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Physiology and Molecular Biology of Stress ... - KHAM PHA MOI

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82<br />

Z . Dajic<br />

Salvadora spp. Leucaena Stipa tenacissima<br />

leucocephala<br />

Manilkara hex<strong>and</strong>ra Prosopis spp. Typha domingensis<br />

Santalum acuminatum<br />

Coccoloba uvifera<br />

Lycium fremontii<br />

Leaf protein<br />

Kochia scoparia<br />

Salsola kali<br />

Beta maritima<br />

Salicornia spp.<br />

Atriplex spp.<br />

Traditional crops<br />

asparagus<br />

barley<br />

wheat<br />

(adapted after BOSTID report, 1990)<br />

Table 5. Continued...<br />

Gossypium<br />

hirsutum<br />

Palms<br />

Bioactive derivates<br />

Calophyllum<br />

inophyllum<br />

Balanites spp.<br />

Catharanthus<br />

roseus<br />

Adathoda vasica<br />

mangrove species<br />

Ornamental use<br />

Eucaliptus spp.<br />

Tamarix spp.<br />

Conocarpus<br />

erectus<br />

Limonium spp.<br />

14. FURTHER PROSPECTS AND GOALS IN RESEARCH ON PLANT SALT<br />

TOLERANCE<br />

In summary, the improvements in plant salt tolerance can be identified by: a) screening<br />

for appropriate diversity in responses to salinity among cultivars or related wild species<br />

(Flowers <strong>and</strong> Yeo, 1995); b) treatment with mutagens in order to produce mutants which<br />

show hypersensitive or reduced responses to salinity as compared with the wild type<br />

(Zhang et al., 1995, Wu et al, 1996, Maggio et al., 2001), <strong>and</strong> c) engineering transgenic<br />

plants expressing one or more foreign genes which are expected to increase cellular<br />

resistance to salinity (Bohnert <strong>and</strong> Jensen, 1996, Neumann, 1997).<br />

Conventional methodologies <strong>of</strong> genetic manipulation in breeding for salt tolerance<br />

have been discussed (e.g. Yeo, 1998, Munns et al., 2002). These include quantitative<br />

trait locus (QTL) analysis, introgression <strong>of</strong> whole or parts <strong>of</strong> chromosomes,

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