Physio-écologie des<i>Atriplex</i>des milieux sableux littoraux

Billard, J. P.; Binet, P

doi:10.1080/00378941.1975.10835595

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…This result was also evident in the earlier work of Ashby and Beadle (1957). However, Billard and Binet (1975) showed a progressive decrease in dry weight with an increase in salinity in all Atriplex species studied. Dry weight of Atriplex triangularis seedlings was not significantly different in various temperature regimes in the absence of NaCl, whereas, addition of0.5% and 1.0%NaCl significantly promoted seedling growth in all temperatures as compared to non-saline controls.…”

supporting

confidence: 86%

The Effect of Salinity and Temperature on the Germination of Polymorphic Seeds and Growth of Atriplex Triangularis Willd.

Khan

Ungar

1984

American J of Botany

150

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Polymorphic seeds of Atriplex triangularis were germinated at various temperatures (5–15 C, 5–25 C, 10–20 C, 20–30 C) and salinity regimes (0 to 1.5% NaCl) in order to determine their germinability and early seedling growth under these conditions. Larger seeds generally had a higher germination percentage in saline medium. The rate and percentage of germination decreased with increased salinity stress. A thermoperiod of 25 C day and 5 C night, 12 hr/12 hr, temperature enhanced germination of seeds. Early seedling growth is promoted in larger seeds at lower salinity, and at high‐day and low‐night temperatures. Polymorphic seeds have different physiological requirements which provide alternative situations for seed germination in natural habitats.

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supporting

confidence: 86%

The Effect of Salinity and Temperature on the Germination of Polymorphic Seeds and Growth of Atriplex Triangularis Willd.

Khan

Ungar

1984

American J of Botany

150

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“…(Boucaud 1972) ou Salicornia stricta (Langlois 1967) ont un rtel besoin en sel pour accomplir leur cycle vtgttatif. D'autres au contraire, les halophytes facultatives tels les Atriplex des milieux sableux littoraux (Billard et Binet 1975) sont capables de croitre en prtsence de sel, mais se dtveloppent le plus souvent mieux en son absence. L'adaptation de ces vtgttaux aux milieux hypersalins est like A leur capacitt A maintenir un bas potentiel hydrique par accumulation des ions et sptcialement de Na+ dans leurs tissus foliaires.…”

Section: Introductionunclassified

Modifications électrophorétiques des protéines solubles foliaires de Suaeda maritima var. macrocarpa, Atriplex hortensis et Phaseolus vulgaris en relation avec la teneur en NaCl du milieu de culture

Billard¹,

Binet²,

Boucaud³

1982

Can. J. Bot.

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Modifications electrophoretiques des proteines solubles foliaires de Suaeda maritimavar. macrocarpa, Atriplex hortensis et Phaseolus vulgaris en relation avec la teneur en NaCl du milieu de culture R e~u le 14 dtcembre 1981 BILLARD, J. P., P. BINET et J. BOUCAUD. 1982. Modifications ClectrophorCtiques des prottines solubles foliaires de Suaeda maritima var. macrocarpa, Atriplex hortensis et Phaseolus vulgaris en relation avec la teneur en NaCl du milieu de culture. Can. J. Bot. 60: 1590-1595. L'Ctude de la croissance et du mCtabolisme des jeunes plantes en milieu salC, permet de les classer selon une sensibilitk croissante au NaC1: Suaeda maritima (L.) Dum. var. tnacrocarpa Moq., Atriplex hortensis L. et Phaseolus vulgaris L. L'influence de la salinitC sur 1'Cvolution des protCines solubles foliaires a t t t comparke chez ces trois plantes cultivtes sur des solutions nutritives plus ou moins riches en sel. L'examen des ClectrophorCgrammes souligne la stabilitC qualitative de ces macromol~cules protiiques. L'halophyte obligatoire, Suaeda maritima var. macrocarpa prtsente un protCnome caractCrisC par sa richesse en protkines de haut poids molCculaire quelle que soit la concentration en NaCl du milieu de culture. Chez Atriplex hortensis, plante resistante au sel et qui accumule le Na+ dans ses parties atriennes, le sel induit une augmentation progressive de la synthbe d'une fraction protkique de haut poids molCculaire. Par contre, Phaseolus vulgaris, tres sensible au NaC1, ne transporte pas le ~a + dans les tissus analyses. Chez cette espkce le sel n'induit pas de variations dCcelables des protCines solubles. La synthkse accrue ou le maintien des protCines solubles de haut poids molCculaire chez les plantes, rtsistante ou halophile, reflkterait un mtcanisme d'adaptation aux milieux hypersalins. BILLARD, J. P., P. BIMET, and J. BOUCAUD. 1982. Modifications Clectrophorttiques des protCines solubles foliaires de Suaeda maritima var. macrocarpa, Atriplex hortensis et Phaseolus vulgaris en relation avec la teneur en NaCl du milieu de culture. Can. J. Bot. 60: 1590-1595. The study of the growth and metabolism of young plants grown in the presence of salt enables their classification according to their increasing sensitiveness to NaCI: Suaeda maritima (L.) Dum. var. macrocarpa Moq., Atriplex hortensis L. and Phaseolus vulgaris L. The influence of salinity on the evolution of soluble leaf proteins was compared in the three plants grown on culturing solutions more or less rich in salt. Examination of electrophoregrams emphasizes the qualitative stability of the protein macromolecules. The protenome of the obligate halophyte Suaeda maritima var. macrocarpa is characterised by its richness in high molecular weight proteins. With Atriplex hortensis, a salt-resistant plant, accumulating ~a + in its aerial organs, the salt induces a progressive increase of the synthesis of a high molecular weight proteinaceous fraction. In contrast, Phaseolus vulgaris, a plant very sensitive to NaC1, does not transport Na+ into the tissues analyz...

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Germination ecology of halophytes

Ungar

1982

Tasks for Vegetation Science

101

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Physio-écologie desAtriplexdes milieux sableux littoraux

Cited by 4 publications

References 10 publications

The Effect of Salinity and Temperature on the Germination of Polymorphic Seeds and Growth of Atriplex Triangularis Willd.

The Effect of Salinity and Temperature on the Germination of Polymorphic Seeds and Growth of Atriplex Triangularis Willd.

Modifications électrophorétiques des protéines solubles foliaires de Suaeda maritima var. macrocarpa, Atriplex hortensis et Phaseolus vulgaris en relation avec la teneur en NaCl du milieu de culture

Germination ecology of halophytes

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