@article{Adhi_Widiantini_Yulia_2022, place={Bogor (ID)}, title={Morphometric and Pathogenecity Variation of Peronosclerospora spp. The Causal Agent of Maize Downy Mildew in Java Island, Indonesia}, volume={17}, url={https://journal.ipb.ac.id/index.php/jfiti/article/view/33568}, DOI={10.14692/jfi.17.5.173-182}, abstractNote={<p><strong>Morphometric and Pathogenecity Variation of Peronosclerospora spp. The Causal Agent of Maize Downy Mildew in Java Island, Indonesia</strong></p> <p>Downy mildew disease in maize caused by Peronosclerospora spp. has been reported to cause yield loss in several production centers in Java.&nbsp; This study aimed to determine the morphometric characteristics and pathogenicity of Peronosclerospora spp.. Ten strains of Peronosclerospora were collected from maize production center in Blitar (BLT), Kediri (KDR), Kediri 2 (KDR2), Klaten (KLT), Cianjur (CJR), Garut (GRT), Jatinangor Sumedang (JTN), Rancakalong Sumedang (RCG), Indramayu (IMY), and Sukabumi (SKB). Morphometric variation was determined using microscope by observing shape of conidium; measuring cell wall thickness, length of conidiophores, dimensions of conidia; and counting the number of branches. Differences in morphology and pathogenicity between strains was evidenced. Dendogram analysis based on morphometric characters differentiated strains of Peronosclerospora into 2 main clusters. One strain, KDR2 is in the same group and identical with reference strain P. philippinensis; while the others are in the same group and identical with reference strain P. maydis. Pathogenicity test showed that IMY strain caused the lowest disease incidence (8.33%) and KLT strain caused the highest disease incidence (47.92%).</p&gt;}, number={5}, journal={Jurnal Fitopatologi Indonesia}, author={AdhiSatriyo Restu and Widiantini, Fitri and Yulia, Endah}, year={2022}, month={Jan.}, pages={173-182} }