LEAF SCORCH OF PURPLE NUTSEDGE (CYPERUS-ROTUNDUS) CAUSED BY ASCOCHYTA-CYPERIPHTHORA SP. NOV

Authors
POMELLA AWV BARRETO RW
Citation
Awv. Pomella et Rw. Barreto, LEAF SCORCH OF PURPLE NUTSEDGE (CYPERUS-ROTUNDUS) CAUSED BY ASCOCHYTA-CYPERIPHTHORA SP. NOV, Mycotaxon, 65, 1997, pp. 459-468
Citations number
14
Journal title
Mycotaxon → ACNP
ISSN journal
00934666
Volume
65
Year of publication
1997
Pages
459 - 468
Database
ISI
SICI code
0093-4666(1997)65:<459:LSOPN(>2.0.ZU;2-3
Abstract
A new damaging foliar disease of the world's worst weed, purple nutsed ge (Cyperus rotundus), was found in the Brazilian states of Minas Gera is and Rio de Janeiro. Isolates of a previously undescribed species of Ascochyta were obtained from plants of C. rotundus showing symptoms o f leaf scorch. The name Ascochyta cyperiphthora is proposed for this n ew fungal pathogen of purple nutsedge. Inoculation of healthy plants o f purple nutsedge with a conidial suspension of A. cyperyphthora (1.8 x 10(6) spores/ml) resulted in general necrosis of aerial parts within 3 days. A. cyperiphthora was reisolated from diseased tissues.