Phenotypic Evaluation of 63 Mutated Lines of TAM 94 L-25

Phenotypic evaluation of 63 mutated lines of TAM 94 L-25

Seed of TAM 94 L-25 (Smith, 2003) were treated with EMS in 2001 and the M₂ generation produced at Lubbock, Texas in 2002 by Dick Auld.  More than 1200 M₃ plants were grown at College Station, Texas in 2004, harvested individually, and HVI fiber properties determined at the Fiber and Biopolymer Research Institute at Lubbock.  These individual plants gave rise to the 63 lines being evaluated in this study.  The M₀ generation averaged 1.21 in. UHM (range = 1.12 - 1.31), 29.4 g/tex strength (range = 25.4 – 33.6), and 3.4% elongation (range = 2.1 – 4.8).  The mutants ranged from 0.87 to 1.46 in for UHM, strength ranged from 20.4 to 42.9 g/tex, and elongation ranged from 1.0 to 6.2%.  Agronomic performance trials were conducted on these 63 lines along with the M₀ check and two commercial variety checks.  These tests were conducted in 2008 and 2009 in College Station and Weslaco, Texas.  Within-boll yield components were examined for 13 mutant lines and the three checks.