Registration of Eight Extra‐Long Staple Upland Cotton Germplasm Lines

Abstract

Eight extra‐long staple (ELS) upland cotton (Gossypium hirsutum L.) germplasm lines, TAM A106‐15 ELS (Reg. No. GP‐894, PI 654359), TAM A106‐16 ELS (Reg. No. GP‐895, PI 654360), TAM B147‐21 ELS (Reg. No. GP‐896, PI 654361), TAM B182‐33 ELS (Reg. No. GP‐897, PI 654362), TAM C66‐16 ELS (Reg. No. GP‐898, PI 654363), TAM C66‐26 ELS (Reg. No. GP‐899, PI 654364), TAM C147‐42 ELS (Reg. No. GP‐900, PI 654365), and TAM C155‐22 ELS (Reg. No. GP‐901, PI 654366), were developed by the Cotton Improvement Laboratory, Department of Soil and Crop Sciences, Texas AgriLife Research (Texas A&M University, College Station), and released in 2008 as part of an ongoing effort to create germplasm with combinations of improved fiber quality parameters, especially upper half mean (UHM) length and fiber bundle strength. All ELS lines exhibited high volume instrument (HVI) UHM fiber length greater than 32.0 mm, which is the minimum UHM to be classified as ELS upland according to Cotton Incorporated. Seven of the eight lines equaled or exceeded the minimum UHM length of 34.8 mm for pima (G. barbadense L.) in the USDA 2007 pima loan schedule in at least one performance trial. Fiber bundle strengths of the eight lines were equal to or higher than ‘Fibermax 832’.