Heat Shock Effects on Physiological Parameters Durum Wheat Seedlings and Relationships with Stress Tolerance Indices

Hamli, S.; Labhilili, Mostapha; Kadi, Kenza; Addad, Dalila; Bouzerzour, H.

doi:10.1007/978-3-319-70548-4_389

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…Physiological analyses revealed different responses of the genotypes to irrigation treatments, together with symptoms of water regimes; Da-Silva et al (2021) reinforce the importance of detailed studies of the relationship between productivity, physiology, and water use. While Winkel et al (2002) suggested using these parameters in assessing water stress in quinoa; contrast, Hamli et al (2015) showed differences in the rank of durum genotypes according to these physiological traits; and proposed that these physiological parameters could not be recommended to replace grain yield field testing. Also, Valdivia-Cea et al (2021) found that the environments play a main role in physiological parameters and estimated no significant differences among quinoa genotypes in season and other seasons.…”

Section: Physiological Traitsmentioning

confidence: 99%

Water use efficiency (WUE) and productivity of promising quinoa (Chenopodium quinoa Wild.) genotypes grown under three water regimes

El-Harty

Khan

Seleiman

et al. 2023

Not Bot Horti Agrobo

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Quinoa is one of the most nutritious grains and currently has attention due to its adaptation to a wide range of environments and abiotic stresses. This study was conducted under field conditions of an arid agro-ecosystem to evaluate the response physiological and yield of nineteen elite quinoa genotypes grown under three water regimes (95, 65, and 35% Field capacity) using a drip system in sandy soil. The experiment design was a split-plot in a randomized complete block design during the 2019/20 and 2020/21 growing seasons. The results showed significant differences among evaluated genotypes, water treatments, and their interaction. Fluorescence chlorophyll components were sensitive to water stress and strongly decreased at low soil moisture. Fluorescence (Fo) was the most correlated with seed yield and water use efficiency (WUE) under both full irrigation and drought stress. This may be used for improving yield and WUE in breeding programs. The optimum WUE achieved from moderate irrigation (65% FC), indicated the importance of detecting water requirements. The seed production ranges between 3.8 and 2.2 t ha-1 under full irrigation, and it decreases to reach 62.8% under water regimes. The most suitable genotypes for growing under full irrigation were ‘V9’, ‘Apelawa’, ‘30TES’, and ‘27GR’ which produced 3.8, 3.7, 3.5, and 3.5 t ha-1, respectively. The highest seed yield under stream drought (1.4 t ha-1) was produced by ‘Ames 10334’ and ‘QU629-99’. However, the genotype ‘Apelawa’ could outperform under different moisture conditions. It produced 1.2 t ha-1 under stream drought thus, recommended to cultivate it, especially in zones where precipitation fluctuates.

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Section: Physiological Traitsmentioning

confidence: 99%

Water use efficiency (WUE) and productivity of promising quinoa (Chenopodium quinoa Wild.) genotypes grown under three water regimes

El-Harty

Khan

Seleiman

et al. 2023

Not Bot Horti Agrobo

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“…Les pots ont été soumis sous conditions favorable (Température de 25 o C) qui correspond à la température de développement de l'espèce étudiée avec une irrigation à la capacité au champ. Les plantules atteignant le stade de 2 feuilles, sont dépotées, la partie racinaire lavée pour éliminer la terre adhérente puis elles sont placées dans un bain marie pour subir un stress thermique dont la température est fixée à 40°C et retirées après 60 minutes[6].2.dosage de la proline a été fait selon la méthode décrite par[7]. 100 mg de matière fraîche sont prélevés du tiers médian du limbe foliaire des différents génotypes étudiés.…”

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“…Les solutés les plus importants qui s'accumulent chez les plantes soumises aux stress sont les hydrates de carbone solubles et les acides aminés tels que la proline et la glycine-bétaïne[15]. Cette accumulation, chez le blé, a été associée à l'adaptation à des conditions de stress[6]. .2.1.…”

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Involvement of abiotic stress tolerance mechanisms in biotic stress tolerance in durum wheat

Hamli¹,

Kadi²,

Bekhouche³

et al. 2023

J. Fundam and Appl Sci.

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The objective of our study is to implicate the mechanisms of tolerance to abiotic stress by the synthesis of metabolites in tolerance to biotic stress. The extracted metabolites; proline, sugars and polyphenols from durum wheat seedlings subjected to heat shock (40 °C), used to test antifungal activity on two fungal strains, powdery mildew and penicillium, under controlled conditions. The boussellam variety is more tolerant of applied stress than the Ciccio and Vitron varieties. The concentration of the three osmolytes varies from one variety to another; it increases in genotypes stressed compared to controls. Antifungal activity results in the appearance of an inhibition zone around the disc impregnated with the studied extract. Sugars have proven to be a highly effective antifungal agent compared to proline and polyphenols with maximum values (28,33 ± 2 mm) in oidium and (29 ± 1 mm) in penicillium.

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Heat Shock Effects on Physiological Parameters Durum Wheat Seedlings and Relationships with Stress Tolerance Indices

Cited by 2 publications

References 4 publications

Water use efficiency (WUE) and productivity of promising quinoa (Chenopodium quinoa Wild.) genotypes grown under three water regimes

Water use efficiency (WUE) and productivity of promising quinoa (Chenopodium quinoa Wild.) genotypes grown under three water regimes

Involvement of abiotic stress tolerance mechanisms in biotic stress tolerance in durum wheat

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