Registration of PD 20170034, PD 20170044, PD 20170057, and PD 20170060 germplasm lines of cotton

Abstract PD 20170034 (Reg. no. GP‐1163, PI 708129), PD 20170044 (Reg. no. GP‐1164, PI 708130), PD 20170057 (Reg. no. GP‐1165, PI 708131), and PD 20170060 (Reg. no. GP‐1166, PI 708132) are noncommercial breeding lines of upland cotton ( Gossypium hirsutum L.) jointly released by the USDA‐ARS and Cotton Incorporated in 2021. PD 20170034, PD 20170044, PD 20170057, and PD 20170060 are breeding lines selected from a cross between an elite cultivar or germplasm line and an exotic landrace accession from Africa, Central America, or South America. Each breeding line possesses 50% exotic landrace parentage and excellent fiber quality significantly better than several commercial cultivars such as ‘Deltapine 393’, ‘Phytogen 72’, and ‘UA 48’. PD 20170034, PD 20170044, PD 20170057, and PD 20170060 display good adaptation in three distinct regions of the US upland cotton production area and provide cultivar development programs valuable sources of new genetic diversity.