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dc.creatorHaffani,Sywar
dc.creatorMezni,Majid
dc.creatorChaibi,Wided *
dc.date2014-09-01
dc.date.accessioned2019-04-24T21:19:54Z
dc.date.available2019-04-24T21:19:54Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000300003
dc.identifier.urihttp://revistaschilenas.uchile.cl/handle/2250/55895
dc.descriptionThe current challenge of agriculture is to get the best yields while overcoming frequent water deficit conditions. The objective of this study was to compare performances of three vetch species (Vicia narbonensis L., V. sativa L., and V. villosa Roth) subjected to water stress. Plants were sown in pots under rainout shelter and submitted to four water regimes: control (100% field capacity [FC]), 80%, 60%, and 40% FC through 3 yr experiment. Results showed that V. narbonensis had the smallest declines in all the studied variables in response to water restriction but the highest water use efficiency (WUE) and stress tolerance index (STI) in both control and water-treated plants. This indicates the greater tolerance of this species to water constraint and its better water use. Vicia villosa was characterized by drastic declines in leaf area and DM yield (75% and 64%, respectively). It had also the smallest WUE and STI suggesting its low adaptation to water stress. Vicia sativa showed severe reductions in seed yield and yield components; accordingly, it was the most sensitive species in terms of seed yield. The three species implied avoidance strategies to cope with water stress. The different levels of drought tolerance explain the species ecological distribution in Tunisia.
dc.formattext/html
dc.languageen
dc.publisherInstituto de Investigaciones Agropecuarias, INIA
dc.relation10.4067/S0718-58392014000300003
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceChilean journal of agricultural research v.74 n.3 2014
dc.subjectAdaptation
dc.subjectgrowth
dc.subjectVicia spp.
dc.subjectwater stress
dc.subjectwater use efficiency
dc.subjectyiel
dc.titleAgronomic performances of three vetch species growing under different drought levels


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