Morphological and molecular variability of Podosphaera pannosa causing rose powdery mildew in Himachal Pradesh, India


Abstract views: 357

Authors

  • VIJAY KUMAR* and SUNITA CHANDEL

Keywords:

Dendrogram, isolates, RAPD marker, similarity index

Abstract

Rose powdery mildew caused by Podosphaera pannosa (Wallr.) de Bary is one of the most serious and devastating diseases of roses grown worldwide including Himachal Pradesh in natural as well as protected cultivation. Different isolates of six districts were morphologically distinguished from one another with respect of size of mycelium, conidia and conidiophores which ranged between 4.0 to 4.8, 22.8 × 12.4 and 72.0 to 78.0 μm, respectively. Molecular characterization of ten isolated from six districts were studied with seven RAPD markers. The dendrogram revealed similarity index among ten fungal isolates ranged between 19 to 73 per cent with an average of 46 per cent. Maximum similarity of 73 per cent was observed between isolate-5 and isolates-8 of district Mandi Himachal Pradesh. Least similar was isolate-7 which had 19 per cent similarity with other isolates.

Submitted

2018-03-13

Published

2018-03-14

Issue

Section

Research Articles

How to Cite

Morphological and molecular variability of Podosphaera pannosa causing rose powdery mildew in Himachal Pradesh, India. (2018). Indian Phytopathology, 70(4), 446-451. https://epubs.icar.org.in/index.php/IPPJ/article/view/76876