Abstract

AKHTAR, Sajjad et al. Responses of different lentil populations to biotic stress (Fusarium wilt disease). Agrociencia [online]. 2016, vol.50, n.3, pp.367-373. ISSN 2521-9766.

Biotic stress (wilt) caused by Fusarium oxysporium is the most devastating soil born stress in lentil (Lens culinaris Medik) and breeding for host resistance is the best method to control wilt. Three distinct sets comprising of eight variable populations (segregating generations, their parents and standard varieties) of lentil (Lens culinaris Medik) were evaluated to observe their responses against Fusarium wilt of lentil in a nested design. This study was carried out at the Nuclear Institute for Agriculture and Biology (NIAB), at Faisalabad, Pakistan. The results revealed that the parents, standard varieties and plant progenies in segregating populations were developed through selection of single plants and showed resistance against Fusarium wilt disease. Among all sets, the populations of Set-2 and Set-3 were a good source of variation for resistance against Fusarium wilt disease, which may be evaluated and utilized for the selection of disease resistant plants. The mutated populations (AM, BM and ABM) showed more resistance in comparison with recombinant populations thus implying that using induced mutation is effective for developing resistance in lentil. Such type of resistant breeding material can minimize the impact of this disease on lentil production and would be an aid to the lentil breeders in developing high yielding and disease resistant varieties.

Keywords : Fusarium oxysporium; Lens culinaris Medik; disease scale; segregating generations.

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