Phenotypic Screening of Rice Cultures for Resistance against Brown Plant Hopper (Nilaparvata lugens Stal) at Warangal, India
R. Shravan Kumar *
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
Y. Hari
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
K. Rajendra Prasad
Department of Genetics and Plant Breeding, Agricultural College, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
B. Satish Chandra
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
U. Nagabhushanam
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
B. Madavi
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
G. Neelima
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
D. Ashwini
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
V. Venkanna
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
R. Uma Reddy
Regional Agricultural Research Station, Professor Jayashankar Telangana State Agricultural University (PJTSAU), Warangal-506 007, Telangana, India.
*Author to whom correspondence should be addressed.
Abstract
Brown planthopper (BPH), Nilaparvatalugens Stal (Homoptera: Delphacidae), is one of the most destructive insect pests causing significant yield losses in rice production. During Kharif, 2021, a set of 91 rice cultures were screened against brown plant hopper (BPH) through standard seed box technique in screen house at Regional Agricultural Research Station, Warangal. Resistant checks RP 2068-18-3-5 recorded Damage Score (DS) of <3, Mo-1 recorded DS of 3.67, PTB 33 recorded DS of 3.29. Mean damage score was 8.94 in the susceptible check Taichung Native 1(TN-1) against BPH. The 2 entries viz., RPGP-1066-36-12-1-2 and WS-18-OYT-72/BPH were found to be highly resistant to BPH. RPGP-1386-3-1-1-1 was found to be resistant to BPH. 5 entries viz., BPT 3025, RPGP-1011-100-56-1-4-1, RPGP-2212-8-1-2-2, KNM 12505 and WS-18-AYT-10/BPH were found to be moderately resistant to BPH. Cultivation of resistant cultures will reduce the cost of plant protection against BPH in addition to protection of natural enemies and environment. The rice cultures exhibiting resistance against BPH may be helpful in crossing programmes to develop BPH resistant varieties which shall be used in IPM as a component.
Keywords: Brown plant hopper, rice cultures, seed box technique, resistance