Registration of Three Germplasm Lines of Cotton Derived from Gossypium hirsutum L. Accession T2468 with Moderate Resistance to the Reniform Nematode

Abstract

Three upland cotton (Gossypium hirsutum L.) germplasm lines, MT2468 Ren1 (Reg. No. GP‐944, PI 663908), MT2468 Ren2 (Reg. No. GP‐945, PI 663909), and MT2468 Ren3 (Reg. No. GP‐946, PI 663910), that are moderately resistant to the reniform nematode (Rotylenchulus reniformis Linford and Oliveria) were jointly developed and released by the USDA‐ARS and the Mississippi Agricultural and Forestry Experiment Station in 2011. The day‐neutral germplasm lines originated from the photoperiodic G. hirsutum accession T2468. Resistance to the reniform nematode suppresses reproduction approximately by one‐half of that occurring on a susceptible check. The lines exhibit considerable differences for agronomic and fiber traits, and their moderate level of resistance should be valuable to cotton breeding programs.