Modifying K sup + /Na sup + discrimination in salt-stressed wheat containing individual chromosomes of a salt-tolerant lophopyrum
As outlined in the proposal for this project, the practical or applied impetus for this research is this: salinity of soils and water is inimical to the production of crops and other plants biomass, and to that extent causes a dimunition of the world's capture of solar energy. Of the two strategies of coping with this problem -- rendering soils and water less saline, and developing plants better able to cope with saline substrates -- the present project deals with the latter. The current prolonged drought in California and elsewhere in the West prompts an energetic pursuit of this option, for the availability of less water is tantamount to a general exacerbation of the salinity threat. Bread wheat, Triticum aestivum, is relatively salt-sensitive, whereas tall wheatgrass, Lophopyrum elongatum, is highly salt-tolerant, as shown in our laboratory in investigations going back to the 1960's. In the present investigation both the degree of salt tolerance and that of K{sup +}/Na{sup +} discrimination have been examined in wheat, Triticum aestivum, Chinese Spring,' the wheat x L. elongatum amphiploid, and a set of 20 disomic substitution lines. The latter would reveal which of the L. elongatum chromosomes substituted for their homoeologues in wheat contribute salt tolerance to wheat, and what congruence, if any, exists between that degree of salt tolerance and changes in K{sup +}/Na{sup +} discrimination in the target wheat.
- Research Organization:
- California Univ., Davis, CA (USA)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- FG03-89ER14037
- OSTI ID:
- 6108359
- Report Number(s):
- DOE/ER/14037-T1; ON: DE91008972
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
60 APPLIED LIFE SCIENCES
POTASSIUM IONS
ROOT ABSORPTION
SALINITY
BIOLOGICAL EFFECTS
SODIUM IONS
WHEAT
TOLERANCE
CALCIUM IONS
CHLORINE IONS
CHROMOSOMES
CULTIVATION TECHNIQUES
ECOLOGICAL CONCENTRATION
FIELD TESTS
GENETIC MAPPING
HYDROPONIC CULTURE
MAGNESIUM IONS
PLANT BREEDING
PROGRESS REPORT
SOILS
ABSORPTION
CEREALS
CHARGED PARTICLES
DOCUMENT TYPES
GRAMINEAE
IONS
LILIOPSIDA
MAGNOLIOPHYTA
MAPPING
PLANTS
TESTING
UPTAKE
550400* - Genetics
553000 - Agriculture & Food Technology
550200 - Biochemistry