caa a22 4500 477110258 CHVBK 20180405111606.0 cr unu---uuuuu 170330e19960401xx s 000 0 eng 10.1007/BF00012060 doi (NATIONALLICENCE)springer-10.1007/BF00012060 Yield and water use of wheat ( Triticum aestivum ) in a Mediterranean environment: Cultivar differences and sowing density effects [Elektronische Daten] [Riki van den Boogaard, Erik Veneklaas, John Peacock, Hans Lambers] Yield of eight wheat cultivars was evaluated under rainfed and irrigated conditions in a Mediterranean environment. Variation in grain yield resulted from variation in both aboveground biomass production and in harvest index. Under rainfed compared to irrigated conditions, grain yield, biomass and days to heading were decreased, whereas harvest index was increased. Grain yield of the different cultivars under rainfed conditions correlated with that under irrigated conditions in one of the two years. Among cultivars, harvest index under rainfed and irrigated conditions were correlated in both years. Water was used more efficiently for biomass production, and equally efficiently for grain production, under irrigated compared to rainfed conditions. Under rainfed conditions, crop water use efficiency was higher for cultivars developed for rainfed environments than for those developed for high-rainfall or irrigated environments. Cultivars with low-rainfall target environments had the lowest evapotranspiration under rainfed conditions. Under rainfed conditions, differences between the cultivar groups in crop water use efficiency corresponded with trends in water use efficiency of individual plants and with the ratio of photosynthesis to transpiration, measured on plants grown in a growth room. Early in the season, water was used more efficiently for biomass production at high sowing densities than at low sowing densities. Through faster biomass production and ground cover a smaller proportion of the evapotranspired water was lost in soil evaporation and a larger proportion was transpired. However, the net effect was a greater water use in the early phases of growth and consequently a lower water availability later in the season, leading to similar yields regardless of sowing density. Kluwer Academic Publishers, 1996 evapotranspiration nationallicence grain yield nationallicence irrigation nationallicence plant density nationallicence water use efficiency nationallicence wheat nationallicence van den Boogaard Riki Department of Plant Ecology and Evolutionary Biology, Utrecht University, P.O. Box 800.84, 3508 TB, Utrecht, The Netherlands aut Veneklaas Erik Department of Plant Ecology and Evolutionary Biology, Utrecht University, P.O. Box 800.84, 3508 TB, Utrecht, The Netherlands aut Peacock John International Center for Agricultural Research in the Dry Areas, P.O. Box 5466, Aleppo, Syria aut Lambers Hans Department of Plant Ecology and Evolutionary Biology, Utrecht University, P.O. Box 800.84, 3508 TB, Utrecht, The Netherlands aut Plant and Soil Kluwer Academic Publishers; http://www.wkap.nl 181/2(1996-04-01), 251-262 0032-079X 181:2<251 1996 181 11104 https://doi.org/10.1007/BF00012060 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00012060 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- van den Boogaard Riki Department of Plant Ecology and Evolutionary Biology, Utrecht University, P.O. Box 800.84, 3508 TB, Utrecht, The Netherlands aut NATIONALLICENCE 700 1- Veneklaas Erik Department of Plant Ecology and Evolutionary Biology, Utrecht University, P.O. Box 800.84, 3508 TB, Utrecht, The Netherlands aut NATIONALLICENCE 700 1- Peacock John International Center for Agricultural Research in the Dry Areas, P.O. Box 5466, Aleppo, Syria aut NATIONALLICENCE 700 1- Lambers Hans Department of Plant Ecology and Evolutionary Biology, Utrecht University, P.O. Box 800.84, 3508 TB, Utrecht, The Netherlands aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; http://www.wkap.nl 181/2(1996-04-01), 251-262 0032-079X 181:2<251 1996 181 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer