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علوم گیاهان زراعی ایران، جلد ۴۸، شماره ویژه نامه، صفحات ۳۵-۴۱
عنوان فارسی ‌Methods for overcoming seed dormancy in jimsonweed (Datura stramonium L.)
چکیده فارسی مقاله This study aimed to examine dormancy-breaking of jimsonweed seeds. Seeds were collected from Hamedan. They were subjected to different treatments: (a) concentrated sulfuric acid for 1, 1.5, and 2 min; (b) hot water at 80°C and 90°C for 5 and 10 min; (c) mechanical scarification with sandpaper; (d) light exposure for 10, 20, and 30 days; and (e) fluctuating temperature (5–15°C). The highest germination (90%) was for seeds scarified with sandpaper, but it did not differ significantly from that of seeds scarified with sulfuric acid for 1.5 min. Hot water treatment increased germination percentage but it was lower than sandpaper and acid treatments. Superior treatment affected radicle and plumule length, vigor index, mean germination time, and seedling length. Lower α- and β-amylase activities were detected in dormant seeds, and these enzymes’ activity increased significantly in superior treatment. It seems that scarification by sandpaper or sulphuric acid for 1.5 min is a general requirement for breaking dormancy of jimsonweed seeds. So, they are recommended.
کلیدواژه‌های فارسی مقاله &،alpha،-amylase، &،beta،-amylase، germination، sandpaper،
عنوان انگلیسی ‌Methods for overcoming seed dormancy in jimsonweed (Datura stramonium L.)
چکیده انگلیسی مقاله This study aimed to examine dormancy-breaking of jimsonweed seeds. Seeds were collected from Hamedan. They were subjected to different treatments: (a) concentrated sulfuric acid for 1, 1.5, and 2 min; (b) hot water at 80°C and 90°C for 5 and 10 min; (c) mechanical scarification with sandpaper; (d) light exposure for 10, 20, and 30 days; and (e) fluctuating temperature (5–15°C). The highest germination (90%) was for seeds scarified with sandpaper, but it did not differ significantly from that of seeds scarified with sulfuric acid for 1.5 min. Hot water treatment increased germination percentage but it was lower than sandpaper and acid treatments. Superior treatment affected radicle and plumule length, vigor index, mean germination time, and seedling length. Lower α- and β-amylase activities were detected in dormant seeds, and these enzymes’ activity increased significantly in superior treatment. It seems that scarification by sandpaper or sulphuric acid for 1.5 min is a general requirement for breaking dormancy of jimsonweed seeds. So, they are recommended.
کلیدواژه‌های انگلیسی مقاله &,alpha -amylase, β-amylase, germination, sandpaper
نویسندگان مقاله علی عباسی سورکی | abbasi sourki
دانشگاه شهرکرد
سازمان اصلی تایید شده: دانشگاه شهرکرد (Shahr kord university)

حسین رضا روحی | hossein reza
دانشگاه بوعلی سینا
سازمان اصلی تایید شده: دانشگاه بوعلی سینا (Bu ali sina university)

علی مرادی |
دانشگاه یاسوج
سازمان اصلی تایید شده: دانشگاه یاسوج (Yasouj university)

فتح الله زینعلی |
دانشگاه بوعلی سینا
سازمان اصلی تایید شده: دانشگاه بوعلی سینا (Bu ali sina university)

جواد علیمرادی |
دانشگاه بوعلی سینا
سازمان اصلی تایید شده: دانشگاه بوعلی سینا (Bu ali sina university)

نشانی اینترنتی http://ijfcs.ut.ac.ir/article_63651_acc5abf58510454479d681b104a1eb30.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/995/article-995-478943.pdf
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