Mapping Some Seed Quality Traits in Bread Wheat (Triticum aestivum L.) by Association Mapping Using SSR Markers
Message:
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Introduction
Quality characteristics including grain protein content, gluten, falling number, and SDS sedimentation volume are important contributors to the grain yield and quality of the wheat. To identify the markers associated with such traits, this study run in two separated experiments: under-field and in laboratory.
Materials and Methods
One hundred wheat genotypes were evaluated in an alpha lattice design with two replications. Association mapping using Structure and Tassel software was carried out using 102 SSR markers: 66 unlinked and 36 quantitative trait loci (QTL)-linked SSR markers. Correction for population structure was performed using genome-wide SSR markers so that genotypes were divided into six subpopulations.
Results
Thoroughly, 34 SSR markers linked with the above-mentioned traits were identified, twelve of them being QTL-linked markers. These markers were already mapped on the wheat chromosomes in previous studies containing known QTLs controlling kernel traits of the wheat. Our results confirmed 5, 3, 2, and 2 QTLs respectively for the grain protein, gluten, falling number, and SDS sedimentation volume which were previously tagged on the wheat chromosomes. Additionally, 3 QTLs were identified for the grain protein on the chromosomes 2A, 5A, 5D, and 7B. Whereas, 6 QTLs for gluten were detected on chromosomes 1A, 2D, 5A, 5B, 6B, and 7B; four QTLs were located on the chromosomes 2D, 5A, 5B, 5D, and 7D for falling number; and finally nine QTLs were found for SDS sedimentation volume on the chromosomes 1A, 1B, 2B, 3A, 3B, 4B, 6A, 6B, 7A, and 7B.
Conclusions
The results of this study indicated that association mapping is a useful method for detecting and complementing QTL information; thus, this information can be used for further wheat improvement based on a molecular marker.
Language:
English
Published:
Journal of Applied Biotechnology Reports, Volume:5 Issue: 3, Summer 2018
Pages:
92 to 99
magiran.com/p1933523  
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!