Superior japonica rice variety YJ144 with improved rice blast resistance, yield, and quality achieved using molecular design and multiple breeding strategies
文献类型: 外文期刊
作者: Mao, Ting 1 ; Zhu, Mingdong 1 ; Ahmad, Shakeel 1 ; Ye, Guoyou 5 ; Sheng, Zhonghua 1 ; Hu, Shikai 1 ; Jiao, Guiai 1 ; Xie, Lihong 1 ; Tang, Shaoqing 1 ; Wei, Xiangjin 1 ; Hu, Peisong 1 ; Shao, Gaoneng 1 ;
作者机构: 1.China Natl Rice Res Inst, China Natl Ctr Rice Improvement, State Key Lab Rice Biol, Hangzhou 310006, Peoples R China
2.Liaoning Inst Saline Alkali & Utilizat, Panjin 124010, Peoples R China
3.Hunan Rice Res Inst, Changsha 410125, Peoples R China
4.Ayub Agr Res Inst, Maize Res Stn, Faisalabad 38850, Pakistan
5.Int Rice Res Inst, Rice Breeding Innovat Platform, Manila 1301, Philippines
关键词: Rice blast resistance; Molecular design breeding; TPAP functional marker; Multiple genes pyramiding; Anther culture technology
期刊名称:MOLECULAR BREEDING ( 影响因子:2.589; 五年影响因子:2.75 )
ISSN: 1380-3743
年卷期: 2021 年 41 卷 10 期
页码:
收录情况: SCI
摘要: Yanfeng 47 (YF47) is an elite japonica rice variety cultivated in China on nearly 2 million hectares over the past 20 years. However, YF47 is highly susceptible to rice blast (Magnaporthe oryzae), one of the most destructive rice diseases. In this study, we developed novel TPAP (tetra-primer ARMS-PCR) functional markers for the genes Pita, Pib, and Pid2, all of which afford broad-spectrum resistance to blast. A collection of 91 japonica rice germplasms with similar ecological characteristics to YF47 were screened, and Wuyunjing 27 (WYJ27) with Pita and Pib alleles and P135 with the Pid2 allele were identified. Furthermore, the corresponding positive Pita, Pib, and Pid2 alleles were transferred into YF47 using single, mutual, and backcrosses, together with molecular marker-assisted selection (MAS) and anther culture technology. These genetic materials, carrying one, two, or three functional alleles, were generated within 3 years, and compared to YF47, they all showed improved resistance to naturally inoculated rice blast. Further improved lines (IL) 1 to 5 (all containing Pita, Pib, and Pid2 alleles) were evaluated for yield performance, and when no fungicide was applied, all lines except IL-4 showed increased traits compared with those of YF47. IL-5, renamed Yanjing 144 (YJ144), showed yield increases in the Liaoning province regional variety comparison test and superior appearance quality compared to YF47. Our work provides a molecular design strategy for pyramiding multiple beneficial genes to rapidly improve rice blast resistance, yield, and quality using multiple breeding strategies.
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