RAJ KUMAR, DALIP KUMAR, BAJRANG LAL SHARMA, TARUN VERMA, PAVITRA KUMARI, VIVEK KUMAR SAINI, SUMIT MEHLA1 AND POOJA YADAV
Department of Entomology, CCS Haryana Agricultural University, Hisar-125 004 (Haryana), India
Department of Plant Pathology, CCS Haryana Agricultural University, Hisar-125 004 (Haryana), India Department of Zoology, Government College, Hisar-125001 (Haryana), India
*(e-mail: dshroff@hau.ac.in)
(Received : 10 June 2024: Accepted : 28 June 2024)
SUMMARY
An investigation was carried out during Kharif, 2021 at CCS HAU, Hisar to know the reaction of sorghum shoot fly in 40 sorghum genotypes, replicated three times in randomized block design. Deadheart caused by shoot fly varied from 6.23 to 23.94 per cent with mean 15.80 per cent at 21 days after crop emergence and from 11.42 to 43.48 per cent having mean 27.43 per cent at 28 days after crop emergence in 40 sorghum genotypes. Sorghum genotypes categorized in three classes’ i.e, 1, 2 and 3 on the basis of deadheart formation at 21 DAE, eight (8) genotypes given a score of 1 having deadheart per cent less than 10. At 28 days after crop emergence, all the genotypes lie within a range of 2–5 scale. 14 sorghum genotypes (SH 1936, CSV 33 MF, SH 2026, 467 x SSG, SH 2018, SH 1603, GP 2008, GP 2043, GP 2031, GP 2099, GP 2029, HBM 3, IS 2312 and IS 2205) were assigned a scale rating of 2.0 indicating that the deadheart percentage ranged from 11 to 20 per cent exhibited resistance against shoot fly in the field. Seven (7) genotypes namely; GP 2101, GP 2055, SH 1934, SH 1955, SH 1919, DJ 6514 and Swarna received a 5 scale rating implying a deadheart percentage between 41 and 50 indicating higher affinity of sorghum shoot fly.
Key words: Resistance, screening, shoot fly, sorghum genotypes