Growth and Morphology Characters of Elymus canadensis, Elymus sibiricus and Their Hybrid
WANG Shu-yan~1,YUN Jin-feng~2,XU Jun~2,YANG Hong-qin~3 (1.College of Agronomy, Inner Mongolia Agricultural University, Huhhot 010019, China; 2.College of Ecology and Environment, Inner Mongolia Agricultural University, Huhhot, Inner Mongoulia Aoutonmous Reigon 010019, China; 3.Grassland Station of Kerqin District in TongLiao city, TongLiao, Inner Mongoulia Aoutonmous Reigon 028020, China)
Elymus canadensis and Elymus sibiricus are two species that distribute in different regions. A study of their growth period, multiplication, spike morphology and fertility show that E.canadensis'growth period comes about 30 days behind E.sibiricus, with weaker fertility and obvious morphological differences. The hybrid F_1, formed by wide cross between the two species, boasts heterosis, though sterility is its typical character, while the other characteristics are similar to the parent species.