Registration of Glandless ‘Acala 1517‐18 GLS’ Cotton
2019
Zhang, Jinfa | Wedegaertner, Tom | Idowu, Omololu J. | Sanogo, Soumaila | Flynn, Robert | Hughs, Sidney E. | Jones, Don C.
The New Mexico Agricultural Experiment Station announces the release of the glandless ‘Acala 1517‐18 GLS’ (Reg. No. CV‐140, PI 688431) cotton (Gossypium hirsutum L.) that carries the double recessive glandless genes gl₂gl₂gl₃gl₃. Acala 1517‐18 GLS was an F₄:₆ line selected from a cross between the glandless trait donor ‘Acala GLS’ and the glanded ‘Acala 1517‐08’. This new glandless cultivar was tested in 11 replicated field trials in New Mexico in 2013 to 2016 and in 14 tests across 11 US states in 2015. Acala 1517‐18 GLS produced 93% of the lint yield in Acala 1517‐08 across all the tests without observed seedcotton losses from rodents. But it yielded 30% more lint than Acala GLS. Acala 1517‐18 GLS has similar fiber quality to Acala 1517‐08 and Acala GLS in fiber length, uniformity, strength, and micronaire but similar or higher elongation and similar or lower short fiber content. In addition to a higher seed index, Acala 1517‐18 GLS has longer and stronger fibers and higher fiber length uniformity and elongation but lower micronaire and short fiber content than most of the other medium‐staple commercial checks. As compared to Acala 1517‐08, it is more resistant to Alternaria leaf spot and has a similar or higher level of resistance to Verticillium wilt. Acala 1517‐18 GLS is adapted to the Mesilla Valley in southern New Mexico and far west Texas (e.g., El Paso County).
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