کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8879614 | 1624788 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quantifying the germination response of spring canola (Brassica napus L.) to temperature
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Germination tests were carried out at constant temperatures of 8, 12, 16, 20, 24, 28, 32, 33, 34, 35 and 36â¯Â°C. The thermal time model accurately described germination patterns of different cultivars in response to temperature over sub- and supra-optimal. The thermal thresholds for seed germination, base temperature (Tb), sub-optimal thermal time needed to achieve 50% germination (θT(50)), maximum germination temperature for induction of 50% thermoinhibition in seeds (Tc(50)) and supra-optimal thermal time to complete germination (θTc) differed significantly among the canola cultivars studied. The values of Tb, θT(50), Tc(50) and θTc ranged from 4.86 to 7.10â¯Â°C, 358.89-407.19â¯Â°C h, 33.90-34.42â¯Â°C and 27.66-38.26â¯Â°C h, respectively. Within each cultivar optimum temperature (To(G)) showed little variation amongst different germination percentiles. The magnitude of To(50) ranged from 31.86 to 32.25â¯Â°C depending on the cultivar. The thermal thresholds for seed germination identified here explained the differences in seed germination found among cultivars. All model parameters may be readily used in crop simulation models.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 122, 15 October 2018, Pages 195-201
Journal: Industrial Crops and Products - Volume 122, 15 October 2018, Pages 195-201
نویسندگان
Abolfazl Derakhshan, Abdolmehdi Bakhshandeh, Seyed Ata-allah Siadat, Mohammad-Reza Moradi-Telavat, Seyed Bahram Andarzian,