Reproductive traits in four spontaneous Pappophorum vaginatum populations in arid Argentina

Abstract Arid zones, where native rangelands are common, essentials for millions of people livelihood. These areas support 50% the world's livestock and 44% food is grown. In Central Argentina, Pappophorum vaginatum basically unique, warm-season perennial grass species palatable to grazing livestock. Our major objective was determine variability in reproductive characteristics among four spontaneous, overgrazed populations (i.e., P1, P2, P3, P4) that identify promissory materials domestication. Studies were conducted during three consecutive growing seasons within southwestern part Phytogeographical Province Monte, Buenos Aires, Argentina. Measured related flowering initiation, seed production natural reseeding potential. Significant differences found initiation potential, but not viable anthecia per plant P. vaginatum. This fructified from beginning end studied with a great plant. The light weight these their awns would favor wind dispersal most likely establishment new seedlings suggests sexual reproduction might have relatively greater importance than asexual tillering) persistence communities region. Selection late will allow extend forage better quality. on this study supports idea be start selection programs obtain improved germplasm reincorporate grasslands south Region Monte (Argentina) only increase also recover maintain biodiversity.