Unknown

Dataset Information

0

Bread Wheat With High Salinity and Sodicity Tolerance.


ABSTRACT: Soil salinity and sodicity are major constraints to global cereal production, but breeding for tolerance has been slow. Narrow gene pools, over-emphasis on the sodium (Na+) exclusion mechanism, little attention to osmotic stress/tissue tolerance mechanism(s) in which accumulation of inorganic ions such as Na+ is implicated, and lack of a suitable screening method have impaired progress. The aims of this study were to discover novel genes for Na+ accumulation using genome-wide association studies, compare growth responses to salinity and sodicity in low-Na+ bread Westonia with Nax1 and Nax2 genes and high-Na+ bread wheat Baart-46, and evaluate growth responses to salinity and sodicity in bread wheats with varying leaf Na+ concentrations. The novel high-Na+ bread wheat germplasm, MW#293, had higher grain yield under salinity and sodicity, in absolute and relative terms, than the other bread wheat entries tested. Genes associated with high Na+ accumulation in bread wheat were identified, which may be involved in tissue tolerance/osmotic adjustment. As most modern bread wheats are efficient at excluding Na+, further reduction in plant Na+ is unlikely to provide agronomic benefit. The salinity and sodicity tolerant germplasm MW#293 provides an opportunity for the development of future salinity/sodicity tolerant bread wheat.

SUBMITTER: Genc Y 

PROVIDER: S-EPMC6817574 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

altmetric image

Publications

Bread Wheat With High Salinity and Sodicity Tolerance.

Genc Yusuf Y   Taylor Julian J   Lyons Graham G   Li Yongle Y   Cheong Judy J   Appelbee Marie M   Oldach Klaus K   Sutton Tim T  

Frontiers in plant science 20191022


Soil salinity and sodicity are major constraints to global cereal production, but breeding for tolerance has been slow. Narrow gene pools, over-emphasis on the sodium (Na<sup>+</sup>) exclusion mechanism, little attention to osmotic stress/tissue tolerance mechanism(s) in which accumulation of inorganic ions such as Na<sup>+</sup> is implicated, and lack of a suitable screening method have impaired progress. The aims of this study were to discover novel genes for Na<sup>+</sup> accumulation usin  ...[more]

Similar Datasets

| S-EPMC8864244 | biostudies-literature
| S-EPMC10435944 | biostudies-literature
| S-EPMC6822720 | biostudies-literature
| S-EPMC6392380 | biostudies-literature
| S-EPMC9110595 | biostudies-literature
| S-EPMC9636341 | biostudies-literature
| S-EPMC6420002 | biostudies-literature
| S-EPMC6257323 | biostudies-literature
| S-EPMC9570438 | biostudies-literature
| S-EPMC4650848 | biostudies-literature