SEED GERMINATION AND SEEDLING GROWTH OF ZEA MAYS, TRITICUM AESTIVUM AND SETARIA ITALICA
Rehmanullah
Abstract
A varieties of bioactive compounds are synthesized in the plant tissues. The biochemicals are often showing inhibitory effect to other plants growing in the vicinities. In the current study, allelopathic potential of the pod and leaves of Albizia lebbeck (Mimosaceae) with aqueous extracts, hot water extract, litter and mulches was assessed on different growth parameters of Zea mays, Triticum aestivum and Setaria italica. The results obtained showed significant inhibition on germination rate and variable degree of seedling growth inhibition, reduction of fresh and dry biomasses of all the three test species. The inhibitory potential was found to be dose and time dependent. Thus, inhibition shows a linear relation to concentration and soaking time. The results additionally showing that allelochemical concentration would be higher in leaves than pod for comparatively high degree of inhibition showed by leaves extract. The litter and mulch bioassay also revealed the inhibitory effect on different growth parameters of the test plants. This study emphasized that the allelopathic effect and degree of inhibition and retardation depends on the species both donor and receptor, and the concentration of the allelochemical. The study revealed that Albizia lebbeck extract had an allelopathic effect on the growth of economically important plant species used in this research work, a finding that has not been reported previously.
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