01632naa a2200253 a 450000100080000000500110000800800410001910000160006024502040007626000090028052008320028965000120112165300140113365300250114765300210117265300230119365300140121665300160123065300230124665300320126965300170130170000150131877300450133316482312023-04-18       1995    bl uuuu     u00u1 u    #d1 aVOLAIRE, F.  aEffects of drought on water relations, mineral uptake, water-soluble crabohydrate accumulation and survival of two contrasting populations of cocksfoot (Dactylis glomerata L.).h[electronic resource]  c1995  aThe role of physiological responses in survival of prolonged soil moisture deficit was investigated in vegetative plants of two Dactylis glomerata populations: KM2 (drought-resistant) and Lutetia (susceptible). The plants were grown in 1m-deep soil columns in a controlled environment. After 56 d of full irrigation, water was withheld for 80 d, by which time all soil moisture had been consumed; the plants were then rewatered for a further 19 d. As drought progressed, leaf extension decreased to zero, water status declined, and water-soluble carbohydrates (WSC) at first increased and then decreased. The most pronounced differences between the two populations was that all KM2 tillers survived the drought, but 34% of Lutetia tillers died. In comparison with Lutetia, KM2 was characterized by (a) slower shoot growth rate.  aproline  aCocksfoot  aDactylis glomerata L  aDrought survival  aOsmotic asjustment  aPhosphate  aRoot-growth  aVariety comparison  aWater-soluble carbohydrates  awater-stress1 aTHOMAS, H.  tAnnals of Botanygv.75, p.513-524, 1995.