Genomic identification and phenotypic evaluation of yield traits and bacterial wilt resistance in high oleic peanut breeding lines developed by marker assisted backcrossing
文献类型： 外文期刊
作者： Fang, Yuanjin 1 ; Liu, Hua 1 ; Zhang, Zhongxin 1 ; Qi, Feiyan 1 ; Chen, Qingzheng 3 ; Liu, Haidong 3 ; Wan, Liyun 4 ; Wang, Xiao 1 ; Tian, Mengdi 1 ; Lv, Dengyu 1 ; Sun, Ziqi 1 ; Dong, Wenzhao 1 ; Huang, Bingyan 1 ; Zhang, Xinyou 1 ;
作者机构： 1.Henan Acad Agr Sci, Henan Acad Crop Mol Breeding, Key Lab Oil Crops Huang Huai Hai Planis, Minist Agr,Henan Prov Key Lab Oil Crops Improveme, Zhengzhou, Peoples R China
2.Nanjing Agr Univ, Coll Agr, Nanjing, Peoples R China
3.Hezhou Inst Agr Sci, Hezhou, Peoples R China
4.Jiangxi Agr Univ, Nanchang, Jiangxi, Peoples R China
关键词： Peanut; Arachis hypogaea; Oleic acid; Bacterial wilt resistance; Genotyping by target sequencing; Yield related traits; Marker assisted backcross
期刊名称：EUPHYTICA （ 影响因子：2.185； 五年影响因子：2.387 ）
ISSN： 0014-2336
年卷期： 2022 年 218 卷 6 期
页码：
收录情况： SCI
摘要： The peanut rich in oleic acid in seed oil, also known as high oleic peanut, renders its products superior in human healthy diet, long shelf life and high oxidative stability in food and oil processing. High oleic peanut varieties in China are derived from a handful of high oleic donors with limited genetic background. Improvement of high oleic peanut cultivars by integrating key target traits is crucial for both food security and germplasm enhancement. Several superior high oleic peanut lines have been developed by marker assisted backcrossing in our breeding program. The objective of present study is to characterize bacterial wilt disease resistance and yield related traits in these novel peanut lines. The two-year disease nursery survival rates were used as an indicator for bacterial wilt resistance, and the diagnostic markers identified by QTL mapping were used for molecular verification. Genetic background of high oleic peanut lines was estimated by 40 K genotyping by target sequencing (GBTS) SNP panel. Preliminary and regional yield tests were performed for selected breeding lines in 2021. As a result, an elite high oleic peanut accession Yuhua183 was identified, inheriting the superior characteristics of its recurrent parent such as resistance to bacterial wilt, high shelling percentage and early maturity. The development of Yuhua183 broadened the genetic background of high oleic peanut germplasm, providing valuable genetic resources for peanut breeding and further utilization.
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