Effect of increasing potassium levels for alleviating sodium chloride stress on the growth and yield of tomato

Satti, S.M.E.; Lopez, M. V.

doi:10.1080/00103629409369227

Cited by 52 publications

(22 citation statements)

References 23 publications

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“…Likewise, K levels increased and Na decreased in Troyer citrange roots with the addition of Ca 2 to the saline substrate (Ban Äuls et al, 1991). Depending on genotype, supplemental Ca 2 , added to saline solution cultures containing basal levels of K (3 mM) was as effective in improving the K levels in salt-stressed tomato roots (Lopez and Satti, 1996) and shoots (Satti and Lopez, 1994) Results from solution culture experiments show the deleterious effects associated with reduced uptake and translocation of K by plants grown in high-Na can frequently be alleviated by the addition of K to the substrate. Growth of Na -stressed tomato (Satti and Lopez, 1994;Song and Fujiyama, 1996), maize (Botella et al, 1997), bean and sunflower (Helianthus annuus L.) (Benlloch et al, 1994) improved with increases in external K /Na ratio.…”

Section: Potassiummentioning

confidence: 97%

Salinity–mineral nutrient relations in horticultural crops

Grattan

Grieve

1998

Scientia Horticulturae

1,179

738

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Section: Potassiummentioning

confidence: 97%

Salinity–mineral nutrient relations in horticultural crops

Grattan

Grieve

1998

Scientia Horticulturae

1,179

738

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“…Reports suggest that PGPR having a potential of solubilizing phosphorus; calcium and potassium protect the plants against sodium toxicity (Grichko and Glick 2001;Egamberdiyeva and Hoflich 2003). Satti and Lopez (1994) also showed that an increase in K ' concentration in tomato plants exposed to salt stress could ameliorate the deleterious effect of salt stress.…”

Section: Effect Of Salinity On Growth Of Tomato Plantsmentioning

confidence: 99%

Salinity-resistant plant growth promoting rhizobacteria ameliorates sodium chloride stress on tomato plants

Tank

Saraf

2010

Journal of Plant Interactions

297

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Salinity is one of the major anthropogenic as well as environmental stresses that reduce plant growth. Results show that even after being adapted up to 6% sodium chloride (NaCl) concentration, all selected isolates were able to solubilize phosphate, and produce phytohormones, siderophores and 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase enzyme. NT1 was found to exhibit the highest phosphate solubilization zones (25 mm), siderophore production (1000 mg ml (1 ) as well as ACC deaminase production (50 mMmg (1 h (1 ) potential under laboratory conditions. On the other hand, pot studies conducted on tomato plants under 2% NaCl stress proved that C4 and T15 were the best growth promoters. C4 showed 50% enhancement in root and shoot length as compared to NaCl added untreated plants as well as in absence of NaCl. C4 also enhanced salinity tolerance in plants with the lowest uptake of NaCl thereby reducing the salt stress on plants. C5 enhanced biomass production in tomato plants with increased uptake of the salts by plants, thereby reducing the salt concentration in the soil. The study thus shows that the selected isolates can be used for the plant growth promotion of plants under salinity stress.

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“…O K + é o principal nutriente relacionado a funções osmó-ticas das plantas; conforme Satti & Lopez (1994), o melhor desempenho de alguns genótipos mantidos sob condições de estresse salino tem sido associado a uma nutrição potássica adequada, porém, o aumento da proporção de K + , em meio contendo NaCl, nem sempre resulta em efeitos benéficos para as plantas, podendo a salinidade provocada por altas concentrações de K + ser, inclusive, mais prejudicial que a provocada por altas concentrações de sódio, o que pode ter ocorrido nesse estudo.…”

Section: Taxa De Crescimento Absoluto E Relativounclassified

Crescimento de meloeiro sob estresse salino e doses de potássio

Gurgel

Uyeda

Gheyi³

et al. 2010

Rev. bras. eng. agríc. ambient.

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RESUMOO Estado do Rio Grande do Norte, em destaque a região da Chapada do Apodi, se destaca na produção e exportação de melão no País, em regime de irrigação, devido à distribuição pluvial baixa e irregular. A Chapada do Apodi possui dois aqüíferos subterrâneos; a do lençol menos profundo de alta salinidade, porém com menor custo de bombeamento, ocorrendo o contrário com o de maior profundidade. Objetivou-se, ante o exposto, avaliar o efeito de duas águas de salinidades diferentes (0,52 e 2,41 dS m -1 ), combinadas com cinco doses de K 2 O (218, 273, 328, 383 e 438 kg ha -1 ) sobre o crescimento do meloeiro (Cucumis melo L.), cultivar Goldex, utilizando-se do delineamento de blocos ao acaso, com parcelas subdivididas; amostras de planta foram coletadas aos 21, 28, 35, 49 e 63 dias após a semeadura, determinandose a fitomassa seca das plantas, estas separadas em ramos (caule + folhas), flores e frutos; avaliou-se, também, a taxa de crescimento absoluto e relativo e a produção de frutos. Em geral, o crescimento do melão foi favorecido com o uso de água mais salina; a taxa de crescimento absoluto foi máxima entre 35 e 49 dias após a semeadura. Obteve-se maior produção de fitomassa total com 438 kg ha -1 de K 2 O e uso de água mais salina, ao final do ciclo. Palavras-chave:Cucumis melo L, salinidade, fertigação potássica, fitomassa Growth of melon cultivated under saline stress and potassium doses ABSTRACT The region of 'Chapada do Apodi', in the State of Rio Grande do Norte, stands out in Brazilian production and exportation of melon. This region possesses two aquiffers, one of lower exploration cost, though of high salinity, another of low salinity, with higher cost and limited use. This work was carried out with the objective to evaluate the effect of waters of different salinities combined with five doses of K in the dry matter accumulation and productivity of the melon (Cucumis melo L.) cultivar Goldex. The experimental design adopted was split plot in completely randomized blocks. The melon crop was irrigated with low (0.52 dS m -1 ) and high (2.41 dS m -1 ) salinity water combined with five doses of K 2 O (218, 273, 328, 383 and 438 kg ha -1 ). Plants were collected at 21, 28, 35, 49 and 63 days after sowing, and were separated in branches (shoot + leaves), flowers and fruits, and the total dry matter of the aerial parts obtained by summation. The absolute and relative growth rates and the production of fruits were also evaluated. The absolute growth rate of the plant was maximum between 35 and 49 days. The highest total biomass was obtained with 438 kg ha -1 K 2 O and use of high salinity water at the end of crop cycle.

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Effect of increasing potassium levels for alleviating sodium chloride stress on the growth and yield of tomato

Cited by 52 publications

References 23 publications

Salinity–mineral nutrient relations in horticultural crops

Salinity–mineral nutrient relations in horticultural crops

Salinity-resistant plant growth promoting rhizobacteria ameliorates sodium chloride stress on tomato plants

Crescimento de meloeiro sob estresse salino e doses de potássio

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