Total genomic DNA was isolated by a micro-extraction protocol (Prabhu et al., 1998 (
link)). A polymerase chain reaction (PCR) was performed in a 10 μL total reaction volume containing 2–3 μL (60–70 ng/μL) DNA, 2.0 μL 109 buffer with 25 mM MgCl
2, 0.5 μL dNTPs (10 mM) (Bangalore Genei, Bangalore, Karnataka, India), 1.0 μL each forward and reverse SSR primers (20 mM) (Sigma Inc., St. Louis, MO, United States), 0.3 μL Taq polymerase (3 U/μL) (Bangalore Genei, Bangalore, Karnataka, India), and 5.2 μL distilled water (sterile). Amplification of the template DNA was performed according to the annealing conditions for the wmc, gwm, barc, cfa, and cfd series of SSR markers used (Roder et al., 1998 (
link); Pestsova et al., 2000 (
link); Gupta et al., 2002 (
link); Somers et al., 2004 (
link); Quarrie et al., 2005 (
link); Kumar et al., 2012 (
link)). Amplified products were resolved on a 3.2% agarose gel (MetaPhor, Lonza, Rockland, ME, United States), along with a DNA ladder size standard (MBI, Fermentas), stained with 0.5 μg/mL
ethidium bromide (Amresco, Solon, OH, United States), and documented with a
gel documentation system (Bio-Rad, Hercules, CA, United States). The donor parent, C306, and recurrent parent, HD2733, were screened with 700 SSR markers, including markers associated with targeted traits.
Kumar P.K., Bellundagi A., Krishna H., Mallikarjuna M.G., Thimmappa R.K., Rai N., Shashikumara P., Sinha N., Jain N., Singh P.K., Singh G.P, & Prabhu K.V. (2023). Development of bread wheat (Triticum aestivum L) variety HD3411 following marker-assisted backcross breeding for drought tolerance. Frontiers in Genetics, 14, 1046624.