MAS Breeding of Hanghui 1173,a Blast-resistant Rice Restoring Line of Hybrid Rice

doi:10.7668/hbnxb.2014.06.021

Abstract

Abstract: Cultivar Hanghui 173 is the restorer line,a parent for a number of hybrids in our research group.However,cultivar Hanghui 173 is highly susceptible to rice blast.In this study,a rice blast resistance gene Pi46 was introgressed to improve the blast resistance and amylose content of Hanghui 173 and its derived hybrids,by marker-assisted selection (MAS).Our results showed that,the improved Hanghui 1173 conferred a broad spectrum resistance and showed stable panicle blast resistance for five at natural blast nursery.The result of examining agronomic traits showed that the improved Hanghui 1173 and its hybrids were similar to controls.

Key words: Rice blast, Restorer, Marker-assisted selection

CLC Number:

SUN Da-yuan, ZHOU Dan-hua, XIAO Wu-ming, YANG Qi-yun, WANG Hui, ZHANG Jian-guo, CHEN Zhi-qiang. MAS Breeding of Hanghui 1173,a Blast-resistant Rice Restoring Line of Hybrid Rice[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(6): 121-125. doi: 10.7668/hbnxb.2014.06.021.

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http://www.hbnxb.net/EN/Y2014/V29/I6/121

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