Assessment of Tolerance Level of Different Rice Genotypes Against Sogatella furcifera (Homoptera: Delphacidae)
Assessment of Tolerance Level of Different Rice Genotypes Against Sogatella furcifera (Homoptera: Delphacidae)
Ijaz Haider1,2,3*, Muhammad Sufyan1*, Muhammad Akhtar2, Muhammad Jalal Arif1, Modhi O. Alotaibi4, Ali Noman5, Muhammad Qasim6 and Matoor Mohsin Gilani7
ABSTRACT
Whitebacked planthopper, Sogatella furcifera Horvath (Homoptera: Delphacidae) is very dangerous and serious pest of rice crop in the world. It also causes huge damage to rice yield in Pakistan. In this experiment we studied the resistance and tolerance level of different rice genotypes against whitebacked planthopper (WBPH). In standard seed box screening test 45 genotypes were tested against WBPH. Four genotypes showed resistance with damage rating 1 to WBPH, ten with damage rating 3 were moderately resistant to WBPH. Twenty-five genotypes with rating 5 were moderately susceptible, five with damage rating 7 were susceptible to WBPH. TN1 was highly susceptible to WBPH with damage rating 9. Tolerance parameters were also studied RPP 49 was found most tolerant among selected genotypes with FPLI (21.9%), PDWL (13.72 mg) and 15.24 (D) days to wilt followed by IR 72, Basmati Pak, N22 and Super basmati. TN1 was found to be less tolerant variety with FPLI (83.4%), PDWL (121.34mg) and 5.26 (D) days to wilt. The results suggest that RPP49 emerged as tolerant variety followed by N22, Basmati Pak, Super Basmati, IR 72. There are new varieties PKBB 8, PK 10684 and PK 10436 which also showed good level of tolerance against WBPH. These genotypes should be used in future breeding programs for the development of resistance against WBPH.
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