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Assessing the Vulnerability of Sorghum Converted Lines to Anthracnose and Downy Mildew Infection

Author

Listed:
  • Louis K. Prom

    (USDA-ARS, Plains Area Agricultural Research Center, College Station, Texas 77845, USA)

  • Ramasamy Perumal

    (Western Kansas Agricultural Research Center, Kansas State University, Hays, Kansas 67601, USA)

  • Hugo Cuevas

    (USDA-ARS, Tropical Agriculture Research Station, 2200 Pedro Albizu Campos Avenue, Mayaguez, PR 00680, USA)

  • Ghada Radwan

    (Mount Saint Vincent University, Halifax, Nova Scotia, Canada)

  • Seriba Katilé

    (Institut d'Economie Rurale, IER, Station de Recherche Agronomique de Cinzana, Mali)

  • Thomas Isakeit

    (Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77843, USA)

  • Clint Magill

    (Department of Plant Pathology and Microbiology, Texas A&M University, College Station, TX 77843, USA)

Abstract

A total of 59 converted sorghum lines and 6 checks were evaluated for resistance to two foliar fungal diseases, anthracnose and downy mildew (SDM) in 2008 and 2009 growing seasons at the Texas A&M AgriLife Research Farm, College Station, Texas. In 2008, 23 lines exhibited resistance (35%), 29 susceptible (45%) and 13 variable responses (20%) while 15 lines showed resistance (28%), 31 susceptible (57%), and 8 variable responses to anthracnose in 2009. Nine lines SC748, PI534101, PI534073, PI533950, PI534155, PI533802, PI533776, PI533911 and PI533759 exhibited anthracnose resistance response in both years. Significantly a wide range of 8 to 89% SDM incidence was observed in the study. None of the lines recorded SDM resistance reaction in both years. However, 15 lines PI534119, PI533983, PI597970, PI534160, PI570726, PI534161, PI534112, PI576374, PI533753, SC748, PI533991, PI569998, PI534050, PI534155 and PI533898 recorded moderate resistance to SDM incidence and recommended for use in further breeding programs. There was a positive significant correlation (P = 0.0392) between anthracnose and SDM, indicating that the lines showing higher SDM incidence favors higher anthracnose infection. Significant correlation between precipitation and SDM was also noted. SC748 and PI534155 exhibited resistance to anthracnose and downy mildew diseases and hold promise for utilization in breeding programs as potential checks.

Suggested Citation

  • Louis K. Prom & Ramasamy Perumal & Hugo Cuevas & Ghada Radwan & Seriba Katilé & Thomas Isakeit & Clint Magill, 2016. "Assessing the Vulnerability of Sorghum Converted Lines to Anthracnose and Downy Mildew Infection," Journal of Agriculture and Crops, Academic Research Publishing Group, vol. 2(10), pages 101-106, 10-2016.
  • Handle: RePEc:arp:jacarp:2016:p:101-106
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