1. Pathogenic aspects ofPantoea agglomeransin relation to cotton boll age andDysdercus cingulatus(Fabricius) transmitting seed and boll rot in cotton germplasm
- Author
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Muhammad Atiq, Muhammad Ehetisham-ul-Haq, Muhammad Aslam Khan, Muhammad Talha Javed, and Abdul Rashid
- Subjects
Germplasm ,Horticulture ,Agronomy ,Inoculation ,food and beverages ,Pathogenic aspects ,Biology ,Disease progress ,Pathogenicity ,biology.organism_classification ,Agronomy and Crop Science ,Dysdercus cingulatus ,Pantoea agglomerans - Abstract
Bacterial seed and boll rot is a newly emerging cotton disease in Pakistan. Twenty-one cotton varieties were screened to find resistance source against the disease. None of these was found to be resistant. Five cotton varieties (CIM-595, MK2, BT-986, BT-986 & SG-1) having 700–1400 Area under disease progress curve (AUDPC) units were found to be moderately resistant to the disease. SLH-317, FH-942, BT-222, BT-666, MNH-457 ranging from 1401–1700 AUDPC units were moderately susceptible while MNH-456, SLH-336, 9811, FH-942, MNH-886 susceptible to boll rot. Seven varieties (FH-114, FH-113, BT-7, BT-212, SLH-BT-4, BT-212 and FH-941) were highly susceptible to bacterial seed and boll rot indicated by 2001–2300 AUDPC units. Biochemical tests identified bacterial isolates as Pantoea agglomerans. Different inoculation techniques were assessed for bacterial pathogenicity and symptoms of boll rot were only observed in needle punctured bolls. One, two and three weeks old bolls were mechanically inoculated by injecting...
- Published
- 2014
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