Antixenosis and antibiosis mechanism of resistance in selected rice entries against brown planthopper, Nilaparvata lugens (Stal)

Abstract

Six different rice entries along with susceptible and resistant check varieties were evaluated under glasshouseconditions for different parameters of antixenosis and antibiosis resistance against brownplanthopper(BPH, Nilaparvata lugens Stål). In antixenosis studies, proportion of insects settled on test entries in relationto the susceptible control TN1 was recorded, with average lower proportion of nymphs settled on N22-CCDTM-893 and Ptb 33 in relation to those on TN1. In antibiosis studies adult population, adultlongevity andpopulation build-up were recorded. N22-CC-DTM-893 and Ptb 33 displayed significantly better performanceas compared to other test entries in these parameters studied and did not differ from each other. Theseresults helped in relative quantification of BPH resistance levels in different test entries and N22-CC-DTM-893 show substantial levels of antixenosis and antibiosis effects on BPH and it is considered as new effectivesource of BPH resistance and can be used in resistance breeding after tagging of resistant genes/QTLslinked to brown planthopper resistance with selectable molecular markers.

Molecular screening of local Indonesian rice to identified resistant varieties against brown planthopper (Nilaparvata lugens) attacks

“…This shows that this variety has higher antixenosis resistance than other varieties. Sukumar et al (2022), stated that brown planthoppers are not interested in settling in a rice variety that exhibits an antixenosis resistance mechanism. Antixenos (non-preference for the host) acts as a plant resistance mechanism to decrease the degree of pest damage (Palial et al 2022).…”

Reduction of the natural enemy population by deltamethrin and imidacloprid leads to the resurgence of brown plant hoppers (Nilaparvata lugens) in rice

“…In severe circumstances, BPH can cause so widespread damage that farmers are forced to abandon their crops. The decrease in grain yield ranges from 10% in moderately impacted fields to 70% in severely affected fields (Liu and Sun, 2016;Kumar et al, 2012;Srivastava et al, 2009). Controlling this insect pest has always been a priority, with most rice-producing countries heavily relying on the use of insecticides, particularly in areas where commercial resistant varieties are unavailable (Sivasubramaniam and Imthiyas, 2018; Seni and Naik, 2017; Wojciechowska et al, 2016).…”