Description:
Plants with large seeds (approximately twice the size of alfalfa seeds) were selected from PI 690775 and crossed with plants selected from PI 691838, that had seeds larger than alfalfa, but smaller than seeds of PI 690775. PI 690775 was derived from hybrids of alfalfa X Medicago arborea, named Alborea 301, as described in the statement for PI 690775. PI 691838 was derived from perennial X annual interspecific crosses involving alfalfa, M. arborea, M. intertexta, and M. truncatula, named ALPAX, as described in the statement for PI 691838. Large-seeded plants from both plant introductions tended to have larger leaves and stems than alfalfa. Ten such plants selected from each PI were paired with the opposing PI and crossed by hand in the greenhouse in winter. Pairs were rotated each day until a partial diallel of PI pairs was completed. This is the ALPAX -LG seed in this release.