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- Title
Registration of two Arkot 0912 sister cotton germplasm lines.
- Authors
Bourland, Fred M.; Jones, Don C.
- Abstract
Arkot 0912‐18 (Reg. no. GP‐1098, PI 697032) and Arkot 0912‐41 (Reg. no. GP‐1097, PI 697031) are conventional cotton (Gossypium hirsutum L.) germplasm lines released by the Arkansas Agricultural Experiment Station in December 2020. Both lines were derived from crossing 'UA48' and 'UA222'. They produced higher lint yields than their parents over 5 yr and at four test sites in Arkansas. Both produced similar lint yields at each test site. Over test sites, the lines produced about 13 and 24% higher lint yields than UA222 and UA48, respectively. Arkot 0912‐18 produced the highest lint yield of all entries evaluated in the 2017 Regional Breeders Network Test. Over all locations of the 2017 Regional High Quality Test, lint yields of Arkot 0912‐41 ranked fourth out of 20 genotypes (second‐highest of 11 conventional genotypes) and equaled the lint yields of DP 1646 B2XF (U.S. patent no. 9,961,845) and PHY 444 WRF. Both lines produced higher lint percentage and lint index and were taller than either parent. Leaf pubescence, stem pubescence, and bract trichome density of each line exceeded both parents. Visual ratings of Verticillium wilt for Arkot 0912‐18 exceeded those of UA48. Both lines displayed high resistance to bacterial blight and were similar to UA222 and UA48 in their response to other diseases. The lines were more resistant to tarnished plant bug than UA48 but were more susceptible to tarnished plant bugs than UA222. Measurements of fiber quality for the two lines were intermediate between that of UA48 (excellent fiber quality) and UA222 (good fiber quality). Core Ideas: Two Arkot 0912 cotton lines were derived from crossing UA48 with UA222.Both Arkot 0912 lines produced higher lint yields than UA48 or UA222.Fiber quality of both lines was equal to or better than UA222.Both lines produced high yields across contrasting environments in regional tests.The lines combine superior host plant resistance, fiber quality, earliness, and yield traits.
- Subjects
PLANT germplasm; COTTON yields; COTTON genetics; VERTICILLIUM wilt of cotton; COTTON diseases &; pests
- Publication
Journal of Plant Registrations, 2022, Vol 16, Issue 1, p80
- ISSN
1936-5209
- Publication type
Article
- DOI
10.1002/plr2.20172