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Identification of new sources of resistance for pearl millet downy mildew disease under field conditions

  • Ghislain Kanfany (a1) (a2) (a3), Amadou Fofana (a3), Pangirayi Tongoona (a1), Agyemang Danquah (a1), Samuel Offei (a1), Eric Danquah (a1) and Ndiaga Cisse (a2)...
Abstract

Pearl millet is an important cereal crop for smallholder farmers’ food security in Africa and India. However, its production has stagnated due to several factors such as downy mildew (DM). Thus, a study was conducted to identify new sources of resistance from pearl millet inbred lines derived from a collection of landraces originated from West and Central African countries. A set of 101 lines, including 99 inbred lines from West and Central Africa along with a 7042S and SOSAT C 88 as susceptible and resistant checks, respectively, were evaluated under field conditions with infector rows in Bambey and Nioro research stations during the rainy season of 2016. Data on DM incidence and severity, plant height, flowering time, panicle length and productive tillers were recorded. The results showed highly significant differences among lines for all observed traits. Among the tested lines, 55 including SOSAT C 88 were resistant, 16 moderately resistant and 30 including 7042S were susceptible to the disease. Out of the 55 resistant lines, 20 were disease free. Hierarchical ascendant cluster analysis grouped the lines into three clusters with the DM parameters and plant height as the most discriminant factors. Cluster II contains the susceptible lines, while cluster III comprises the moderately resistant lines. The lines which belongs to cluster I were characterized by their resistance to the disease. Further use of these available new sources of resistance will be very useful for improvement of pearl millet for DM resistance and other agronomic traits.

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Corresponding author
*Corresponding author. E-mail: gkanfany@wacci.edu.gh
References
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Gemenet, DC, Hash, CT, Sy, O, Zangre, RG, Sanogo, MD, Leiser, WL, Parzies, HK and Haussmann, BIG (2014) Pearl millet inbred and testcross performance under low phosphorus in West Africa. Crop Science 54: 25742585.
Haussmann, BIG, Boubacar, A, Boureima, SS and Vigouroux, Y (2006) Multiplication and preliminary characterization of West and Central African pearl millet landraces. International Sorghum and Millets Newsletter 47: 110112.
Howarth, CJ and Yadav, RS (2002) Successful marker assisted selection for drought tolerance and disease resistance in pearl millet. IGER Innovations 6: 1821.
Kumari, J, Bag, MK, Pandey, S, Jha, SK, Chauhan, SS, Jha, GK, Gautam, NK and Dutta, M (2016) Assessment of phenotypic diversity in pearl millet [Pennisetum glaucum (L.) R. Br.] germplasm of Indian origin and identification of trait-specific germplasm. Crop and Pasture Science 67: 12231234.
Williams, RJ, Singh, SD and Pawar, MN (1981) An improved field screening technique for downy mildew resistance in pearl millet. Plant Disease 65: 239241.
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Plant Genetic Resources
  • ISSN: 1479-2621
  • EISSN: 1479-263X
  • URL: /core/journals/plant-genetic-resources
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