| 0 | PI 697033 | Arkot 0908-60 | Gossypium hirsutum L. | Arkansas, United States | NLGRP | | Not Available | 2021 | DEVELOPED | | | | | | Breeding material | Arkot 0908-60 is a conventional cotton germplasm line with morphological traits similar to 'UA222' and 'UA48' (check cultivars), except Arkot 0908-60 has lower trichome density on abaxial leaves than UA222, lower stem pubescence density than UA222 or UA48, and higher density on bract margins than UA48. Lint yields of Arkot 0908-60 from replicated field tests at four sites in Arkansas over five years exceeded lint yields of UA222 and UA48 at each location. Over all locations, lint yields of Arkot 0908-60 were 16.6 and 27.3% greater than UA222 and UA48, respectively. Soils at all sites are silt loams, except the Sharkey clay at Keiser. Compared to UA222, Arkot 0908-60 produced higher lint fraction (41.9 vs. 40.2%), seed ha-1 (17878 x 1000 vs. 15270 x 1000), plant height (106 vs. 100 cm), fiber micronaire (4.83 vs. 4.54), and short fiber content (7.0 vs. 6.7%); equal open boll percentage (52 vs. 50%), lint index (7.6 vs. 7.7 fiber density (145 vs. 149 fibers mm-2 of seed coat), marginal bract trichome density (34.5 vs. 35.5 trichomes cm-1 ), quality score (54 vs. 56), fiber length (31.5 vs. 31.2 mm, fiber uniformity index (85.4 vs. 85.6%), fiber strength (317 vs. 323 kN m kg-1 ), fiber elongation (5.8 vs. 6.3%), and lower seed index (10.2 vs. 11.1 g), fibers per seed (14876 vs. 16224), leaf pubescence rating (2.5 vs. 4.1 ), and stem pubescence (4.8 vs. 5.6 rating. Arkot 0908-60 is resistance to all U.S. races of Xanthomonas citri ssp. malvacearum (ex Smith 1901) Schaad et al. 2007, the causal agent of bacterial blight. Damaged flowers for Arkot 0908-60 (50%) was lower than UA48
(55%) and susceptible check (74%) but higher than UA222 (42%) in tests of resistance to tarnished plant bug [Lygus lineolaris (Palisot de Beauvais)]. Lint yields at site of high Verticillium wilt suggest that Arkot 0912-60 is more tolerant to Verticillium wilt than UA222 and UA48, but its Verticillium wilt leaf symptoms were equal to both check cultivars. | 2112248 | PI 697033 |
| 1 | PI 697034 | Arkot 0908-56 | Gossypium hirsutum L. | Arkansas, United States | NLGRP | | Not Available | 2021 | DEVELOPED | | | | | | Breeding material | Arkot 0908-56 is a conventional cotton germplasm line with morphological traits similar to 'UA222' and 'UA48' (check cultivars), except Arkot 0908-56 has higher trichome density on abaxial leaves and on bract margins than either cultivar, and lower density on stems than UA222. Lint yields of Arkot 0908-56 from replicated field tests at four sites in Arkansas over five years exceeded lint yields of UA222 and UA48 at each location. Over all locations, lint yields of Arkot 0908-56 were 14.1 and 24.6% greater than UA222 and UA48, respectively. Soils at all sites are silt loams, except the Sharkey clay at Keiser. Compared to UA222, Arkot 0908-56 produced higher lint fraction (42.8 vs. 40.2%), seed ha-1 (16737 x 1000 vs 15270 x 1000), lint index (7.9 vs. 7.7 g), plant height (108 vs. 100 cm), leaf pubescence rating (5.4 vs. 4.1), marginal bract trichome density (41.8 vs. 35.5 trichomes cm-1 ), fiber micronaire (4.74 vs. 4.54), fiber length (31.8 vs. 31.2 mm); equal open boll percentage (56 vs. 50%), fiber density (150 vs. 149 fibers mm-2 of seed coat), quality score (62 vs. 56), fiber uniformity index (86.0 vs. 85.6%), fiber strength (320 vs. 323 kN m kg-1 ); and lower stem pubescence (5.1 vs. 5.6 rating), seed index (10.3 vs. 11.1 g), fibers per seed (15589 vs. 16224), fiber elongation (5.7 vs. 6.3%), and short fiber content (6.5 vs. 6.7%). Arkot 0908-56 is resistance to all U.S. races of Xanthomonas citri ssp. malvacearum (ex Smith 1901) Schaad et al. 2007, the causal agent of bacterial blight. Damaged flowers for Arkot 0908-56 (50%) was lower than UA48 (55%) and susceptible check (74%) but higher than UA222 (42%) in tests of resistance to tarnished plant bug [Lygus lineolaris (Palisot de Beauvais)]. Lint yields at site of high Verticillium wilt suggest that Arkot 0908-56 is more tolerant to Verticillium wilt than UA222 and UA48, but it expressed more Verticillium wilt leaf symptoms than either check cultivar. | 2112249 | PI 697034 |
| 2 | PI 697035 | Arkot 0908-52 | Gossypium hirsutum L. | Arkansas, United States | NLGRP | | Not Available | 2021 | DEVELOPED | | | | | | Breeding material | Arkot 0908-52 is a conventional cotton germplasm line with morphological traits similar to 'UA222' and 'UA48' (check cultivars), except Arkot 0908-52 has lower trichome density on abaxial leaves than UA222 and higher density on bract margins than UA48. Lint yields of Arkot 0908-52 from replicated field tests at four sites in Arkansas over five years exceeded lint yields of UA222 and UA48 at each location, except equal yields with UA222 at Rohwer. Over all locations, lint yields of Arkot 0908-52 were 13.9 and 24.3% greater than UA222 and UA48, respectively. Soils at all sites are silt loams, except the Sharkey clay at Keiser. Compared to UA222, Arkot 0908-52 produced higher lint fraction (42.3 vs. 40.2%), seed ha-1 (17100 x 1000 vs 15270 x 1000), plant height (106 vs. 100 cm), quality score (67 vs. 56), fiber length (32.3 vs. 31.2 mm), and short fiber content (6.9 vs. 6.7%) ; equal lint index (7.7 vs. 7.7 g), fiber density (152 vs. 149 fibers mm-2 of seed coat), open boll percentage (51 vs. 50%), stem pubescence (5.6 vs. 5.6 rating), marginal bract trichome density (34.9 vs. 35.5 trichomes cm-1 ), fiber micronaire (4.57 vs. 4.54), and fiber uniformity index (85.6 vs. 85.6%); and lower seed index
(10.3 vs. 11.1 g), fibers per seed (15686 vs. 16224 ), leaf pubescence rating (2.0 vs. 4.1 ), fiber strength (307 vs. 323 kN m kg-1 ), and fiber elongation (5.3 vs. 6.3%). Arkot 0908-52 is resistance to all U.S. races of Xanthomonas citri ssp. malvacearum (ex Smith 1901) Schaad et al. 2007, the causal agent of bacterial blight. Damaged flowers for Arkot 0908-52 (58%) was lower than the susceptible check (74%), equal to UA48 (55%) but higher than UA222 (42%) in tests of resistance to tarnished plant bug [Lygus lineolaris (Palisot de Beauvais)]. Lint yields at site of high Verticillium wilt suggest that Arkot 0908-52 is more tolerant to Verticillium wilt than UA222 and UA48, but its Verticillium wilt leaf symptoms were equal to both check cultivars. | 2112250 | PI 697035 |