Results 201 to 210 of about 1,160,164 (253)

Sequential sampling: planthoppers in rice

Crop Protection, 1986
Abstract A sequential sampling plan was developed for the brown planthopper, Nilaparvata lugens Stal, and the whitebacked planthopper, Sogatella furcifera Horvath in rice. The plan was tested in several different areas in the Philippines and compared with a more intensive sampling technique.
M. Shepard, E.R. Ferrer, P.E. Kenmore, J.-P. Sumagil   +3 more
openaire   +1 more source

Rice Resistance to Planthoppers and Leafhoppers

Critical Reviews in Plant Sciences, 2012
For over 50 years, host-plant resistance has been regarded as an efficient method to reduce yield losses to rice caused by delphacid and cicadelid hoppers. Already a number of resistant rice varieties have been developed and deployed throughout Asia. To date, over 70 hopper resistance genes have been identified in rice; however, less than 10 genes have
Daisuke Fujita, Ajay Kohli, Finbarr G. Horgan   +2 more
openaire   +1 more source

A novel negative thermotaxis behavior in rice planthoppers is regulated by TRPA1 channel.

Pest Management Science, 2020
BACKGROUND In the field, we observed that many white-backed planthoppers (Sogatella furcifera, WBPH) stayed at the top region of rice plants exposed to direct sunshine. It was known that WBPH frequently took flight when the ground temperature is about 25°
Hualiang He, Rui-yuan Zhao, Kui Hu, Lin Qiu, Wen-Bing Ding, Youzhi Li   +5 more
semanticscholar   +1 more source

Genetic and biochemical mechanisms of rice resistance to planthopper

Plant Cell Reports, 2016
This article presents a comprehensive review on the genetic and biochemical mechanisms governing rice-planthopper interactions, aiming to contribute substantial planthopper control and facilitate breeding for resistance to planthoppers in rice. The rice planthopper is the most destructive pest of rice and a substantial threat to rice production.
Yang, Ling, Zhang, Weilin
openaire   +2 more sources

The MYC2-JAMYB transcriptional cascade regulates rice resistance to brown planthoppers.

New Phytologist
Plant defense against herbivores is primarily regulated by the phytohormone jasmonate (JA). At the core, JA signaling is the MYC2 transcription factor (TF) that regulates the expression of an extensive array of defense-related genes.
Meng-Yu Liu, Hui-Jing Li, Yu-Meng Chen, Zhi-Xin Wu, Siwen Wu, Jing Zhang, Rui Sun, Y. Lou, Jing Lu, Ran Li   +9 more
semanticscholar   +1 more source

The ROI of Rice Planthopper by image processing

2017 International Conference on Applied System Innovation (ICASI), 2017
Rice Planthopper (RPH) infestation in paddy field is a serious disaster in Asia every year. Finding RPHs based on image processing is an important thing before RPHs growth. We propose a region of interest (ROI) method to detect RPHs clearly. First, get rectangle ROI in HSV space and do color analysis. By using decision tree algorithm, classify analytic
Tsung-Han Tsai, Ting-Yu Lee, Po-Hsun Chen   +2 more
openaire   +1 more source

Preference Assessment of White-backed Planthopper Feeding on Rice

Journal of Visualized Experiments, 2020
Exploiting insect-resistant rice germplasm resources and related genes is the primary need for breeding insect-resistant varieties, but the accuracy of the identification of insect-resistant phenotypes of rice is a major difficulty. It is urgent to develop a new method or improve existing methods to screen rice for insect resistance.
Lei, Zhang, Chao, Wu, Yutao, Xiao
openaire   +2 more sources

Biosystematics of rice brown planthopper and rice green leafhoppers

Proceedings: Animal Sciences, 1987
The Brown planthopper,Nilaparvata lugens (Stal) is causing serious damage to rice cultivation in tropical countries of Asia for the last 10–15 years. Green leafhoppers,Nephotettix spp. are also assuming serious proportions in different parts. This has been attributed to improved rice production technology, especially with the introduction of high ...
openaire   +1 more source

Prediction of rice brown planthoppers based on system dynamics

2015 12th International Conference on Fuzzy Systems and Knowledge Discovery (FSKD), 2015
Rice brown planthoppers are the main pest of Chinese rice production, and belong to the long distance migratory pest. The descriptive model of a rice brown planthopper has complex features, which are dynamic, continuous, nonlinear, multi-variable, multi-feedback, and so on.
Qingren Wang, Youhua Zhang, Fei Xie 0002, Xindong Wu 0001   +3 more
openaire   +2 more sources

Mechanisms of Rice Planthopper Resistance to Insecticides

2014
History of insecticidal control of rice planthoppers in Asia and associated resistance development is summarized. Rice planthoppers have developed resistance against all the insecticides that were commonly used. Experiences of past 30 years of chemical control of the rice planthoppers in many parts of Asia confirm that the use of any kind of ...
Zewen Liu, Jincai Wu, Yixi Zhang, Fang Liu, Jianxiang Xu, Haibo Bao   +5 more
openaire   +1 more source