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Genetic analysis of sugarcane brown rust resistance genes in wild sugarcane germplasm Erianthus rockii ‘Yundian 95-19’ and Erianthus rockii ‘Yundian 95-20’

  • Rong-Yue Zhang (a1), Wen-Feng Li (a1), Ying-Kun Huang (a1), Xin Lu (a1), Xiao-Yan Wang (a1), Hong-Li Shan (a1), Jie Li (a1), Xiao-Yan Cang (a1), Jiong Yin (a1) and Zhi-Ming Luo (a1)...

Abstract

We assessed inheritance of resistance to sugarcane brown rust (Puccinia melanocephala) in selfing F1 populations of wild sugarcane germplasm Erianthus rockii ‘Yundian 95-19’ and E. rockii ‘Yundian 95-20’. We tested parent and selfing F1 individuals for the brown rust resistance gene, Bru1, that has been shown to confer resistance to brown rust in sugarcane. The Bru1 gene was not detected in E. rockii ‘Yundian 95-19’, E. rockii ‘Yundian 95-20’ or their selfing F1 individuals, and we found there was segregation of resistance in the two selfing F1 populations (segregation ratio: 3:1). The results confirmed resistance in E. rockii ‘Yundian 95-19’ and E. rockii ‘Yundian 95-20’ to sugarcane brown rust is controlled by a novel, single dominant gene.

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*Corresponding author. E-mail: huangyk64@163.com

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These authors contributed equally to this work.

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References

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Hoy, JW and Hollier, CA (2009) Effect of brown rust on yield of sugarcane in Louisiana. Plant Disease 93: 11711174.
Huang, YK and Li, WF (2011) Colored Atlas of Main Diseases, Insect Pests and Weeds of Modern Sugarcane. Beijing: China Agriculture Press.
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Li, WF, Wang, XY, Huang, YK, Zhang, RY, Shan, HL, Yin, J, Shen, K and Luo, ZM (2015) Establishment and application of molecular detection approach for sugarcane brown rust resistance gene Bru1. Plant Protection 41: 120124. (in Chinese, with English abstract).
Li, WF, Shan, HL, Zhang, RY, Pu, CH, Wang, XY, Cang, XY, Yin, J, Luo, ZM and Huang, YK (2017) Resistance evaluation to brown rust and molecular detection of Bru1 gene in new elite sugarcane varieties/lines. Acta Phytopathologica Sinica 47: 667674. (in Chinese, with English abstract).
Wang, LP, Cai, Q, Lu, X, Ma, L, Liu, XL, Li, WF and Xia, HM (2008) Study of wild species Erianthus rockii germplasm innovation and use. Sugar Crop of China 30: 811. (in Chinese, with English abstract).

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