Six mutant lines of cotton (Gossypium hirsutum L.) with superior fiber quality were developed by the Department of Plant and Soil Science at Texas Tech University at Lubbock, TX, and released in 2019. Additional evaluations were conducted at Texas A&M University, College Station, TX, and at the USDA‐ARS, Crop Genetics Research Unit, Stoneville, MS. Three of the lines, TTU 1‐817 (Reg. no. GP‐1076, PI 691517), TTU 1‐1051 (Reg. no. GP‐1077, PI 691518), and TTU 1‐1283 (Reg. no. GP‐1078, PI 691519), were selected from a mutant population of ‘Acala 1517‐99’. Another three lines, TTU 2‐411 (Reg. no. GP‐1079, PI 691520), TTU 2‐475 (Reg. no. GP‐1080, PI 691521), and TTU 2‐1073 (Reg. no. GP‐1081, PI 691522), were selected from a mutant population derived from TAM 94L‐25. Imbibed seeds of Acala 1517‐99 and TAM 94L‐25 were treated with 3.0% v/v of ethyl methane sulfonate (EMS). In 2002 (M₂), 2003 (M₃), and 2004 (M₄), generations of the mutant populations were advanced by harvesting a single boll from each plant and bulking the seeds to generate the next generation. In 2005, seed cotton samples were hand harvested from a total of 3,122 individual M_2:5 plants and evaluated for fiber quality. In 2012, 2013, 2014, and 2015, 33 of these M₅ lines selected from the TAM 94‐L25 mutant population and 30 M₅ lines from the Acala 1517‐99 mutant population were evaluated. Six M₅ lines were selected and released for their longer, stronger fibers and lower micronaire.

中文翻译：

---

通过甲烷磺酸乙酯的处理和选择，对六种陆地棉质量提高的陆地棉种质进行登记

棉花的六种突变株（陆地棉）L.）由得克萨斯州拉伯克市的德克萨斯科技大学植物与土壤科学系开发，并于2019年发布。在德克萨斯州A＆M大学，大学城和美国农业部进行了进一步的评估。 ARS，农作物遗传学研究组，马里兰州斯通维尔。其中三条线是TTU 1‐817（Reg。编号GP‐1076，PI 691517），TTU 1‐1051（Reg。编号GP‐1077，PI 691518）和TTU 1‐1283（Reg。编号GP） 1078，PI 691519）是从'Acala 1517-99'的突变种群中选择的。另外三条线，TTU 2‐411（Reg.No.GP‐1079，PI 691520），TTU 2‐475（Reg.No.GP‐1080，PI 691521）和TTU 2‐1073（Reg.No.GP‐ 1081，PI 691522）是从TAM 94L-25衍生的突变种群中选择的。用3.0％v / v的甲烷磺酸乙酯（EMS）处理Acala 1517-99和TAM 94L-25的吸水种子。2002年_参见图2），2003（M ₃）和2004（M ₄），通过从每株植物中收获单个棉铃并填充种子以产生下一代来使突变种群的世代发展。2005年，从总共3,122株M _2：5的植物中手工收获了籽棉样品，并对其纤维质量进行了评估。在2012年，2013年，2014年和2015年，评估了从TAM 94-L25突变群体中选择的33个M ₅品系和从Acala 1517-99突变群体中选择的30 M ₅品系。选择了6条M ₅系并释放它们，因为它们具有更长，更坚固的纤维和更低的马克隆值。