Matric Priming Increases Germination Rate of Great Basin Native Perennial Grasses

摘要: Cheatgrass (L.) is an undesirable nonnative annual that germinates at relatively low temperatures in the spring and fall can establish a root system more quickly than Great Basin native perennial grasses. The purpose of this study was to determine whether seed priming could be used enhance low-temperature germination rate grasses so they better compete with cheatgrass. A matric-priming technique increase seven grasses: blue-bunch wheatgrass [ (Pursh) Love], thickspike (Scribn. & J.G. Smith) Gould; syn. (Hook.) Scribn.], basin wildrye Merr.) A. sheep fescue (L.), canby bluegrass (Scribn.), sandberg (Vasey), bottlebrush squirreltail (Nutt.) Smith]. Seeds primed both 10 25°C were evaluated for response 25°C. Days 50% () ≈ 4 d cheatgrass germinated 10°C. Native grass seeds control treatments between about 11 later Priming reduced by 8 all species when Germination 10°C generally higher 25°C, except wildrye. increased cold temperature bluebunch wheatgrass, level comparable