Evaluation of Resistance to Rice Panicle Blast with Resistant Genes Pi-b, Pi-ta, Pikm and Pi54

doi:10.7668/hbnxb.2014.03.040

Abstract

Abstract: In this study, 64 late maturity japonica test lines of Jiangsu Province were detected with the functional markers of rice blast resistance genes Pi-b, Pi-ta, Pikm and Pi54 in rice.Combined with the identification of rice panicle blast resistance, the role of blast resistance genes Pi-b, Pi-ta, Pikm and Pi54 for Japonica rice breeding with blast resistance in Jangsu Province has been analysized.There were 49 lines containing rice blast resistance gene Pi-b, 26 lines containing Pi-ta, 19 lines containing Pikm, 25 lines containing Pi54 in 64 lines.Through artificial or disease nursery identification, the resistance performance into 2 levels(Moderate resistance) of disease resistance were 10 lines, 3 levels(Susceptible) were 43 lines, 4 levels(High susceptible) were 11 lines.If new lines contain blast resistance genes Pi-ta(26 new lines), or combined with Pi-b, Pikm and Pi54 (4 new lines), the levels of panicle blast resistance showed 2 levels(Moderate resistance) or 3 levels(Susceptible) and never 4 levels(High susceptible), while lines with other resistance gene combinations generally exhibited 4 grade levels of panicle blast resistance(High susceptible).A correlation showed that only the rice blast resistance gene Pi-ta has certain correlation with Panicle Blast Resistance(r=0.344, P<0.01).

Key words: Rice, Rice panicle blast, Functional markers

CLC Number:

S435.11

FAN Fang-jun, WANG Fang-quan, LIU Yong-feng, WANG Jun, ZHU Jin-yan, LI Wen-qi, ZHONG Wei-gong, YANG Jie. Evaluation of Resistance to Rice Panicle Blast with Resistant Genes Pi-b, Pi-ta, Pikm and Pi54[J]. journal1, 2014, 29(3): 221-226. doi: 10.7668/hbnxb.2014.03.040.

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http://www.hbnxb.net/EN/Y2014/V29/I3/221

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