Halophyte and glycophyte salt tolerance at germination and the establishment of halophyte shrubs in saline environments

Malcolm, C. V.; Lindley, Virginia A.; O’Leary, James W.; Runciman, Helen V.; Barrett-Lennard, E.G.

doi:10.1023/a:1024578002235

Cited by 76 publications

(54 citation statements)

References 18 publications

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“…Accordingly, quinoa has been selected by the food and agriculture organization (FAO) as one of the crops destined to offer food security in the 21 st century (Jacobsen, 2003). Several studies showed that even halophytes are particularly salt sensitive during the stages of seed germination and seedling establishment (Tobe et al, 2000;Malcolm et al, 2003). However, they have an advantage over plant species that lack strategies to deal with salt in the soil (Tobe et al, 2000;Rosa et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Effect of Irrigation Water Salinity on the Growth of Quinoa Plant Seedlings

Algosaibi¹,

El-Garawany²,

Badran³

et al. 2015

JAS

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The experiment aimed to study the effect of the irrigation water quality on the growth of seedlings and its yield of quinoa plant through some traits i.e., plant height, number of leaves per plant, 1000 grains weight, dry weight per plant , stem diameter, inflorescence length and grain yield per plant. Four treatments were used as follow: T1 (low salinity water, EC 1.25 dS m -1 ), T2 (mix water between low salinity water and agricultural drainage water at ratio 1:1, EC 4 dS m -1 ), T3 (agricultural drainage water, EC 8 dS m -1 ) and T4 (high salinity water, EC 16 dS m -1 ). The treatments application was at the beginning of the plant buds so that the amount of irrigation water up to 75% from field capacity. The significant effects of treatments were found on all tested traits. Also, the results clarified that the rate of chlorophyll ranged between 44.18 (treatment T4) and 53.75 SPAD (treatment T3), water potential of the fourth leaf has ranged from -0.83 to -1.745 MPa for T1 and T3 treatments, respectively, number of leaves per plant was ranged between 26.5 and 28.5 when the plants were irrigated with T4 and T1 irrigation water treatments, respectively. The inflorescence lengths were varied between 8 cm at T4 treatment and 12 cm at T2 treatment. The plant height was ranged between 53.5 cm (T4) and 60.75 cm (T3). The low values of seed yield were recorded at T4 (17.05 g/plant) while the higher values were recorded with T2 treatment (34.08 g/plant). 1000-grain weight values were ranged between 2.97 g at T2 treatment, and 3.49 g at treatment T1.

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Section: Introductionmentioning

confidence: 99%

Effect of Irrigation Water Salinity on the Growth of Quinoa Plant Seedlings

Algosaibi¹,

El-Garawany²,

Badran³

et al. 2015

JAS

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“…There is also evidence to support the view that salt tolerance is a complex physiological trait affecting entirely the plant's life (Flowers 2004). Germination determines when and how seedling growth begins, and the young seedling is the most vulnerable stage to environmental conditions (Malcolm et al 2003). The ability of species/ cultivars to survive during the germination and early seedling stages is crucial for the growth and yield of the crops as well as for the distribution of species (Ungar 1996;Tobe et al 2000;Malcolm et al 2003).…”

mentioning

confidence: 99%

“…Germination determines when and how seedling growth begins, and the young seedling is the most vulnerable stage to environmental conditions (Malcolm et al 2003). The ability of species/ cultivars to survive during the germination and early seedling stages is crucial for the growth and yield of the crops as well as for the distribution of species (Ungar 1996;Tobe et al 2000;Malcolm et al 2003). In saline environments, seeds and young seedlings are often exposed to salt concentrations higher than older plants because germination usually occurs in the soil surface (Foolad 1999).…”

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confidence: 99%

The role of cotyledon metabolism in the establishment of quinoa (Chenopodium quinoa) seedlings growing under salinity

Ruffino¹,

Rosa²,

Hilal³

et al. 2009

Plant Soil

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A growth chamber experiment was conducted to assess the effect of salinity on emergence, growth, water status, photosynthetic pigments, osmolyte accumulation, and ionic content of quinoa seedlings (Chenopodium quinoa). The aim was to test the hypothesis that quinoa seedlings are well adapted to grow under salinity due to their ability to adjust the metabolic functionality of their cotyledons. Seedlings were grown for 21 days at 250 mM NaCl from the start of the germination. Germination percentage and cotyledon area were not affected by salt whereas seedling height decreased 15%. FW increased in both control and salt-treated cotyledons, but the increase was higher under salinity. DW only increased in salttreated cotyledons. The DW/FW ratio did not show significant differences between treatments. Relative water content, chlorophyll, carotenoids, lipids, and proteins were significantly lower under salinity. Total soluble sugars, sucrose and glucose concentrations were higher in salt-treated than in control cotyledons. Ion concentration showed a different distribution pattern. Na + and Cl − concentrations were higher under salinity, while an inverse result was observed for K + concentration. Proline and glycinebetaine concentrations increased under salinity, but the increase was higher in the former than the latter. The osmoprotective role of proline, glycinebetaine, and soluble sugars is discussed.

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“…Many glycophytes such as wheat were able to germinate at NaCl concentrations above 300 mmol/L (Malcolm et al, 2003), while some moderately salt-tolerant glycophytic plants (cotton and alfalfa) germinated up to 200 mmol/L NaCl (Kent and Läuchli, 1985;Rumbaugh and Pendery, 1990). Salt stress could reduce germination either by limiting water absorption by the seeds (Dodd and Donovan, 1999), by effecting the mobilization of stored reserves (Lin and Kao, 1995) or by directly affecting the structural organization or synthesis of proteins in germinating embryos (Ramagopal, 1990).…”

Section: Discussionmentioning

confidence: 99%

Comparison of germination responses of cultivated wheat ( Triticum ) and its wild relative ( Aegilops ) species under salinity, temperature and light

Yıldız

Kasap

2007

Acta Agronomica Hungarica

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The seed germination of bread (Triticum aestivum cv. Bezostaya 1 and Ceyhan 99) and durum (Triticum durum cv. Diyarbakır 81 and Fırat 93) wheat species and their wild relative species (Aegilops biuncialis and Ae. triuncialis) was compared at two light levels, nine NaCl concentrations and three alternating temperature regimes. No seeds germinated at 675 mmol/L NaCl. The highest seed germination (100%) of cultivated wheat cultivars was noted in the control at 15/25°C and 20/30°C, and that of wild wheat species in both the control and the 150 mmol/L NaCl treatment under all temperature regimes. The seed germination of bread and durum wheat cultivars was completely inhibited at or above 450 and 375 mmol/L NaCl, respectively. No Ae. biuncialis seeds germinated at 600 mmol/L NaCl, while seeds of Ae. triuncialis germinated at this concentration (38.9%) only at 20/30°C in darkness. The inhibitory effect of light on germination in all genotypes was determined in some salinity levels at 15/25°C. The optimal germination treatment for all genotypes was 15/25°C temperature regime and darkness. The inhibitory effect of high salinity on germination was greater at 25/35°C than at 15/25°C or 20/30°C. In salinity and temperature interactions, the seeds of wild wheat species were found to be more tolerant than those of wheat cultivars.

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Halophyte and glycophyte salt tolerance at germination and the establishment of halophyte shrubs in saline environments

Cited by 76 publications

References 18 publications

Effect of Irrigation Water Salinity on the Growth of Quinoa Plant Seedlings

Effect of Irrigation Water Salinity on the Growth of Quinoa Plant Seedlings

The role of cotyledon metabolism in the establishment of quinoa (Chenopodium quinoa) seedlings growing under salinity

Comparison of germination responses of cultivated wheat ( Triticum ) and its wild relative ( Aegilops ) species under salinity, temperature and light

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