Journal of Entomological Research
SCOPUSWeb of Science
  • Year: 2000
  • Volume: 24
  • Issue: 4

Construction of life tables to establish antibiosis resistance to the gram pod borer, Heliothis armigera (Hüb) among chickpea genotypes1

  • Author:
  • R.P. Sharma, R.P. Yadav
  • Total Page Count: 4
  • Page Number: 365 to 368

Department of Entomology & Agricultural Zoology, Rajendra Agricultural University, Pusa, (Samastipur)-848125, Bihar, (India).

*Address for correspondence: Head, Department of Entomoiogy & Agricultural Zoology, Tirhut College of Agriculture, Rajendra Agricultural University, Dholi-843 121, District Muzaffarpur, Bihar, (India).

1A part of approved Ph.D. Thesis submitted by Shri R.P. Sharma to Rajendra Agricultural University, Pusa, (Samastipur)-848 125, Bihar, (India).

Abstract

Life tables for Heliothis armigera (Hübner) on ten chickpea genotypes were constructed. The net reproductive ratio (Ro), mean length or generation (Tc), intrinsic rate or daily increase (rm), nnite rate or daily increase(λ), and weekly multiplication rate (erm)7 ranged rrom 142.14 to 268.63, 39.12 to 45.22, 0.1180 to 0.1385, 1.125 to 1.148 and 2.565 to 3.016, respectively on different chickpea genotypes. Based on weekly multiplication rate or H. armigera, these genotypes could be arranged as NDG-90-27, BG-1027, BG-267, IPCK-94-4, BDG-80, IPCK-94-2, H-89-96, C-235, L-550 and P-256, in the increasing order or their suitability for or decreasing order or their antibiosis in relation to this pest. Among the ten genotypes, net reproductive rate was higher on BG-1027, while the mean length or generation was shorter on C-235 in comparison to the standard check i.e., P-256. None of the genotypes was round more suitable than P-256 for H. armigera, with respect to any or the three population growth parameters, viz., intrinsic rate or increase, finite rate of increase and weekly multiplication rate.