Registration of Five Wheat Isogenic Lines for Leaf Rust and Stripe Rust Resistance Genes

We report here the release of four germplasm lines of hard red spring (HRS) wheat (T. aestivum L.) [Yecora Rojo Yr36– Gpc-B1 (Reg. no. GP-793, PI 638740), Yecora Rojo Lr47 (Reg. no. GP-791, PI 638738), Kern Lr47 (Reg. no. GP-792, PI 638739), and Anza Lr37/Yr17/Sr38 (Reg. no. GP-795, PI 638742)] and one durum wheat (T. turgidum L.) [UC1113 Yr36– Gpc-B1 (Reg. no. GP-794, PI 638741)], isogenic for leaf rust (Puccinia triticina Eriks.) resistance gene Lr47, stripe rust (P. striiformis West. f. sp. tritici) resistance gene Yr36, and the Lr37/Yr17/Sr38 leaf, stripe, and stem rust (P. graminis Pers.: Pers. f. sp. tritici Eriks. & E. Henn.) resistance gene complex. All genes were transferred by six backcrosses to their respective recurrent parents and molecular markers for each gene were used to select heterozygous plants for the targeted genes. After the sixth backcross plants were self-pollinated and homozygous BC6F2 plants were selected using markers. The isogenic lines are expected to be more than 99% identical to their recurrent parents.