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Registration of NC05AZ21 Okra‐Leaf and NC05‐11 Normal‐Leaf Upland Cotton Germplasms
Author(s) -
Kuraparthy Vasu,
Bowman Daryl T.,
Jones Don C.
Publication year - 2013
Publication title -
journal of plant registrations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 21
eISSN - 1940-3496
pISSN - 1936-5209
DOI - 10.3198/jpr2013.03.0011crg
Subject(s) - lint , biology , cultivar , fusarium wilt , gossypium hirsutum , fiber crop , agronomy , malvaceae , horticulture , fusarium oxysporum , yield (engineering) , materials science , metallurgy
NC05AZ21 (Reg. No. GP‐966, PI 667659) is an okra‐leaf line and NC05‐11 (Reg. No., GP‐965, PI 667658) is a normal‐leaf line of Upland cotton ( Gossypium hirsutum L.). NC05AZ21 was developed from a cross of NC 72 and an unknown okra leaf, red stem line from Louisiana while NC05‐11 was developed from a cross of NC 72 and Fiber Max 989 (FM 989). NC 72 is a normal and smooth leaf line. FM 989 is a commercial, normal‐leaf cultivar. A pedigree breeding method was followed in developing these lines. Both lines were compared with two commercial cultivars across multiple environments for agronomic traits. Line NC05AZ21 was also compared with a commercial okra‐leaf cultivar FM 832 for agronomic performance. NC05AZ21 showed superior lint yield and lint percentage to and comparable fiber length as FM 832. It had a lower lint yield but longer fibers than Deltapine 455BG/RR (DP 455BG/RR) and Stoneville 5327B2RF (ST 5327B2RF) and comparable fiber strength. It has good resistance to Fusarium wilt [caused by Fusarium oxysporum Schlet.f.sp. vasinfectum (Atk.) Snyd. &Hans.] as well. It could be a good source of earliness and Fusarium wilt resistance and perhaps tolerance to boll rot (caused by numerous organisms)—the latter because of its okra‐leaf shape. NC05‐11 had comparable lint yields as DP 451BG/RR and DP 455BG/RR with superior fiber length and strength. It also had good resistance to Fusarium wilt. Both NC05AZ21 and NC05‐11 could prove to be valuable sources of additional genetic variability for cotton breeding programs having an emphasis on improving Fusarium wilt resistance and fiber quality.