2003
DOI: 10.1007/s00425-002-0958-3
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Salinity tolerance of japonica and indica rice (Oryza sativa L.) at the seedling stage

Abstract: In order to identify the degree of salinity tolerance of the indica and japonica rice groups, 10 varieties were tested under saline and non-saline conditions. Twelve-day-old seedlings were grown in normal culture solution, then initially salinized at an electrical conductivity (EC) of 6 dS/m for 4 days, and finally salinized at an EC of 12 dS/m for the next 14 days. The growth parameters, and Na and K absorption in the shoot were measured to characterize the tolerance level of the two rice groups. Reduction in… Show more

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Cited by 161 publications
(109 citation statements)
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“…Meanwhile genes involved in facilitating Na + exclusion from root xylem vessels to reduce shoot accumulation, like OsHKT1;5 and OsSOS1, were downregulated, leading to high concentrations of Na + accumulated in old leaves compared to young leaves. During salinity stress, salinity tolerant rice cultivars accumulate less Na + in leaves and shoots compared to salinity sensitive rice cultivars [40,[45][46][47]. Salt tolerant rice cultivar Pokkali was reported to be able to reduce the uptake of Na + into cytosol and maintain a low cytosolic Na + by transient uptake of Na + into cytoplasm and fast extrusion of Na + into vacuoles, while the salt sensitive rice cultivar BRRI Dhan29 failed to do so [48].…”
Section: Ion Homeostasis and Compartmentationmentioning
confidence: 99%
“…Meanwhile genes involved in facilitating Na + exclusion from root xylem vessels to reduce shoot accumulation, like OsHKT1;5 and OsSOS1, were downregulated, leading to high concentrations of Na + accumulated in old leaves compared to young leaves. During salinity stress, salinity tolerant rice cultivars accumulate less Na + in leaves and shoots compared to salinity sensitive rice cultivars [40,[45][46][47]. Salt tolerant rice cultivar Pokkali was reported to be able to reduce the uptake of Na + into cytosol and maintain a low cytosolic Na + by transient uptake of Na + into cytoplasm and fast extrusion of Na + into vacuoles, while the salt sensitive rice cultivar BRRI Dhan29 failed to do so [48].…”
Section: Ion Homeostasis and Compartmentationmentioning
confidence: 99%
“…Similar result has been well established in PT1 rice cultivar exposed to 342 mM NaCl (Cha-um et al 2009). The photosynthetic abilities of salt-tolerant rice varieties could be maintained and were better than those of the salt-sensitive variety, leading to maintained growth when subjected to salt stress (Tiwari et al 1997;Lee et al 2003;Ferdose et al 2009;Wang et al 2009;Cha-um et al 2010;Ghosh et al 2011). …”
Section: (G) (H)mentioning
confidence: 99%
“…Rice (Oryza sativa L.) is one of the most important cereals in the tropics and subtropics, and its yield is very sensitive to salinity (Khatun et al, 1995). Considerable efforts have been made to select salt resistant rice cultivars for sustained crop production (Lee et al, 2003), but progress has been slow due to inadequate understanding of the mechanism of resistance.…”
Section: Vertical Distribution Of Sodium In Roots Ofmentioning
confidence: 99%