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Pak. J. Bot., 47(4): 1569-1574, 2015.

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WHITE BLISTER RUSTS AND DOWNY MILDEWS FROM BAJAUR AGENCY FATA, WITH SOME NEW RECORDS FROM PAKISTAN

MUHAMMAD ABDUL HAQ^1*, SALEEM SHAHZAD² AND SYEDA QAMARUNNISA³

Abstract: In a species diversity study of Oomycyctes of Bajaur Agency FATA, Pakistan, infection of white blister rusts and downy mildews recorded on three cultivated and four wild plants. Capsella bursa-pastoris showed mixed infection of Albugo candida and Hyaloperonospora parasitica (syn: Peronospora parasitica). Similarly, A. candida and H. brassicae (syn: P. brassicae) parasitized Brassica campestris. Wilsoniana portulacae (syn: Albugo portulacae) and W. occidentalis com. nov. (syn: Albugo occidentalis) recovered from Portulaca oleracea and Spinacia oleracea, respectively. Bremia taraxaci, B. sonchicola and B. saussureae recorded on Taraxicum officinale, Sonchus sp., and Saussurea sp., respectively. All these obligate parasites are new records from Bajaur Agency, while H. parasitica, W. occidentalis, B. taraxaci, and B. saussureae on the mentioned hosts are new records from Pakistan.

Key words: White rust, Downy mildew, New records, Bajaur Agency, Pakistan.

¹Department of Botany, University of Karachi, Karachi, Pakistan

²Department of Agriculture and Agribusiness Management, University of Karachi, Karachi, Pakistan

³The Karachi Institute of Biotechnology and Genetic Engineering (KIBGE), University of Karachi, Karachi, Pakistan

^*Corresponding author’s e-mail: abdulhaq@gmail.com