Caractéristiques hydriques du mil (Pennisetum glaucum (L.) R. Br.) en présence de contraintes hydriques

Radhouane, Leila

doi:10.1016/j.crvi.2007.12.004

Cited by 11 publications

(9 citation statements)

References 27 publications

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“…Plant water status and transpiration, while acting on the growth and development, may be involved in determining the yield of biomass and grain of species. Changes in water characteristics of a plant reflect its water status and its ability to incorporate water, particularly under drought stress (Radhouane, 2008). In dry conditions, the decrease in water potential (Ψ w ) of plants induces an important loss of leaf turgescence (Boyer, 1982;Sorrells et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Goraibr

Neffati

2010

Emir. J. Food Agric

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Abstract:This study aims to compare the growth attributes and water relationship of two-forage legume plants: a crop plant, Medicago sativa (L.) cv. Gabès, and a wild plant, Astragalus gombiformis (Pom.), under drought-stress conditions. Water deficit stress was imposed at 40% and 70% of field capacity (FC) from 60 to 90 days after sowing, while the control pots were maintained at 100% FC throughout the period of entire growth. The results showed that the high potentialities of growth in both species were recorded for control plants. Water deficit reduced growth (whole plant biomass, leaf number, stem elongation rate and shoot relative growth rate) and decreased shoot/root ratio. After 30 days of water deficit stress, the leaf relative water content (RWC) and the water potential (Ψ w ) evolved in such a way and decreased significantly as water stress was intensified. The lowest level of transpiration rate of the most stressed plants may be explained by the lowering of leaf RWC. Under such conditions, the water use efficiency of wild plants was more pronounced than alfalfa plants. It can be concluded that A. gombiformis manifested the best morpho-physiological traits of adaptation to moisture stress when compared to M. sativa. This wild plant appears to be more tolerance to water stress than that cultivated, therefore a possibility of exploitation of this species.

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Section: Introductionmentioning

confidence: 99%

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Goraibr

Neffati

2010

Emir. J. Food Agric

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“…Http://www.granthaalayah.com©International Journal of Research -GRANTHAALAYAH [60][61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76] Four barley genotypes (Hordeum vulgare L.) were used. Three improved varieties (Manel, Rihane and Kounouz) were obtained from Crops Laboratory of the National Institute of Agronomic Research of Tunisia.…”

Section: A Knowledge Repositorymentioning

confidence: 99%

Morphological Characteristics and Water Status of Some Tunisian Barley Genotypes Submitted to Water Stress

Mansouri

Radhouane

2015

Int. J. Res. Granthaalayah

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Tunisia has been qualified as a country vulnerable to climate change that will be unregistered a great drop of annual rainfall and an increase of evaporation. Response strategies of agriculture to drought will be critical because drought is one of the major abiotic stresses which adversely affect crop growth and yield. Among strategies to be developed to cope with the effect of climate change, recourse of genetic diversity and new varietal creation can be a solution among other methods. In this study, four barley genotypes were cultivated in semi-controlled conditions and submitted to three levels of water stress. Data were recorded on number of grain per plant (NGP), one thousand grains weight (PMG), total leaf surface (TLS), plant height (HAT), stomata density (DS), leaf water content (RWC) and leaf water potential (LWP). Results showed that morphological characteristics (HAT, TLS, DS), yield components (NGP, PMG) and water status (LWP, RWC) of barley genotypes were decreased significantly. However, moderate water deficit didn’t affect significantly the most of parameters studied. Study had demonstrated also that barley genotypes developed different strategies and mechanisms to cope with water deficit, based essentially on their osmotic adjustment capacity.

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“…Moreover, many countries already see their water resources becoming scarce and many others experiencing severe shortages in some of their regions. The number of regions in the world suffering from a shortage of fresh water is constantly increasing and users are fighting for access to water (Radhouane, 2009). Tunisia is among the threatened countries by water shortage problem (especially in quality).…”

Section: Introductionmentioning

confidence: 99%

Physiological and biochemical responses of Rhus tripartita (Ucria) grande under water stress

Zouaoui¹,

Ammari²,

Abassi³

et al. 2019

PAK.J.BOT.

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The present study belongs to the program of biodiversity conservation inside BouHedma national Park. Among the plant species in this park, Rhus tripartita (Ucria) Grande, Anacardiaceae, has several interests. Drought tolerance of R. tripartita seedlings subject to different levels of water stress: T (100% FC; 50% FC (S1); 25% FC (S2) and severe (S3) (No watering) based on photosynthetic gas exchange, chlorophyll content and biochemical analysis (soluble sugars and proline) was examined. A highly significant decrease was recorded in photosynthetic gas exchanges, in particular the stomatal conductance which has been diminished to zero with the intensity of water stress (S3). Similarly, leaf transpiration and photosynthetic assimilation are highly affected. These changes were accompanied by a reduction in chlorophyll pigment content (Cha and total chlorophyll content) and stabilization of Chb content. In contrary to that, the water stress induced an accumulation of organic solutes (soluble sugars and proline) in leaves and roots of young plants.

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Caractéristiques hydriques du mil (Pennisetum glaucum (L.) R. Br.) en présence de contraintes hydriques

Cited by 11 publications

References 27 publications

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Differential responses in growth and water relationship of<br>Medicago sativa (L.) cv. Gabès and Astragalus gombiformis (Pom.)<br>under water-limited conditions

Morphological Characteristics and Water Status of Some Tunisian Barley Genotypes Submitted to Water Stress

Physiological and biochemical responses of Rhus tripartita (Ucria) grande under water stress

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