Release of multiple virus and bruchid resistant Mesoamerican bean germplasm lines PR1303-129 and 1743-44

Authors: BEAVER, JAMES - University Of Puerto Rico; GONZALEZ, ABIEZER - University Of Puerto Rico; MATEO, BERNARDO - Dominican Institute For Agricultural And Forestry Research (IDIAF); GODOY DE LUTZ, GRACIELA - Dominican Institute For Agricultural And Forestry Research (IDIAF); MIRANDA, ANGELA - Institute Of Agricultural Science And Technology (ICTA); ROSAS, JUAN - Zamorano, Panamerican School Of Agriculture; Porch, Timothy

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/12/2023
Publication Date: 12/23/2023
Citation: Beaver, J.S., Gonzalez, A., Mateo, B., Godoy De Lutz, G., Miranda, A., Rosas, J.C., Porch, T.G. 2023. Release of multiple virus and bruchid resistant Mesoamerican bean germplasm lines PR1303-129 and 1943-44. Journal of Plant Registrations. 18:149-156. https://doi.org/10.1002/plr2.20344.
DOI: https://doi.org/10.1002/plr2.20344

Interpretive Summary: ‘Kikatiti’ pinto bean was developed by the dry bean breeding program at the University of Nebraska and submitted for release in 2021 by the Sokoine University of Agriculture in Morogoro as an upright, indeterminate pinto bean with high yield potential and multiple disease resistance across bean production environments in Tanzania. In 2024, Kikatiti was officially released in 2024 by the Tanzanian National Seed Committee. Kikatiti was developed using the pedigree breeding method in Nebraska. The exceptional performance of Kikatiti in Tanzania was first identified by evaluation of the Durango Diversity Panel, which consisted of 200 accessions, in on-station trials conducted in Arusha and Mbeya. Kikatiti was identified as accession DDP-094 (advanced breeding line NE2-09-3). Kikatiti yielded 1,584 kg ha-1 across five years of trials in Tanzania, and matured in 89 days. Kikatiti is resistant to bean rust conferred by the Ur-3 and Ur-11 genes, resistant to all strains of the viruses BCMV and BCMNV conferred by the I and bc-3 genes, moderately resistant to common bacterial blight conferred by the SAP6 QTL, avoids white mold disease due to its upright architecture, and is moderately susceptible to angular leaf spot disease. Kikatiti has large seed size and in on-farm trials, farmers ranked Kikatiti above local pinto cultivars for its high performance and good market potential. Kikatiti has the potential to expand pinto bean production across East Africa and is a valuable line for improvement of common bean in the U.S.

Technical Abstract: ‘Kikatiti’pinto bean (Phaseolus vulgaris L.) (Reg. no. CV-, PI-) was developed by the dry bean breeding program at the University of Nebraska, Agricultural Research Division, and submitted for release in 2021 by the Sokoine University of Agriculture in Morogoro as an upright indeterminate pinto bean with high yield potential and multiple disease resistance across bean production environments in Tanzania. In 2024, Kikatiti was officially released in 2024 by the National Seed Committee (NSC). Kikatiti is an F7:8 derived line developed using the pedigree breeding method in Nebraska. The exceptional performance of Kikatiti in Tanzania was first identified by evaluation of the Durango Diversity Panel (DDP), which consisted of 200 accessions, in on-station trials conducted in Arusha and Mbeya. Kikatiti was identified as accession DDP-094 (advanced breeding line NE2-09-3). Kikatiti yielded 1,584 kg ha-1 across five years of trials in Tanzania, and matured in 89 d. Kikatiti is resistant to bean rust conferred by the Ur-3 and Ur-11 genes, resistant to all strains of BCMV and BCMNV conferred by the I and bc-3 genes, moderately resistant to common bacterial blight conferred by the SAP6 QTL, avoids white mold disease due to its upright architecture, and is moderately susceptible to angular leaf spot (ALS) disease. Kikatiti has large seed size (35.9 g 100 seeds-1), and in on-farm trials, farmers ranked Kikatiti above local pinto cultivars for its high performance and good market potential. Kikatiti has the potential to expand pinto bean production across East Africa.