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ARS Home » Plains Area » El Reno, Oklahoma » Oklahoma and Central Plains Agricultural Research Center » Livestock, Forage and Pasture Management Research Unit » Research » Publications at this Location » Publication #432114
Research Project: Integrated Research to Enhance Forage and Food Production from Southern Great Plains Agroecosystems

Location: Livestock, Forage and Pasture Management Research Unit

Title: Improving the grain yield, biomass production, and forage nutritive values of guar [Cyamopsis tetragonoloba (L.) Taub.] using additive main effect and multiplicative interaction and AMMI stability values

Author
item Witt, Travis
item Northup, Brian
item TIWARI, MUSKAN - Texas Tech University
item BUROW, MARK - Texas Tech University

Submitted to: Agronomy Journal
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 4/3/2026
Publication Date: 5/1/2026
Citation: Witt, T.W., Northup, B.K., Tiwari, M., Burow, M. 2026. Improving the grain yield, biomass production, and forage nutritive values of guar [Cyamopsis tetragonoloba (L.) Taub.] using additive main effect and multiplicative interaction and AMMI stability values. Agronomy Journal. 118(3). Article e70403. https://doi.org/10.1002/agj2.70403.
DOI: https://doi.org/10.1002/agj2.70403

Interpretive Summary: Breeding high yielding forages with good nutritive values is difficult in semi-arid and arid locations of the world. The goal of this study was to identify guar breeding lines with potential use as forages for the US southern Great Plains using statistical analysis to determine each lines' adaptability and suitability. Twenty five breeding lines and five commercial cultivars were evaluated at two locations during two years. Although no breeding line was perfect for the seven forage nutritive traits, grain yield, or biomass production. Two breeding lines, on average, performed better than the five commercial cultivars. The results of this study showed that the guar breeding lines have adequate adaptability, variability, and stability to create future high yielding guar varieties with good forage nutritive values.

Technical Abstract: Breeding high yielding forages with good nutritive values is difficult in semi-arid and arid locations of the world. The goal of this study was to identify guar breeding lines with potential use as forages for the US southern Great Plains using AMMI analysis and AMMI stability values (ASV). Twenty five breeding lines and five commercial cultivars were evaluated at two locations during two years. Although no genotype had an ASV of 1 (best) for grain yield, biomass production, and the seven forage nutritive value traits; two genotypes had lower ASV than the commercial controls when averaged across all traits. Within many of the individual traits, several genotypes were better than the commercial cultivars. For example, breeding line 15GFT-114 had the best ASV for biomass and seed yield production, relative forage quality (RFQ) and total digestible nutrients (TDN). The results of this study showed that the guar breeding lines have adequate adaptability, variability, and stability to create future high yielding guar varieties with good forage nutritive values.