Assessment of germination and secondary dormancy behaviours of lines and cultivars of canola
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Secondary seed dormancy is announced as the major reason for seed persistence of canola (Brassica napus L). Volunteer’s rapeseeds emerging from the soil seed bank can lead to unwanted gene dispersal to other plants after breaking secondary seed dormancy. In this study, with using poly ethylene glycol 6000, secondary dormancy was induced in 41 lines and 5 cultivars of canola under laboratory condition during 14 days and secondary seed dormancy recorded. This study was conducted in a randomized complete design. High germination percentage was shown in all lines and cultivars (higher than 94 percent), although categorized on five group included very low, low, medium, high and very high after secondary dormancy with using cluster analysis. Among different lines, five and two genotypes were placed in very low and very high groups, respectively. Most of lines were placed in average and low groups. It was observed that 5 varieties (RGS003, Zarfam, Hyola401, Hyola308 and Hyola50) had average secondary dormancy (40-60 percentage) that was related to breeding ignorance about secondary dormancy during seed production process. Lines classification based on different levels of secondary dormancy helps seed producers to select lines with low levels of it along with seed yield and other characteristics in order to deal with problems in seed producing process.
Language:
Persian
Published:
Journal of Crop Improvment, Volume:19 Issue: 4, 2018
Pages:
881 to 892
magiran.com/p1822607  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!