New insights in plant breeding efforts for improved salt tolerance

The lack of improvement for salt tolerance has been attributed to insufficient genetic variation, a need for rapid and reliable genetic markers for screening, and the complexities of salinity × environment interactions. Salt tolerance is a quantitative characteristic that has been defined in many wa...

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Published inHortTechnology (Alexandria, Va.) Vol. 6; no. 2; pp. 96 - 99
Main Author Shannon, M.C. (U.S. Salinity Laboratory, USDA, ARS-PWA, Riverside, CA.)
Format Journal Article
LanguageEnglish
Published Alexandria American Society for Horticultural Science 01.04.1996
Subjects
AGUA SALINA
CRITERE DE SELECTION
CRITERIOS DE SELECCION
CROPS
CULTIVOS
DISEASE RESISTANCE
EAU SALINE
ENSAYO
genetic resistance
GENETICA
GENETICS
GENETIQUE
GERMOPLASMA
GERMPLASM
HORTICULTURA
horticultural crops
HORTICULTURE
IDEOTYPES
MODELE
MODELOS
Plant breeding
PLANTE DE CULTURE
RESISTANCE AUX MALADIES
RESISTENCIA A LA ENFERMEDAD
SALINE WATER
SALINIDAD DEL SUELO
SALINITE DU SOL
salinity
Salinity tolerance
SALT TOLERANCE
SCREENING
SELECTION CRITERIA
SOIL SALINITY
TESTAGE
TESTING
TOLERANCE AU SEL
TOLERANCIA A LA SAL
water quality
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Summary:The lack of improvement for salt tolerance has been attributed to insufficient genetic variation, a need for rapid and reliable genetic markers for screening, and the complexities of salinity × environment interactions. Salt tolerance is a quantitative characteristic that has been defined in many ways subject to changes with plant development and differentiation; thus, assessing salt tolerance among genotypes that differ in growth or development rate is difficult. Salt tolerance also varies based on concentrations of major and minor nutrients in the root zone. Plant growth models may provide a method to integrate the complexities of plant responses to salinity stress with the relevant environmental variables that interact with the measurement of tolerance. Mechanistic models have been developed over the last few years that are responsive to nitrogen or drought stress but not to salinity stress. Models responsive to salinity stress would provide insights for breeders and aid in developing more practical research on the physiological mechanisms of plant salt tolerance.
Bibliography:F60
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9730767
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ISSN:1063-0198
1943-7714
DOI:10.21273/HORTTECH.6.2.96A