A Modified Method to Assess Secondary Dormancy in the Seeds of Different Rapeseed Lines and Cultivars
محل انتشار: مجله منابع ژنتیک، دوره: 7، شماره: 2
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 373
فایل این مقاله در 10 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_SGR-7-2_010
تاریخ نمایه سازی: 10 شهریور 1400
چکیده مقاله:
The exposure of seeds to undesirable soil conditions induces secondary dormancy and this causes many problems for seed producers. Assessing seed secondary dormancy potential is an important factor in developing rapeseed lines and cultivars. A relatively rapid, precise, and reproducible method derived from the Hohenheim standard dormancy test (HSDT) has been developed for secondary dormancy evaluation of ۴۱ rapeseeds (Brassica napus L.) lines and ۵ cultivars. The two previous methods, HSDT and rapid secondary dormancy (RDT) were compared with our suggested fast-reproducible dormancy test (FRDT) method. All three methods consider three stages for seeds i.e. dormancy induction, germination in darkness, and breaking secondary dormancy. In the FRDT method, time to germination in darkness and seed dormancy breakage duration decreased to ۷ and ۴ days, respectively, whereas the corresponding figures in the HSDT were ۱۴ and ۷ days. Meanwhile, the duration of the three stages in sum decreased from ۳۵ to ۲۵ days. The obtained ranges of seed dormancy in different lines and cultivars as assessed by HSDT, FRDT, and RDT varied from ۶ to ۹۸.۷۵, ۷.۵ to ۹۹, and ۰ to ۳۶%, respectively. Positive relationships were found between data of the seed secondary dormancy testing by HSDT and FRDT methods. Owe to the precise and reproducible estimates, both HSDT and FRDT methods can be used for testing seed secondary dormancy in different rapeseed lines and cultivars. This method helps seed breeders to improve the screening of new rapeseed lines and cultivars with lower potential for secondary dormancy and as a result reduce the risk of volunteer rapeseed emergence in the field, which compromises yield in the next growing season.
کلیدواژه ها:
نویسندگان
Ali Shayanfar
Seed and Plant Certification and Registration Institute, Agricultural Research, Education and Extension Organization, Karaj, Alborz, Iran
Farshid Ghaderi-Far
Department of Agronomy, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
Rahmatollah Behmaram
Research Institute of Agriculture and Natural Resources of Golestan Province, Gorgan, Iran
Afshin Soltani
Department of Agronomy, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran
Hamidreza Sadeghipour
Department of Biology, Golestan University, Gorgan, Iran
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :