Field performance of selected and landrace tepary bean varieties in diverse southwestern USA irrigated production environments

The desert Southwest is the oldest area of continuous crop production in continental USA. Tepary beans (Phaseolus acutifolius A. Gray) were a part ancient, irrigated cropping systems, but they nearly lost during twentieth century. They are now subject heightened research and breeding activity. We wished to ascertain field performance varieties improved by selection within region with those selected outside region. In one study, evaluated two locations across seasons, another, at three Rio Grande Valley, principal agricultural New Mexico. A collection 21 tepary landraces was also examined same River Valley Both landrace demonstrated capacity above 2000 kg ha−1 under conditions. Seed size (as determined 100-seed weights) varieties. Two (TARS Tep32 CSU148) displayed seed lower range small market class common beans. developmental phenology similar seasons. One variety, CSU148, high level resistance powdery mildew season favorable for disease development. other exhibited intermediate host-resistance responses infection.