Agrophysiological and biochemical properties associated with adaptation of Medicago sativa populations to water deficit

Farissi, Mohamed; Bouizgaren, Abdelaziz; Faghire, Mustapha; Bargaz, Adnane; Ghoulam, Cherki

doi:10.3906/bot-1211-16

Cited by 20 publications

(22 citation statements)

References 42 publications

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“…), in alfalfa (Farissi et al . ) and in sesame genotypes (Kadkhodaie et al . ) but the magnitude of the increase reportedly depended on the genotype and drought level.…”

Section: Discussionmentioning

confidence: 99%

Application of biochemical markers for the assessment of drought tolerance in alfalfa (Medicago sativa L.) cultivars

2017

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Alfalfa (Medicago sativa L.) cultivars respond differently to drought stress levels and oxidative injury. This may provide us with an important tool to identify the chemical mechanisms operative in drought tolerant genotypes. The present experiment was conducted to determine catalase (CAT), ascorbate peroxidase (APX) and peroxidase (POX) activities; malondialdehyde (MDA) content; herbage yield; stress susceptibility index (SSI); and drought tolerance index (DTI) of 10 alfalfa cultivars under four irrigation regimes (55, 65, 75 and 85% depletion of available soil water). Drought stress was observed to reduce herbage yield but increase CAT, APX and POX activities as well as MDA content; however, such alterations were cultivar‐drought level‐specific. With a few exceptions, Baghdadi had the highest CAT, POX and APX activities and lowest MDA content, lowest reduction in herbage yield and the lowest SSI and the highest DTI under all irrigation regimes suggesting that it was the most adapted and drought‐tolerant cultivar. Herbage yield had a significant and positive correlation with POX and a significant and negative correlation with MDA under all irrigation regimes indicating that they could be used as markers for selecting more drought‐tolerant cultivars in alfalfa. Catalase and APX also had a significant and positive correlation with herbage yield, thus they could be used as markers for selection of more drought‐tolerant cultivars. The results suggested that a wide variation in drought tolerance exists within alfalfa cultivars, thus selection for more drought tolerance is possible. In addition, chemical markers such as POX, CAT and APX activities and MDA content may be used to assist in selection for more drought tolerance cultivar in this species.

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“…), in alfalfa (Farissi et al . ) and in sesame genotypes (Kadkhodaie et al . ) but the magnitude of the increase reportedly depended on the genotype and drought level.…”

Section: Discussionmentioning

confidence: 99%

Application of biochemical markers for the assessment of drought tolerance in alfalfa (Medicago sativa L.) cultivars

2017

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“…The decrease in water‐limited wheat root RWC may be a result of higher DW and length of faba bean roots actively competing for water in this treatment as greater biomass and diameter of roots are paramount traits optimizing water and nutrient acquisition ( Ho et al, 2005). In addition, low P concentration in roots and shoots of the intercropped wheat may be related to the decrease of the root RWC which is considered an indicator of plant water status and capacity to acquire nutrients from the soil as well as a determinant factor for the metabolic activity and survival of leaves ( Krouma , 2010; Farissi et al, 2013). The reduced wheat performance under intercropping and water limitation also coincided with increased rhizosphere soil electrical conductivity (Fig.…”

Section: Discussionmentioning

confidence: 99%

Nodulation and root growth increase in lower soil layers of water‐limited faba bean intercropped with wheat

Bargaz

Isaac

Jensen

et al. 2016

J. Plant Nutr. Soil Sci.

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Below‐ground niche complementarity in legume–cereal intercrops may improve resource use efficiency and root adaptability to environmental constraints. However, the effect of water limitation on legume rooting and nodulation patterns in intercropping is poorly understood. To advance our knowledge of mechanisms involved in water‐limitation response, faba bean (Vicia faba L.) and wheat (Triticum aestivum L.) were grown as mono‐ and intercrops in soil‐filled plexiglass rhizoboxes under water sufficiency (80% of water‐holding capacity) and water limitation (30% of water‐holding capacity). We examined whether intercropping facilitates below‐ground niche complementarity under water limitation via interspecific root stratification coupled with modified nodulation patterns. While no significant treatment effects were measured in intercropped wheat growth parameters, water limitation induced a decrease in shoot and root biomass of monocropped wheat. Likewise, shoot biomass and height, and root length of monocropped faba bean significantly decreased under water limitation. Conversely, water limitation stimulated root biomass of intercropped faba bean in the lower soil layer (15–30 cm soil depth). Similarly, total nodule number of faba bean roots as well as nodule number in the lower soil layer increased under intercropping regardless of water availability. Under water limitation, intercropping also led to a significant increased nodule biomass (48%) in the lower soil layer as compared to monocropping. The enhanced nodulation in the lower soil layer and the associated increase in root and shoot growth provides evidence for a shift in niche occupancy when intercropped with wheat, which improves water‐limited faba bean performance.

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“…Results showed that 'Ameristand 801S' exhibited high forage yield, which is similar to our results. Farissi et al (2013) measured the effect of three water deficit levels in terms of field capacity (FC) (25% FC, 50% FC, and 75% FC) on agro-physiological and biochemical properties of four perennial alfalfa populations of Moroccan origin. They found that DM reduction was very high compared with the optimal treatment (75% FC) and production loss increased with water shortage severity.…”

Section: Fourth Year Of Productionmentioning

confidence: 99%

Measuring the performance of perennial alfalfa with drought tolerance indices

Bellague

M’Hammedi-Bouzina

Abdelguerfi

2016

Chilean J. Agric. Res.

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Agrophysiological and biochemical properties associated with adaptation of Medicago sativa populations to water deficit

Abstract: Materials and methods Plant material and growth conditionsFour Moroccan alfalfa populations, Tafilalet 1 (Taf 1), Tafilalet 2 (Taf 2), Demnate (Dem), and Tata, were used in this study. Seeds were supplied by National Institute for

Cited by 20 publications

References 42 publications

Application of biochemical markers for the assessment of drought tolerance in alfalfa (Medicago sativa L.) cultivars

Application of biochemical markers for the assessment of drought tolerance in alfalfa (Medicago sativa L.) cultivars

Nodulation and root growth increase in lower soil layers of water‐limited faba bean intercropped with wheat

Measuring the performance of perennial alfalfa with drought tolerance indices

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