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Volume 6 Journal of Plant Biochemistry & Physiology
ISSN: 2329-9029 Plant Science 2018
October 29-30, 2018
October 29-30, 2018 | Valencia, Spain
6th Global Summit on Plant Science
J Plant Biochem Physiol 2018, Volume 6
DOI: 10.4172/2329-9029-C1-003
Measuring extent of restoration using coffee (Coffea arabica L.) as a bioassay plant species
Habtamu Chekol
Addis Ababa University, Ethiopia
This study was undertaken as part of the ongoing biological restoration efforts at the center for indigenous trees propagation
and biodiversity development in Ethiopia (50-55 Km west of Addis Ababa, 09°01'188" N; 038°21'566" E). The main objective
of the study was to measure extent of restoration over a degraded landscape using Coffea arabica L. as a bioassay plant. In order
to measure this, the phrase restoration bioassay was coined for coffee plants which were established beneath Acacia abyssinica,
Croton macrostachyus and Euclea divinorum. The trees were regenerated after 5-6 years` of intensive restoration activities. All
the vegetative and reproductive responses were quantified on randomly selected 3 to 5 year old coffee plants. The results showed
that mean number of lateral stem branch, leaves, leaf area and internodal lengths were significantly (P<0.05) greater for those
established beneath the shades of E. divinorum for 3-4 years, compared to those beneath the C. macrostachyus and A. abyssinica
shades. Further, key biological indices such as mean number of fruiting nodes, berries per node, mature red berries harvested
per plant, fresh weight of berries, size and weight of beans, bean to berry weight ratio, weight per 1000 beans and coffee bean
yield (g/tree) were all significantly (P<0.05) higher for coffee plants established under the shade of A. abyssinica than those
established under the shades of C. macrostachyus and E. divinorum and on less restored area. Significant (P<0.001) differences in
the numbers of flower buds and flower numbers were observed between the control and the treatment groups where, GA3 levels
of 100, 250 and 350 mg l-1 were sprayed. This study showed that restoring native trees, shrubs, herbs and grasses over a degraded
landscape restores key stone natural resources with far reaching positive consequences on economic growth, food security,
biodiversity and livelihood restoration. We therefore, recommend that landscape restoration using native trees and shrubs must
be scaled up using mechanisms detailed in this thesis. Further, Ethiopia`s nature and natural resources have been dilapidated
for generations, since the nation`s poverty has been the direct consequences of these actions and biological restoration must be
considered as Ethiopia`s prior agenda both by lawmakers and the government that enforces the laws.