Cotton (Gossypium hirsutum L.) Boll Rot and Associated Microorganisms in South Texas Fields  

作　　者：Greta Schuster Enrique G. Medrano Kendal Field-Huey Greta Schuster;Enrique G. Medrano;Kendal Field-Huey(Texas A&M University, Kingsville, TX, USA;United States Department of Agriculture, Agricultural Research Service, College Station, TX, USA)

机构地区：[1]Texas A&M University, Kingsville, TX, USA [2]United States Department of Agriculture, Agricultural Research Service, College Station, TX, USA

出　　处：《Agricultural Sciences》2016年第10期732-746,共16页农业科学（英文）

摘　　要：A rise in cotton boll rot in south Texas has been generally associated with increased yield losses. Here, we measured boll rot incidence during two growing seasons (2011 and 2012) at a south Texas (Kleberg County) research farm Variety Trial and in producer fields. The Variety Trial was conducted to compare boll rot susceptibility between five current cultivars. The commercial fields surveyed were located along the Coastal Bend (Wharton County) and Rio Grande Valley regions (Cameron and Willacy Counties). Bolls with evidence of external damage potentially inflicted by piercing-sucking insect vectors were dissected for disease detection and plated for microorganism isolation and characterization. Microbial isolates were putatively identified based on standard fatty acid methyl ester profile analysis. In the Variety Trial, the highest incidence of disease occurred in July for both growing seasons, and significant differences in susceptibility to boll rot between cultivars were determined (P Bacillus spp. as a potential and prevalent causative agent(s).A rise in cotton boll rot in south Texas has been generally associated with increased yield losses. Here, we measured boll rot incidence during two growing seasons (2011 and 2012) at a south Texas (Kleberg County) research farm Variety Trial and in producer fields. The Variety Trial was conducted to compare boll rot susceptibility between five current cultivars. The commercial fields surveyed were located along the Coastal Bend (Wharton County) and Rio Grande Valley regions (Cameron and Willacy Counties). Bolls with evidence of external damage potentially inflicted by piercing-sucking insect vectors were dissected for disease detection and plated for microorganism isolation and characterization. Microbial isolates were putatively identified based on standard fatty acid methyl ester profile analysis. In the Variety Trial, the highest incidence of disease occurred in July for both growing seasons, and significant differences in susceptibility to boll rot between cultivars were determined (P Bacillus spp. as a potential and prevalent causative agent(s).

关 键 词：Subtropical Agriculture Cotton Varieties Boll Rot Bacterial Opportunist Insect Vector 

分 类 号：O62[理学—有机化学]