publication . Article . 1990

Effet d'un déficit hydrique sur le trèfle blanc (Trifolium repens L.). I. Importance du cultivar

L. Shamsun Noor; C. Robin; D. Schontz; T. Heulin; A. Guckert;
Open Access French
  • Published: 01 Jan 1990
  • Publisher: HAL CCSD
  • Country: Morocco
Abstract
The effects of successive water stress and irrigation on white clover (Trifolium repens L cv Crau) photosynthetic activity, nitrogen fixation, predawn leaf water potential and stomatal resistance were studied in relation to potassium supply. Water deficit induced a gradual decrease in the predawn leaf water potential and a rapid stomatal closure (figs 1 and 2). Nitrogen fixation and photosynthetic activity were also reduced (fig 4 and table I). The decrease in nitrogen fixation activity was significantly lower with K supply (fig 4). For the same water potential and the same stomatal resistance, nitrogen fixation activity (ARA’s method) was higher in presence of ...
Subjects
free text keywords: [SDV.SA]Life Sciences [q-bio]/Agricultural sciences, [SDV.EE]Life Sciences [q-bio]/Ecology, environment, Sciences agricoles, Agricultural sciences, plante fourragère, légumineuse, potassium, stomate, sécheresse, potentiel hydrique, photosynthèse, azote, Botany, Drought resistance, Cultivar, Water deficit, Biology, Trifolium repens, biology.organism_classification
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publication . Article . 1990

Effet d'un déficit hydrique sur le trèfle blanc (Trifolium repens L.). I. Importance du cultivar

L. Shamsun Noor; C. Robin; D. Schontz; T. Heulin; A. Guckert;