Determination of screening techniques to salinity tolerance in tomatoes and investigation of genotype responses

Daşgan, Hayriye; Aktaş, Hakan; Abak, K.; Çakmak, İsmail

doi:10.1016/s0168-9452(02)00091-2

Cited by 158 publications

(97 citation statements)

References 23 publications

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“…This sensitivity of the root system seems to be a feature of L. sativum. Generally it is the aerial organs, which manifest the depressive effect of salt (Dasgan et al 2002). These results are in agreement with the study of Ben Ahmed et al (2008) on Setaria verticillata.…”

Section: Discussionsupporting

confidence: 92%

Superoxide dismutase isozyme activity and antioxidant responses of hydroponically cultured Lepidium sativum L. to NaCl stress

Manaa

Mimouni

Terras

et al. 2013

Journal of Plant Interactions

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The present study was focused to assess the physiological behavior and antioxidant responses of the medicinal plant Lepidium sativum L. (commonly called Garden cress) subjected hydroponically to NaCl stress during its vegetative growth stage. The results showed that the addition of NaCl to growth medium significantly reduced plant growth. The magnitude of the response was also linked to the plant organ considered and NaCl concentration supplemented to the medium. Tissue hydration seemed unaffected by salinity. Reduction in dry weight (DW) production was associated with a high accumulation of Na + and Cl − and a significant reduction of K + content in shoots. The accumulation of osmoregulatory compounds (proline and total sugars) in shoots and roots was greatly increased by NaCl. Activity staining of antioxidants after a native polyacrylamide gel electrophores (PAGE) showed four superoxide dismutase (SOD) isozymes in the extract of leaf-soluble proteins (one Mn-SOD, two Fe-SODs, and one CuZn-SOD), and three isoforms in roots (Mn-SOD, Fe-SOD, and CuZn-SOD). Four peroxidase (POD) isozymes in the roots and only one isozyme in the leaves were detected. The work demonstrated that activities of antioxidant defense enzymes changed in parallel with the increased salinity. In summary, these findings proved that L. sativum can be classified as a moderately tolerant plant to salinity.

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Section: Discussionsupporting

confidence: 92%

Superoxide dismutase isozyme activity and antioxidant responses of hydroponically cultured Lepidium sativum L. to NaCl stress

Manaa

Mimouni

Terras

et al. 2013

Journal of Plant Interactions

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“…Whereas, in shoot, lowest Na + /K + ratio was observed for parent IIVR-Sel-2 and cross Azad T-2 x DARL-64. The genotypes which have low Na + /K + ratio may be used in further breeding for salinity tolerance in tomato (Cuartero and Munzo 1999;Dasgan et al 2002).…”

Section: Effect Of Salinity On Root/shoot Dry Weight Ratiomentioning

confidence: 99%

Effect of salinity on tomato (Lycopersicon esculentum Mill.) during seed germination stage

Singh

Sastry

Singh

2011

Physiol Mol Biol Plants

104

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A study was conducted using ten genetically diverse genotypes along with their 45F 1 (generated by diallel mating) under normal and salt stress conditions. Although, tomato (Lycopersicon esculentum Mill.) is moderately sensitive to salinity but more attention to salinity is yet to be required in the production of tomato. In present study, germination rate, speed of germination, dry weight ratio and Na + /K + ratio in root and shoot, were the parameters assayed on three salinity levels; control, 1.0 % NaCl and 3.0 % NaCl with Hoagland's solution. Increasing salt stress negatively affected growth and development of tomato. When salt concentration increased, germination of tomato seed was reduced and the time needed to complete germination lengthened, root/shoot dry weight ratio was higher and Na + content increased but K + content decreased. Among the varieties, Sel-7 followed by Arka Vikas and crosses involving them as a parent were found to be the more tolerant genotypes in the present study on the basis of studied parameters.

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“…Yang, Newton and Miller (1990) reported that K/Na ratios increased in salt tolerant plants. In addition, Dasgan et al (2002) reported that the K/Na ratio could be used reliably in the selection of plants tolerant to salt stress.…”

Section: Effect Of Salt Stress On Plant Nutrient Contents Of Watermelmentioning

confidence: 99%

Assessment of watermelon accessions for salt tolerance using stress tolerance indices

et al. 2017

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Salt stress is the most significant constraint for agricultural production in arid and semi-arid regions. Thus, genetically improved stresstolerant varieties are needed for the future. The identification of salt-tolerant genotypes is the starting point for such breeding studies. This study was conducted to determine and assess the tolerance of different watermelon genotypes under saline conditions. Twenty-two watermelon genotypes and accessions were grown in pots with 3 kg of soil in four saline stress conditions (0 mmol kg -1 as the control, 25, 50 and 100 mmol kg -1 NaCl). The detrimental effects of salt stress on the plants were evident with increasing doses of NaCl. Stress indices calculated over the plant dry weights under the 100 mmol kg -1 salinity level were used to assess the salt tolerance of the genotypes. Stress intensity was calculated as 0.76. Such a value indicated that the highest dose of salt exerted severe stress on the plants. The G04, G14 and G21 genotypes were considered to be salt tolerant, since these genotypes showed the highest values of K/Na and Ca/Na ratios in the plant tissue. The losses in dry mass at severe salt stress reached 75.48%. In principal component analyses, the genotypes had positive correlations with stress tolerance indices of MP (mean productivity), GMP (geometric mean productivity) and STI (stress tolerance index). The GMP and STI indices indicated that G04 (a member of Citrullus colocynthis), G14 and G21 could be prominent sources to develop salt tolerance.Index terms: Citrullus lanatus; local varieties; stress tolerance attributes; tolerance for salt stress. RESUMOO estresse salino é a restrição mais importante para a produção agrícola em regiões áridas e semi-áridas. Portanto, há necessidade de plantas geneticamente tolerantes ao estresse salino no futuro. Identificação de genótipos tolerantes ao sal é o ponto de partida de estudos de melhoramento. O presente estudo foi conduzido para determinar e avaliar a tolerância de diferentes genótipos de melancia sob condições salinas. Um total de 22 genótipos e acessos de melancia foram cultivados em vasos de 3 kg de solo com quatro condições de estresse salino diferentes (0 mmol kg -1 como controle, 25, 50 e 100 mmol kg -1 de NaCl). Dependendo do aumento da dose de NaCl, os efeitos prejudiciais do estresse salino nas plantas também aumentaram. Os índices de estresse calculados sobre os pesos secos das plantas com um nível de salinidade de 100 mmol kg -1 foram utilizados para avaliar a tolerância ao sal dos genótipos. A intensidade de tensão foi calculada como 0.76. Indicando que a maior dose de sal exerce um estresse salino grave nas plantas. Os genótipos G04, G14 e G21 foram considerados tolerantes, uma vez que apresentaram os maiores valores nas relações K/Na e Ca/Na. As perdas em pesos secos com estresse salino grave atingiram 75.48%. Na análise de componentes principais, os genótipos tiveram correlações positivas com os índices de tolerância ao estresse de PM (produtividade média), GMP (produtividade média geomé...

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Determination of screening techniques to salinity tolerance in tomatoes and investigation of genotype responses

Cited by 158 publications

References 23 publications

Superoxide dismutase isozyme activity and antioxidant responses of hydroponically cultured Lepidium sativum L. to NaCl stress

Superoxide dismutase isozyme activity and antioxidant responses of hydroponically cultured Lepidium sativum L. to NaCl stress

Effect of salinity on tomato (Lycopersicon esculentum Mill.) during seed germination stage

Assessment of watermelon accessions for salt tolerance using stress tolerance indices

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