Location: Dale Bumpers National Rice Research CenterTitle: Generalizations on the use of leaf element concentrations to accelerate improvement of rice grain nutritional quality
|TARPLEY, LEE - Texas Agrilife Research|
|CHITTOORI, RATNAPRABHA - Texas A&M University|
|SALT, DAVID - University Of Aberdeen|
|GUERINOT, MARY - Dartmouth College|
|COTHREN, TOM - Texas A&M University|
Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 10/2/2013
Publication Date: 11/2/2013
Citation: Tarpley, L., Chittoori, R., Pinson, S.R., Salt, D.E., Guerinot, M.L., Cothren, T. 2013. Generalizations on the use of leaf element concentrations to accelerate improvement of rice grain nutritional quality. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper number 78835, Tampa, FL, Nov. 2-6, 2013.
Technical Abstract: Traditional breeding approaches to develop rice genotypes with improved grain element composition require analyzing grain element concentrations of large numbers of genotypes. This study evaluated if the vegetative phenotype could be used to predict grain concentrations. Results indicate that vegetative-stage leaf concentrations do have potential to be used for indicating genotype grain concentration differences of some elements. As a group, genotypes selected for high grain-cadmium, -cobalt, -molybdenum, and -strontium harvested from flooded field plots, and selected for high grain-cadmium, -molybdenum, -rubidium, and -sulfur from unflooded field plots showed higher leaf-element concentrations as well. These results indicate that leaves harvested at the vegetative stage can be used to evaluate segregating progeny in a breeding program or in diverse germplasm collections to efficiently screen for elevated grain concentrations of some elements.