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In vitro-ex vitro salt (NaCl) tolerance of cassava (Manihot esculenta Crantz) plants

AuthorsCarretero Montero, C. L.; Cantos, Manuel ; García Fernández, José Luis ; Troncoso de Arce, Antonio
Issue Date2007
CitationIn Vitro Cellular and Developmental Biology - Plant 43(4): 364- 369 (2007)
AbstractThree cassava clones (SOM-1, >05>, and >50>) were cultured in vitro on MS medium plus sucrose (30 g L-1) and myo-inositol (100 mg L-1) without plant growth regulators and with additions of 0 (control), 0.5, 1, 1.5, 2, 2.5, and 3 g L-1 NaCl to test their salt tolerance. The same cassava clones were cultivated in greenhouse conditions on a sandy soil substratum and irrigated with 20% strength Hoagland solution, and additions of 0, 4, and 8 g L-1 of NaCl. Salinity negatively affected the survival, development, leaf water content, and mineral composition (mainly by accumulation of Cl and Na) of both in vitro and ex vitro plants, but with different intensity in each clone. In both conditions of culture (in vitro and ex vitro) clone SOM-1, from a desert arid saline zone of Somalia, was the most tolerant and clone >05>, from a rainy region of Ivory Coast, the most sensitive. Clone >50> tolerance to in vitro salt treatments, although lower, was not significantly different from that of SOM-1 but the ex vitro response was similar to >05>. In general, there was a correlation between in vitro and ex vitro behavior of the cassava plant regarding salt tolerance, which would allow the in vitro culture method to be used for selection of salt-tolerant plants of this crop. © 2007 The Society for In Vitro Biology.
Identifiersdoi: 10.1007/s11627-006-9022-5
issn: 1054-5476
e-issn: 1475-2689
Appears in Collections:(IRNAS) Artículos
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