RT Journal T1 FIRST REPORT OF LEAF SPOT DISEASE OF CALOTROPIS GIGANTEA CAUSED BY PASSALORA CALOTROPIDIS IN LAHORE, PAKISTAN A1 I. Mukhtar A1 I. Khokhar A1 S. Mushtaq JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 23 IS 2 SP 670 OP 671 YR 2013 FD 2013/04/01 DO DOI NA AB

Aak [Calotropis gigantea (L.) R. Br. ex. Ait.] leaf and stem samples infected by leaf spot were collected during August and September 2011 from Lahore Pakistan . Infected leaf and stem surfaces were covered with circular to irregular blackish spots. Conidiophores 15-50 × 4-6 x µm, arising from substomatal stroma in loose fascicles of 8 -15, pale to light golden yellow, simple, sometimes geniculate near tip, 0-3 transversely septate. Conidia solitary, thin and smooth walled, cylindric to cylindro-obclavate, 0-8 septate, obconic base, subobtuse to bluntly rounded tip, 10-130 × 4-6 µm. Morphological characteristics and pathogenecity test confirmed the identification as Passalora calotropidis . However, this is the first report of P. calotropidis on Calotropis gigantea from Pakistan.

K1 leaf spot, Calotropus, Pakistan, Passalora calotropidis PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2013-JAPS-249