کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4555341 1329253 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic variability in thermal-germination response of squirreltail (Elymus elymoides and Elymus multisetus)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Dynamic variability in thermal-germination response of squirreltail (Elymus elymoides and Elymus multisetus)
چکیده انگلیسی

Bottlebrush squirreltail (Elymus elymoides) and big squirreltail (Elymus multisetus) have been identified as high-priority species for restoration and rehabilitation of millions of acres of rangeland in the western United States that have been degraded by wildfire and introduced annual weeds. In this study, squirreltail accessions from Idaho, Colorado, Utah, Arizona and New Mexico were grown in a nursery environment to produce seeds in two different years for germination evaluation at 11 constant temperatures. A statistical-gridding model was used to predict cumulative germination rate of each seedlot for eight simulated planting dates between 1 January and 28 May over a 38-year seedbed-microclimatic simulation. Predicted germination response under simulated conditions of field-variable temperatures yielded a broader ecological basis for the relative ranking of thermal response than was obtained from single-value germination indices derived from either constant-temperature experiments, or from analysis of thermal-time coefficients.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental and Experimental Botany - Volume 62, Issue 2, March 2008, Pages 120–128
نویسندگان
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