Salt tolerance at germination and early growth of two forage grasses growing in marshy habitats

Joshi, A. J.; Mali, Boštjan; Hinglajia, Harsha

doi:10.1016/j.envexpbot.2004.09.005

Cited by 29 publications

(20 citation statements)

References 10 publications

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“…Several studies reported the effects of different salts common in the soil (Mohammad and Sen, 1990;Egan et al, 1997;Tobe et al, 2002;Duan et al, 2004). Most studies showed that the effect of salts on the germination is primarily osmotic and few researchers believed that it could be both ionic and osmotic (Mohammad and Sen, 1990;Duan et al, 2004;Joshi et al, 2005;Song et al, 2005). It appears that U. setulosa shows both osmotic and ionic effects, for example, KCl appears highly toxic, MgSO 4 less toxic.…”

Section: Resultsmentioning

confidence: 99%

“…(Khan and Rizvi, 1994;Khan and Ungar, 2000) and Suaeda fruticosa (Khan and Ungar, 1998) (Shainberg, 1975). Only few studies (Hardegree and Emmerich, 1990;Mohammad and Sen, 1990;Egan et al, 1997;Agboola, 1998;Pujol et al, 2000;Tobe et al, 2002;Joshi et al, 2005) have compared the effects of various salts on the germination of plants. Some studies indicated an osmotic effect of various chloride and sulfate salts on the germination but no specific ion effect (Mohammad and Sen, 1990;Egan et al, 1997;Agboola, 1998;Pujol et al, 2000) while others indicated both osmotic and ionic effects (Mohammad and Sen, 1990;Duan et al, 2004;Song et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Effect of calcium and light on the germination of Urochondra setulosa under different salts

Shaikh

Gul

et al. 2007

J. Zhejiang Univ. - Sci. B

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Urochondra setulosa (Trin.) C.E. Hubbard is a coastal halophytic grass thriving on the coastal dunes along the Pakistani seashore. This grass could be useful in coastal sand dune stabilization using seawater irrigation. The purpose of this investigation was to test the hypothesis that Ca 2+ (0.0, 2.5, 5.0, 10.0 and 50.0 mmol/L) alleviates the adverse effects of KCl, MgSO 4 , NaCl and Na 2 SO 4 at 0, 200, 400, 600, 800 and 1000 mmol/L on the germination of Urochondra setulosa. Seed germination was inhibited with increase in salt concentration with few seeds germinated at and above 400 mmol/L concentration. No seed germinated in any of the KCl treatments. Inclusion of CaCl 2 substantially alleviated the inhibitory effects of all salts. Germination was higher under photoperiod in comparison to those seeds germinated under complete darkness. Among the CaCl 2 concentrations used, 10 mmol/L was most effective in alleviating salinity effects and allowing few seeds to germinate at 1000 mmol/L KCl, MgSO 4 , NaCl and Na 2 SO 4 solution.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of calcium and light on the germination of Urochondra setulosa under different salts

Shaikh

Gul

et al. 2007

J. Zhejiang Univ. - Sci. B

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“…In addition, tolerant dicots frequently have salt-excreting glands and accumulate much higher concentrations of Na ? in their shoots, probably related to succulence which is more common in dicots than in monocots (Mateu-Andrés 1991;Joshi et al 2005;Tester and Bacic 2005).…”

Section: Introductionmentioning

confidence: 98%

Phenotypic indicators of NaCl tolerance levels in rice seedlings: variations in development and leaf anatomy

et al. 2010

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The aim of this research is the early identification of distinctive responses to NaCl in rice cultivars that would indicate further stress-related effects in mature plants. For this purpose, we analysed some developmental and anatomical features in control and NaCl-stressed seedlings of two Japonica rice cultivars (Bomba and Bahia). Responses ascribed to osmotic stress were differentiated from those related to the ionic component of salinity by using in parallel a non-penetrating osmoticum (sorbitol). The general patterns of reduction in growth and variations in anatomical features of second leaf sections were similar in both cultivars. The main difference between them was the intensity of the response as a function of the stress agent. In general, the effect of NaCl was significantly stronger than that of sorbitol in cv. Bomba, whereas in cv. Bahia the effects of both stress agents were comparable. In this regard, the size of epidermal and bulliform cells as well as dimensions related to the vascular system, including xylem vessels, increased significantly in NaClstressed cv. Bomba leaves. This enlargement of xylem vessels agrees with the observed decrease in the rate of eosin transport and appears to be a distinctive anatomical indicator of NaCl sensitivity. The further impact of salinity on grain yield was proved to be stronger in cv. Bomba plants than in those of cv. Bahia.

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“…A toxicidade iônica pode ainda ocasionar o atraso da emergência das plântulas e da mobilização das reservas ou até diminuir a viabilidade das sementes (Misra e Dwivedi, 2004;Joshi et al, 2005;Esteves e Suzuki, 2008;Kumar et al, 2008;Munns e Tester, 2008;Voigt et al, 2009).…”

Section: Introductionunclassified

Influência da sanidade e deficit hídrico na germinação de sementes de Carthamus tinctorius L.

Dantas¹,

Silva²,

Pereira³

et al. 2011

Rev. bras. sementes

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A salinidade e o déficit hídrico são os fatores abióticos que têm afetado acentuadamente a produção de espécies vegetais de importância socioeconômica nas regiões áridas e semi-áridas. Portanto, o objetivo do presente trabalho foi de avaliar os efeitos do cloreto de sódio (NaCl) e do polietilenoglicol (PEG 6000), agentes estressores comumente utilizados para simular os estresses salino e hídrico, respectivamente, na germinação de sementes de cártamo (Carthamus tinctorius L.), uma oleaginosa da família Asteraceae. A germinação foi conduzida em sistema de rolo, com delineamento experimental de sete tratamentos osmóticos (controle; "0,450; "0,852; "1,271 MPa), sendo três com concentrações isosmóticas de NaCl (100; 200 e 300mM) e PEG (188,35; 267,75 e 357,24 g/L), e cada tratamento com seis repetições. Durante a germinação, foram avaliados parâmetros como a porcentagem de germinação, o índice de velocidade de germinação (IVG), e três dias após o semeio, foram registrados o índice de crescimento relativo da radícula (ICRR) e a massa fresca dos eixos das plântulas. A porcentagem de germinação e o IVG não sofreram alterações significativas no tratamento osmótico de "0,450 MPa induzido por NaCl quando comparado com o controle, enquanto no mesmo tratamento, induzido pelo PEG, estes dois parâmetros apresentaram uma intensa diminuição e um leve aumento, respectivamente. O ICRR e a massa das plântulas apresentaram diminuições proporcionais à redução do potencial osmótico ao utilizar ambos os compostos. Com base nos resultados alcançados, pôde-se concluir que a germinação de sementes de cártamo é influenciada pelo tipo de estresse aplicado e sua respectiva dose. Adicionalmente, o estresse osmótico induzido por PEG 6000 é mais agressivo que o salino, e potenciais osmóticos mais baixos ("0,851 e "1,271 MPa) são limitantes para a germinação desta espécie.

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Salt tolerance at germination and early growth of two forage grasses growing in marshy habitats

Cited by 29 publications

References 10 publications

Effect of calcium and light on the germination of Urochondra setulosa under different salts

Effect of calcium and light on the germination of Urochondra setulosa under different salts

Phenotypic indicators of NaCl tolerance levels in rice seedlings: variations in development and leaf anatomy

Influência da sanidade e deficit hídrico na germinação de sementes de Carthamus tinctorius L.

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