Genetic variability for shoot fly resistance, graincharacteristics, and yield in the postrainy seasonsorghums uri icon

abstract

  • Sorghum shoot fly, Atherigona soccata is one of the important pests of postrainy seasonsorghums. Combining insect resistance with desirable agronomic and morphological traitsis important to increase sorghum productivity. Of the several methods for pest control,host plant resistance is one of the major components for controlling shoot fly damage insorghum.Evaluation of 90 sorghum genotypes for resistance to shoot fly, A. soccata acrossseasons indicated that RHRB 12, ICSV 713, ICSV 25026, ICSV 93046, ICSV 25027, IS33844-5, Giddi Maldandi, and RVRT 3 were resistant to shoot fly damage in thepostrainy season, while ICSB 463, Phule Anuradha, RHRB 19, Parbhani Moti, ICSV 705,PS 35805, IS 5480, IS 5622, IS 17726, IS 18368, IS 34722, RVRT 1, ICSR 93031, andDagidi Solapur showed resistance in the rainy season, suggesting season-specificexpression of resistance to A. soccata. ICSB 461, ICSB 463, Phule Yasodha, M 35-1,ICSV 700, ICSV 711, ICSV 25010, ICSV 25019, ICSV 93089, IS 18662, Phule Vasudha,IS 18551, IS 33844-5, and Barsizoot had fewer deadhearts than plants with eggs acrossseasons, suggesting antibiosis as one of the components of resistance to shoot fly in thesegenotypes. Five genotypes exhibited resistance to shoot fly and had high grain yieldacross seasons

publication date

  • 2015