Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (7): 1159-1169.DOI: 10.3969/j.issn.1004-1524.2021.07.01

• Crop Science • Previous Articles     Next Articles

Molecular detection and breeding application of some disease and insect resistance genes of japonica rice varieties/lines recently developed in Zhejiang Province

HUANG Xuan(), JIN Lincan, YE Chaohui, JIANG Jiefeng, SHI Xianbo   

  1. Institute of Crops, Ningbo Academy of Agricultural Sciences, Ningbo 315040,China
  • Received:2020-12-29 Online:2021-07-25 Published:2021-08-06

Abstract:

In order to clarify the distribution of some disease and insect resistance genes of japonica rice varieties/lines recently developed in Zhejiang Province, in this study, the distribution of blast resistance gene Pita, Pib, Pigm,Pi9, Pi1, Pikh/Pi54, Pi2, Pi5, Pit, Pb1, Pikm and BPH resistance gene Bph14, Bph15, bacterial blight resistance gene Xa21, Xa23 in 61 japonica rice varieties/lines were analyzed.The results showed that the highest detection frequency of rice blast resistance gene was Pib, the distribution frequency was 91.80%, the distribution frequency of Pikm, Pi2 and Pita were 68.85%, 67.21%, 63.93%, respectively; the distribution frequency of Pit, Pi5, Pi9, Pikh/Pi54 were 34.43%, 32.79%, 26.23% and 24.59%, respectively. The distribution frequency of Pb1 and Pigm were 6.56%, 1.64%,respectively. The Pi1 was not distributed in 61 tested varieties/lines. The distribution frequency of Bph14 and Bph15 were 6.56% and 11.48%, respectively. The bacterial blight resistance gene Xa21 and Xa23were not distributed in 61 tested varieties/lines. In this study, Xa23, Bph14 and Bph15 were introduced into japonica rice by marker assisted selection, and the results showed that the above genes had good resistance. In this study, the distribution of resistance genes of 61 japonica rice varieties/lines in Zhejiang Province were preliminarily established, the results of this study will provide a scientific basis for transferring the target resistance genes into the varieties to be improved and breeding new varieties with broad-spectrum and multi resistance.

Key words: japonica rice, blast, bacterial blight, rice brown planthopper, molecular marker, resistance gene detection

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