<FONT face="Verdana">Effects of Temperature on Resistance of Rice to Brown Planthopper, <EM>Nilaparvata lugens</EM> </FONT>

WANG Bao-ju,XU Hong-xing,ZHENG Xu-song,FU Qiang,LU Zhong-xian

doi:10.3969/j.issn.1001-7216.2010.04.019

Chinese Journal OF Rice Science >

2010 , Vol. 24 >Issue 4: 443 - 446

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.04.019

研究简报

Effects of Temperature on Resistance of Rice to Brown Planthopper, Nilaparvata lugens

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¹Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; ²School of Life and Environment Science, Hangzhou Normal University, Hangzhou 310036, China; ³China National Rice Research Institute, Hangzhou 310006, China; *Corresponding author, E-mail: luzxmh2004@yahoo.com.cn

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-07-10

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Abstract

To investigate effect of temperature on the resistance characteristics of rice varieties with different resistance genes to rice brown planthopper (BPH), Nilaparvata lugens (Stl), the resistances of IR26(Bph1) and IR36 (bph2) to Hangzhou population of BPH were monitored in greenhouse during 2007 and 2008 by using the Standard Seedling Screening Techniques (SSST) developed by the International Rice Research Institute (IRRI). The changes in resistances of IR26 and IR36 to BPH, soluble sugar and oxalic acid contents in 25dayold rice plants of susceptible variety TN1 and resistant varieties IR26 and IR36 were detected at five temperatures (22℃, 25℃, 28℃, 31℃ and 34℃). The results showed that IR26 completely lost its resistance both at natural temperatures and at the five tested constant temperatures, IR36 still had medium level resistance under natural temperature. IR26 and IR36 showed a decreased trend in the resistance from 25℃ to 34℃, and they fully lost the resistance at 31℃ and 34℃. The highest resistance duration for both of IR26 and IR36 was recorded at 25℃. The soluble sugar contents in plants of the three tested rice varieties increased with the increasing temperature, and the oxalic acid content decreased at the temperatures higher than 25℃. Twoway ANOVA indicated the significant effects of temperature and rice variety on contents of soluble sugar and oxalic acid in rice plant.

Key words： Nilaparvata lugens; temperature; rice variety; resistance characteristics

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WANG Bao-ju,XU Hong-xing,ZHENG Xu-song,FU Qiang,LU Zhong-xian . Effects of Temperature on Resistance of Rice to Brown Planthopper, Nilaparvata lugens [J]. Chinese Journal OF Rice Science, 2010 , 24(4) : 443 -446 . DOI: 10.3969/j.issn.1001-7216.2010.04.019

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