1Forage Section Department of Genetics and Plant Breeding, CCS HAU, Hisar, Haryana
2Department of Plant Breeding and Genetics, Bihar Agricultural College, BAU, Sabour (BAU Communication No.: 402/2018)
Department of Entomology, Bihar Agricultural College, BAU, Sabour
*Email: entoramanuj@gmail.com
Online published on 5 February, 2019.
Experiments were carried out at the Research Farm of Bihar Agricultural College, Sabour, Bhagalpur, Bihar during rabi of 2015–16 and 2016–17 to evaluate mustard germplasm against Lipaphis erysimi. A total of 77 germplasm accessions were evaluated based on population buildup of mustard aphid and infestation index. IC491089 was tolerant and had least number of aphid population (21.3–30.7 aphids/top 10 cm of central shoot/plant). IC385703 was highly susceptible and had 87.0–195.3 aphids/top 10 cm of central shoot/plant. Based on infestation index, four, three, 54 and 16 accessions of mustard were categorized under tolerant, moderately tolerant, susceptible and highly susceptible categories, respectively. Accessions namely, IC491089, IC312545, IC385686 and IC 312553 were identified for further use in the breeding programme to develop tolerant varieties against L. erysimi.
Mustard, Lipaphis erysimi, screening, population buildup, infestation index, tolerant, susceptible
