International Journal of Advance Agricultural Research
ISSN: 2053-1265
Vol. 9(4), pp. 51-60, September 2021

QTL mapping for seed weight and seed yield-related traits in oil-seed crop rapeseed (Brassica sp.)

Zeeshan Ahmed Solangi1, Yanmei Yao1, Zhang Yani1, Taj Muhammad1, Qurban Ali Rattar2, Shoaib Tahir1, Ghulam Mustafa1 and Dezhi Du1*

1Qinghai Academy of Agricultural and Forestry Sciences, Qinghai University, Xining, 810016, China.
2Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education, Nanjing, Peoples Republic of China.

*To whom correspondence should be addressed. E-mail:

Received 05 June, 2021; Received in revised form 11 August, 2021; Accepted 16 August, 2021.


Seed weight, Quantitative trait loci, Fine mapping, Molecular marker.

Vegetable Brassica is one of the world's most vital oil-seed crops and provides the basis of world supplies, so to satisfy the popularity of live stocks for vegetable oil and good fats, it is essential to cultivate and improve the production of rapeseeds. Quantitative trait loci (QTL) is a viable tool for characterizing large loci and also important in molecular marker assisted breeding programs. Seed yield (SY) is a complex trait controlled by different loci and directly influenced by the seed weight, the number of seed per silique, and silique per plant. SY is also affected by some other yield related traits like (plant height, silique length, biomass weight, flowering time and seed size). Among all the SY traits thousand seed weight (TSW) is one of the most leading factors in rapeseed crop and is significantly correlated with yield per plant. Thus to improve the seed weight (SW), different SW and seed size genes have been successfully cloned. This study records the known QTLs of seed-yield that are frequently associated with rapeseed features. As a total of 972 QTLs for seed-yields and yie0ld related are identified on 16 chromosomes and aligned in to the physical map of Brassica napus darmor-bzh. Moreover in 65 regions 147 potential candidate genes are identified, where 131 QTLs are renowned overlapped and is supposed to effect nine different traits. (flowering time, number of primary branches, plant height, pod numbers, seed number per pod, silique per unit area, seed weight, seed yield and test weight). Current such findings is studied and revised in this paper form pervious published research papers and explain the mechanisms of the genes for SW of oilseed rape that has been cloned as well as QTLs with the help of molecular markers assisted breeding for yield-related traits and this work also provide the basic knowledge for the cloning of genes responsible for seed weight (SW) and yield related traits that could be used for improvement in Brassica genus as well as B. napus.

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