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ARS Home » Southeast Area » Stuttgart, Arkansas » Dale Bumpers National Rice Research Center » Research » Publications at this Location » Publication #417221
Research Project: Broadening and Strengthening the Genetic Base of Rice for Adaptation to a Changing Climate, Crop Production Systems, and Markets

Location: Dale Bumpers National Rice Research Center

Title: USDA ARS DB NRRC research on rice sustainability and tolerance to biotic & abiotic stresses

Author
item Edwards, Jeremy
item Jia, Yulin
item Pinson, Shannon
item Rohila, Jai
item Huggins, Trevis
item Jia, Melissa
item Jackson, Aaron
item Eizenga, Georgia

Submitted to: Meeting Abstract
Publication Type: Other
Publication Acceptance Date: 8/1/2024
Publication Date: 8/1/2024
Citation: Edwards, J., Jia, Y., Pinson, S.R., Rohila, J.S., Huggins, T.D., Jia, M.H., Jackson, A.K., Eizenga, G.C. 2024. USDA ARS DB NRRC research on rice sustainability and tolerance to biotic & abiotic stresses. Abstract. 2024 University of Arkansas Field Day, August 1, 2024. Stuttgart, Arkansas.

Interpretive Summary:

Technical Abstract: Research at the Dale Bumpers National Rice Research Center is focused on evaluating diverse germplasm to discover new resources and genes for increased resistance and improved yield potential. This year there are six different experiments on display. 1) The low inventory rejuvenation (LIR) bay contains diverse accessions from the National Small Grains Collection (NSGC). The accessions in NSGC are a source of novel genes that can be mined and used for rice improvement. The accessions are grown to replenish seed inventories and characterized phenotypically and genotypically with 24 genetic markers. 2) The medium grain rice improvement for yield and disease resistance is a special focus for this year. The blast resistance genes Pi-ta and Ptr from Katy were backcrossed into Calrose quality medium grain rice variety M-202. 3) Four mapping populations are being developed from crosses of four stress-tolerant ADP1 accessions with a public US variety. 4) Two advanced generation mapping populations were developed from a cross between a drought tolerant accession and US variety, and from a heat tolerant accession and US variety and 5) the California variety, M-202, was identified as salt tolerant at the seedling stage, ARS is identifying these genes and developing salt tolerant pre-breeding lines, and 6) ARS conducts a collaborative project with its government counterpart in Japan, known as NARO. The collaborative study is investigating how rice plants and soil microbes are affected by dry downs during the vegetative phase of rice growth (alternate wetting and drying) with the goal of reducing greenhouse gas emissions, conserving water, and preserving grain milling and processing quality as well as yield simultaneously across different environments. With the help of Arkansas Rice Research and Promotion Board funding, ARS is collaborating with University of Arkansas rice breeders on multiple projects including evaluating a panel of 100 advanced breeding lines for deficit irrigation stress tolerance, genomic prediction and field blast survey to accelerate breeding.