期刊名称：Current Journal of Applied Science and Technology
印刷版ISSN：2457-1024
出版年度：2019
卷号：37
期号：4
页码：1-7
DOI：10.9734/cjast/2019/v37i430300
语种：English
出版社：Sciencedomain International
摘要：Aims: To identify Brown Planthopper (BPH) resistant rice genotypes and categorize all the test
entries based on their level of resistance against BPH.
Study Design: Completely Randomized Design.
Place and Duration of Study: Poly-house, Department of Entomology, Rice Research Centre,
Agriculture Research Institute (ARI), Rajendranagar, Hyderabad, India, between June 2016 and July
2017.
Methodology: A total of 61 elite rice genotypes selected including resistant (PTB33) and
susceptible check (TN1). All these test entries were screened against Brown Planthopper (BPH)
using Standard Seedbox Screening Technique (SSST) inside poly-house conditions. Based on the
Damage Score (DS) achieved during study, all entries were categorized into resistant (R),
moderately resistant (MR), moderately susceptible (MS), susceptible (S) and highly susceptible
(HS).
Results: Among 61 cultures, the resistant check PTB33 and BM71 exhibited R reaction to BPH with
a DS of 3.0, while twelve cultures viz. Milyang 63, IET 23993, HHZ 5 DT-1 DT-1, HHZ 25 SAL DT-1
DT-1, Bobhu Kongbu, BPT 2671, BPT 2611, MTU 1121, MTU 1001, MTU 1010, RNR 23079 and
GSR 234 exhibited MR reaction to BPH with a DS ranging between 3.1 to 5.0. The rest of the
cultures showed MS and S reactions while the susceptible check, TN1 along with other 12 cultures
exhibited HS reaction to BPH with a DS of 9.0.
Conclusion: Resistant and moderately resistant rice genotypes have been identified for
development of BPH resistant lines. Further detailed studies are required to understand the
underlying mechanisms of resistance among the R and MR genotypes.
关键词：Rice;Nilaparvata lugens;brown planthopper;Standard Seedbox Screening Test (SSST);damage score;host plant resistance.
