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Journal of Plant Registrations Abstract - GERMPLASM

Registration of NC05AZ21 Okra-Leaf and NC05-11 Normal-Leaf Upland Cotton Germplasms

 

This article in JPR

  1. Vol. 7 No. 3, p. 334-338
     
    Received: Mar 05, 2013
    Published: July 8, 2013


    * Corresponding author(s): vasu_kuraparthy@ncsu.edu
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doi:10.3198/jpr2013.03.0011crg
  1. Vasu Kuraparthy *a,
  2. Daryl T. Bowmana and
  3. Don C. Jonesb
  1. a Dep. of Crop Science, Box 7620, North Carolina State Univ., Raleigh, NC 27695
    b Cotton Incorporated, 6399 Weston Parkway, Cary, NC 27513

Abstract

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.

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Copyright © 2013. Copyright © by the Crop Science Society of America, Inc.