Genetic variation and diversity of pearl millet [ Pennisetum glaucum (L.)] genotypes assessed for millet head miner, Hel
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Genetic variation and diversity of pearl millet [Pennisetum glaucum (L.)] genotypes assessed for millet head miner, Heliocheilus albipunctella resistance, in West Africa Riyazaddin Mohammed Niango Malick Ba
. Prakash I. Gangashetty
. Laouali Karimoune .
Received: 31 July 2019 / Accepted: 31 August 2020 Ó Springer Nature B.V. 2020
Abstract Pearl millet (Pennisetum glaucum L.), the major source of minerals and dietary energy for people living in the semi-arid regions of Sahel, is regularly damaged by millet head miner, Heliocheilus albipunctella. In order to identify the plant-based resistance sources for millet head miner along with high grain Fe and Zn, we have screened forty pearl millet genotypes, using an artificial infestation method. Analysis of variance revealed significant differences in the genotypes tested for head miner resistance. The genotypes Gamoji, ICMP 177001, ICMP 177002, ICMV 177003, ICMV IS 90311, LCIC9702, Souna 3, ICMV IS 94206 and PE08043 exhibited antibiosis resistance mechanism to Heliocheilus albipunctella with appreciable agronomy and grain yield when compared with the susceptible check ICMV IS 92222. The genotypes Faringuero, ICMV 167005, ICMV IS 99001, Sadore local, SOSAT-C88, and ICMP 177004 exhibited tolerance to head miner damage with good per se performance. The genotypes ICMP 177001, ICMP 177002, ICMV 177003, and Moro exhibited resistance to millet head miner and had consistent grain Fe content across seasons (ranging from 44 to 70 ppm). Association between the head miner resistance and morphological traits showed a positive and
R. Mohammed (&) P. I. Gangashetty L. Karimoune N. M. Ba International Crops Research Institute for the Semi-Arid Tropics, BP 12404, Niamey, Niger e-mail: [email protected]
significant correlation of larval production index (%) with head miner damage (r = 0.59**). Grain Fe and Zn contents exhibited negative association with panicle length and grain yield indicating proper care should be taken in breeding for these traits. Hence, the identified resistance sources can be effectively utilized in breeding head miner resistant pearl millet OPV’s/ hybrids, with high grain yield including Fe and Zn concentrations, to overcome the hunger and malnutrition seen in populations living in the semi-arid tropics. Keywords Pearl millet Millet head miner Heliocheilus albipunctella Host plant resistance Antibiosis Tolerance
Introduction Pearl millet [Pennisetum glaucum (L.) R. Br.], is a highly cross-pollinated cereal, and is the sixth most important crop globally (Yadav and Rai 2013). It is diploid (2n = 14) with high photosynthetic efficiency and biomass production potential. It is grown in over 40 countries in 31.2 million hectares of land with a productivity of 910.9 kg/ha (FAOSTAT 2017). It is the staple food grain for people living in semi-arid and arid regions, including some of the world’s poorest smallholder farm families and those most threatened by climate change (Schlenker and Lobell 2010).
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