Eco-physiological basis of drought stress in coffee ( Coffea arabica , L.) in Ethiopia

摘要: Drought and unfavorable temperatures are the major climatic limitations for coffee production in Ethiopia. These expected to become increasingly important several growing areas main factors responsible fluctuations yield. Because of population pressure arable lands most Ethiopia, cultivation has spread towards marginal where water shortage high temperature constitute significant reduction Also, cases, there is resources irrigation during prolonged dry spells which affect growth development plants under different forms phonological phases crop. Such environmental include reduced rainfall both majorly contribute drought. Arabica (Coffea arabica, L.) a shade adapted plant natural multi-strata forest ecosystems with occurrence wild populations However, these fragmented forests their coverage shrinking from time time, largely due anthropogenic activities. As result, either replaced by other crops or its expanding into less suitable open-sun conditions. coupled increasing patterns climate change threatening country, as well gene pools Arabic coffee. Coffee genetic believed possess desirable traits, including yielding, superior quality, resistance diseases, tolerant moisture stress agronomic traits. Nonetheless, underlying adaptation strategies that take account remain little understood fully exploit wealth ecological diversity released varieties landraces Ethiopia can be broadly classified three canopy classes open, medium compact crown types relations vary accordingly. To this end, information on eco-physiological traits (genetically fixed traits) identifying drought cultivars specific geographical very crucial would also help predicting future field performances genotypes varying Agronomic measures against control, such shading, irrigation, density planting use resistant alternative solutions tolerance cultivation. In review we highlighted some aspects stresses addition focusing our attention eco-physiology Ethiopian situations. The organized sections dealing with: (i) involved tolerance, (ii) physiological approaches determine (iii) findings (iv) photosynthesis crop yield, (v) In-situ Eco-physiological response drought, (vi) methods controlling and, (vii) impact responses stress.