| 0 | PI 687864 | Arkot 0611 | Gossypium hirsutum L. | Arkansas, United States | COT | | Not Available | 2018 | DEVELOPED | | | | | | Breeding material | Morphological traits of Arkot 0611 are similar to 'DP 393' (check cultivar), except trichome density of Arkot 0611 was higher on abaxial leaf surfaces and bract margins. Lint yield of Arkot 0611 was 10.3% higher than DP 393 over 16 replicated field tests at four sites in Arkansas. By location, lint yields of Arkot 0611 were equal to lint yields of DP 393 on Sharkey clay soil at Keiser (north) and on silt loam soil at Rohwer (south), but were 19.4% higher on silt loam soil at Judd Hill (north) and 11.7% higher on silt loam soil at Marianna ( central Arkansas). Compared to DP 393, lint yields of Arkot 0611 were produced with higher lint percentage, number of seed per area, lint index, fibers per seed, and fiber density ( estimated number of fibers per unit area of seed surface); and lower seed size (seed index). Compared to DP 393, Arkot 06 I 1 produced higher leaf pubescence rating ( 4.0 vs. 2.5), marginal bract trichome density (34.0 vs. 24.9 trichomes cm-1), open boll percentage (66 vs. 61 %), lint percentage (40.8 vs. 39.5), seed per area(8.3% higher), lint index (7.6 vs. 7.5 g), fibers per seed (l 0.1 % higher), fiber density (13. 7% higher), fiber elongation (7.8 vs. 6.6%); equal plant height and stem pubescence; and lower seed index (I 0.3 vs. 11.3 g), quality score (40 vs. 49), micronaire (4.77 vs. 4.96), fiber length (30.0 vs 29.7 mm), uniformity index (83.9 vs. 85.1 %), and fiber strength (300 vs. 326 kN m Kg-1). Arkot 0611 is resistance to all U.S. races of Xanthomonas citri ssp. malvacearum ( ex Smith 190 I) Schaad et al. 2007, the causal agent of bacterial blight. Arkot 0611 had lower damaged flowers (more resistance) than DP 393 in tests of resistance to tarnished plant bug [Lygus lineolaris (Palisot de Beauvois)]. Response of Arkot 06 I I to fusarium wilt [caused by Fusarium oxysporum Schlect. F. sp. vasinfectum (Atk.) Snyd. & Hans.] was equal to the ,resistant check, M-315. | 1964026 | PI 687864 |
| 1 | PI 687866 | Arkot 0617 | Gossypium hirsutum L. | Arkansas, United States | COT | | Not Available | 2018 | DEVELOPED | | | | | | Breeding material | Morphological traits of Arkot 0617 are similar to 'DP 393' (check cultivar), except trichome density of Arkot 0617 was higher on abaxial leaf surfaces and bract margins but lower on stems. Over 16 replicated field tests at four sites in Arkansas, lint yields of Arkot 0617 were equal to lint yields of DP 393 on silt loam soil at Marianna (central Arkansas) and on silt loam soil at Rohwer (south), but were 10 .. 3% higher on Sharkey clay soil at Keiser (north) and 5.4% higher on silt loam soil at Judd Hill (north). Compared to DP 393, lint yields of Arkot 0617 were produced with higher lint percentage; equal number of seed per area, fibers per seed, and fiber density (estimated number of fibers per unit area of seed surface); and lower seed size (seed index) and weight of lint per seed (lint index). Compared to DP 393, Arkot 0617 produced higher leaf pubescence rating (4.1 vs. 2.5), marginal bract trichome density (27.6 vs. 24.9 trichomes cm·'), open boll percentage (67 vs. 61 %), lint percentage (40.3 vs. 39.5), fiber quality score (58 vs. 49), and fiber length (30.5 vs. 29.7 g); equal seed per area, fibers per seed, fiber density, micronaire, uniformity index, fiber strength, and elongation; and lower stem pubescence rating (3.2 vs. 5.0), lint index (7.4 vs. 7.5 g), and seed index (10.9 vs. 11.3 g). Arkot 0617 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. Arkot 0617 had equal damaged flowers as DP 393 in tests of resistance to tarnished plant bug [Lygus lineolaris (Palisot de Beauvois)]. | 1964028 | PI 687866 |
| 2 | PI 687865 | Arkot 0712 | Gossypium hirsutum L. | Arkansas, United States | COT | | Not Available | 2015 | DEVELOPED | | | | | | Breeding material | Morphological traits of Arkot 0712 are similar to 'DP 393' (check cultivar) except Arkot 0712 has higher trichome density on leaves, bract margins and stems and is shorter in height. Over 16 replicated field tests at four sites in Arkansas, lint yields of Arkot 0712 were equal to lint yields of DP 393 at each location. Over I 2 locations of the 2015 Regional Cotton Breeders Testing Network test, Arkot 0712 produced the 20th highest yield of 28 entries. Compared to DP 393, lint yields of Arkot 0712 were produced by higher rumber of seed per area; equal lint percentage and fibers per seed; and lower weight of lint per seed (lint index), seed size (seed index), but had lower weight of lint per seed (lint index), seed index and fiber density (estimated number of fibers per unit area of seed surface). Compared to DP 393, Arkot 0712 produced higher open boll percentage (61 vs. 57%), leaf pubescence (3.8 vs. 2.8), stem pubescence (5.5 vs. 5.1 ), marginal bract trichomes ( 42.1 vs 3 1.6), seed per area (8. 7% higher), Q-score ( 62 vs. 54 ), fiber length (30.5 vs. 29.7 mm), and elongation (7.4 vs. 6.8%),); equal lint percentage and fibers per seed; and lower plant height (4.0% shorter), lint index (7.0 vs. 7.5 g), seed index (10.6 vs. 11.2 g), fiber density (4.8% fewer), micronaire (4.48 vs. 4.85), uniformity index (84.2 vs. 85.2%) and fiber strength (294 vs 323 kN m kg-1). Arkot 0712 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. In small plot tests, Arkot 0712 was more resistant to tarnished plant bug [Lygus lineolaris (Palisot de Beauvois)] than the susceptible check and equal to DP 393. Response of Arkot 0712 to fusarium wilt [caused by Fusarium oxysporum Schlect. F. sp. vasinfectum (Atk.) Snyd. & Hans.] was equal to the resistant check, M-315. | 1964027 | PI 687865 |