caa a22 4500 397521553 CHVBK 20180308164634.0 cr unu---uuuuu 161202e199508 xx s 000 0 eng 10.1093/jxb/46.8.947 doi (NATIONALLICENCE)oxford-10.1093/jxb/46.8.947 Soil-plant water relations, root distribution and biomass partitioning in Lupinus albus L. under drought conditions [Elektronische Daten] [M.L. Rodrigues, C.M.A. Pacheco, M.M. Chaves] Lupinus albus L. from different climatic origins responded to a 15 d period of water shortage during flowering by losing 50% of the total leaf canopy and gaining 55% in stem dry weight. Water deficits also led to a significant increase in the fine root length density and a slight increase in the fine root dry weight. The latter increase was especially pronounced in the deeper soil layers. Some marginal differences among genotypes were observed in the responses. Stomatal closure by midday was an early response to water deficit, giving rise to constant predawn leaf water potentials during the first week of water shortage in spite of a decrease of 60% in the available soil water. No osmotic regulation or adjustments of the cell wall properties were observed in any of the lupin lines. We explained the maintenance of seed production in water-stressed plants by their ability to accumulate assimilates in the shoot, which would be diverted to the pods during the seed filling stage. © Oxford University Press Research Papers nationallicence Biomass partitioning nationallicence drought nationallicence Lupinus albus nationallicence root distribution nationallicence water relations nationallicence Rodrigues M.L. Instituto Superior de Agronomia, Universidade Tecnica de Lisboa, Tapada da Ajuda, P-1399 Lisboa Codex, Portugal aut Pacheco C.M.A. Instituto Superior de Agronomia, Universidade Tecnica de Lisboa, Tapada da Ajuda, P-1399 Lisboa Codex, Portugal aut Chaves M.M. Instituto Superior de Agronomia, Universidade Tecnica de Lisboa, Tapada da Ajuda, P-1399 Lisboa Codex, Portugal aut Journal of Experimental Botany Oxford University Press 46/8(1995-08), 947-956 0022-0957 46:8<947 1995 46 exbotj https://doi.org/10.1093/jxb/46.8.947 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/jxb/46.8.947 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rodrigues M.L. Instituto Superior de Agronomia, Universidade Tecnica de Lisboa, Tapada da Ajuda, P-1399 Lisboa Codex, Portugal aut NATIONALLICENCE 700 1- Pacheco C.M.A. Instituto Superior de Agronomia, Universidade Tecnica de Lisboa, Tapada da Ajuda, P-1399 Lisboa Codex, Portugal aut NATIONALLICENCE 700 1- Chaves M.M. Instituto Superior de Agronomia, Universidade Tecnica de Lisboa, Tapada da Ajuda, P-1399 Lisboa Codex, Portugal aut NATIONALLICENCE 773 0- Journal of Experimental Botany Oxford University Press 46/8(1995-08), 947-956 0022-0957 46:8<947 1995 46 exbotj Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford