Author(s):
Mohammad Saleem A, Gopalakrishna Naidu K, Mahalaxmi KK, Tippannavar PS and Nadaf HL
Abstract:
Spodoptera litura is an important pest affecting the yields of groundnut worldwide and host plant resistance is a key pest management strategy. In the present study, a set of 318 recombinant inbred lines were studied for their resistance
to Spodoptera litura and productivity parameters during rainy season at hot spot location, Dharwad. Wide variation existed for
Spodoptera litura damage (7.85 – 35.65 %) and also for various productivity parameters among the recombinant inbred lines. High heritability coupled with high genetic advance for response to
Spodoptera litura, and for number of pods per plant, hundred seed weight and yield per plant among the productivity parameters indicated relatively higher additive component of genetic variance. Non-significant phenotypic (0.039) and genotypic (0.065) correlation existed between
Spodoptera litura damage and yield per plant suggesting the scope for selection of high yielding and
Spodoptera resistant lines. Among the parents, female (TAG 24) was susceptible to
Spodoptera litura (26.8 % leaf damage) while the male parent (ICGV 86031) was moderately resistant to
Spodoptera litura (14.1 % leaf damage). Among the 318 recombinant inbred lines, 15 transgressitve segregant lines showed resistance to
Spodoptera litura with less than 10 % leaf damage. Among them, C3-34 line had higher yield per plant (16.6 g) along with exhibiting tolerance to
Spodoptera litura and can serve as donor in
Spodoptera resistance breeding programme in groundnut. Further, this recombinant inbred population could be utilized in development of marker associated with
Spodoptera resistance.
Mohammad Saleem A, Gopalakrishna Naidu K, Mahalaxmi KK, Tippannavar PS and Nadaf HL. Evaluation of recombinant inbred population for Spodoptera litura resistance and productivity parameters in groundnut (Arachis hypogaea L.). J Pharmacogn Phytochem 2018;7(6):987-990.