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Abstract
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Article Information:
Identification of Antixenosis and Antibiosis in Two Newly Explored Brown Planthopper-resistance Rice Lines
Yong-fu Qiu, Ling Cheng, Ping Zhou, Fang Liu and Rong-bai Li
Corresponding Author: Rong-bai Li
Submitted: October 03, 2012
Accepted: October 03, 2012
Published: October 20, 2012 |
Abstract:
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The rice brown plant hopper (Nilaparvata lugens Stål, BPH) is one of the typical piercing-sucking insect
pests to feed on rice phloem sap. Breeding and cultivation of resistant rice varieties is the most economical and
efficient method for managing the BPH. In the present study, we aimed to detect the BPH-resistance level of two
newly explored rice lines and to identify the BPH-resistance mechanism of the resistant lines with respect to
physiological function. Consequently, rice lines Q660 and Q327 exhibited a highly resistant to the BPH insects with
the average resistance scores of 2.8 and 3.2, respectively in the seedling bulk test. The settling BPH numbers were
significant less in the Q660 plant at 48 h and in the Q327 plant at 120 h after release, indicating that antixenotic
factors were presented in both rice lines. After treated with 4 days, the BPH population growth rates were
significantly restrained in the resistant rice lines Q660 and Q327 indicated by the weight changes of the BPH on the
different genotypic plants. Furthermore, the BPH survival rates on the rice line Q660 also significantly decreased
compared with that on the rice line 93-11 after treated with 4 days. By contrast, there was no significant difference
in the survival rate between Q327 and 93-11 plants. The identified resistant rice lines should be of great benefit for
the BPH-resistant rice varieties.
Key words: Antibiosis , antixenosis, brown plant hopper (nilaparvata lugens stål), oryza rufipogon, resistance resource, ,
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Cite this Reference:
Yong-fu Qiu, Ling Cheng, Ping Zhou, Fang Liu and Rong-bai Li, . Identification of Antixenosis and Antibiosis in Two Newly Explored Brown Planthopper-resistance Rice Lines. Advance Journal of Food Science and Technology, (5): 299-303.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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