Location: Plant Stress and Germplasm Development Research
Title: Assessment of growth and yield potential of a dominant multi-tillering sorghum mutantAuthor
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Submitted to: Corn and Sorghum Improvement Conference Proceedings
Publication Type: Abstract Only Publication Acceptance Date: 12/13/2023 Publication Date: 4/2/2024 Citation: Pugh, N.A., Xin, Z., Chen, J., Burow, G.B. 2024. Assessment of growth and yield potential of a dominant multi-tillering sorghum mutant. Corn and Sorghum Improvement Conference Proceedings. Interpretive Summary: Technical Abstract: Sorghum is a critical crop worldwide, especially prized for its drought tolerance and potential for meeting the needs of a changing climate. Thus, it is critical that sorghum breeders and producers have access to sorghum germplasm that have superior forage and grain yields. Recently, a dominant multi-tillering mutant (mtl-D1) has been identified that produces superior grain and biomass yields compared to wild-type BTx623. In 2021, the mtl-D1 mutant produced mean biomass yields of 32.8 t/ha, and the WT BTx623 produced 22.4 t/ha in a fully irrigated small plot trial. For grain yield, the mtl-D1 mutant yielded 11.9 t/ha, and the WT BTx623 yielded 8.9 t/ha, also in a fully irrigated small plot trial. The mtl-D1 mutant had statistically significant higher yields in both the forage and grain yield trials. Future work for this important germplasm includes the introgression of mtl-D1 into diverse breeding lines, and the development of grain and forage hybrids expressing the novel mtl-D1 multi-tillering trait. |
