Registration of ‘Acala 1517–09R’ Cotton

Abstract

‘Acala 1517–09R’ (Reg. No. CV‐127, PI 659506) was developed by the New Mexico Agricultural Experiment Station and released in 2010 as a new Roundup Ready Acala cotton (Gossypium hirsutum L.) cultivar. This new cultivar was a single plant selection derived from a backcross BC3F2 between a Roundup Ready gene donor and ‘Acala 1517–99’ as the recurrent parent, and it possesses the superior fiber quality of Acala cotton and high yield potential. Acala 1517–09R was tested in 11 replicated field trials in New Mexico from 2004 to 2007, seven field tests in other southwest locations (eastern Arizona and the High Plains of Texas) in 2004–2007, and seven locations outside of the southwest arid region of the Cotton Belt in 2005. Acala 1517–09R had similar or higher (averaged 15.6% higher) lint yield than the standard, Acala 1517–99, across all the environments tested in New Mexico. Its yield was similar to or higher than that of Acala 1517–99, except for one test outside of the southwest. On average, Acala 1517–09R had longer and finer fibers than Acala 1517–99, with a slightly higher lint percentage but reduced boll weight and fiber strength. Acala 1517–09R is best adapted to the southwest arid region of the Cotton Belt, where the traditional Acala 1517 cultivars have been grown.