Registration of ‘Plainsmen’ tall wheatgrass

Abstract

Plainsmen' (Reg. no. CV-288, PI 698191) tall wheatgrass [Thinopyrum ponticum (Podp.) Z.-W. Liu & R.-C. Wang], also tested under the experimental designations NFTW6020 and Jose FYLD C1, was developed by the Noble Research Institute and released in 2014.A population was developed from selections from the cultivar 'Jose' for persistence under grazing and two cycles of selection for digestibility. The parents of Plainsmen were selected using within-and among-family selection from this population based on autumn forage yield greater than 100% of the nursery mean. The heading date of Plainsmen in Ardmore, OK, is on average 5 d earlier than that of Jose.Seed size, as indicated by 1,000-seed weight, of Plainsmen (4,724 mg) was greater than that of Jose (4,161 mg) and 'Platte' (3,143 mg). Persistence was improved by selection, with stands of Plainsmen ranging from 90 to 294% greater than stands of Jose across three locations. Total autumn forage yields of Plainsmen were greater by 45 and 53% than those of Jose at Iowa Park, TX, and Ardmore, OK, respectively. Crude protein and digestibility of Plainsmen and Jose were similar in both the autumn and spring, despite earlier maturity of Plainsmen. Seedling vigor, using a visual rating scale of 0-5, was greater for Plainsmen (4.3) than Jose (2.7). Plainsmen was released due to its improved autumn forage yield and persistence under grazing relative to Jose.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

Screening of Salt-Tolerant Thinopyrum ponticum Under Two Coastal Region Salinity Stress Levels

“…To date, eight Th. ponticum varieties (Jose, Largo, Alkar, Nebraska98526, Orbit, Platte, NFTW6001, and Plainsmen) have been developed and released in the United States and Canada (Alderson and Sharp, 1994;Trammell et al, 2016;Trammell et al, 2021). Two salttolerant varieties (Tyrrell and Dundas) were bred in Australia (Rogers and Bailey, 1963;Smith and Kelman, 2000).…”