Morphological and pathological characterization of Fusarium verticillioides from different maize growing areas of Punjab

Authors

  • HARLEEN KAUR*, CHANDER MOHAN and MANDEEP SINGH HUNJAN

Keywords:

Fusarium verticillioides, maize, morphological variability, pathogenic potential, stalk rots

Abstract

Fifty six isolates of Fusarium verticillioides were obtained from the diseased samples collected from different maize growing areas of Punjab. The isolates showed considerable variability in their cultural characteristics, morphology and pathogenic potential to maize (Zea mays L.). The colony colour and pigmentation varied from white to light pink to purple to dark purple colonies. Based on the colony growth, isolates were categorised as slow, medium and fast growing with average colony growth rate ranging from 9.1 to 10.7, 10.8 to 11.3 and 11.4 to 16.4 mm/day respectively. Comparison of colony colour and sporulation potential of different isolates revealed that generally isolates with dark purple colony colour and dark purple pigmentation with appressed growth were heavily sporulating, isolates with white to dirty white colonies with fluffy growth were less sporulating and the isolates with light pink to purple colonies had moderate sporulating potential. On the basis of multivariate cluster analysis of both qualitative and quantitative data, all the 56 isolates were grouped into 7 major clusters and the maximum number of isolates was represented by cluster II with 18 isolates. They were grouped into seven major clusters based on their cultural and morphological characteristics. Within these clusters, as the sporulation of each cluster increased there was decrease in the average growth rate per day. Pathological behaviour of all isolates of F. verticillioides differed on a set of five inbred lines (LM-13, CM-140, CM-143, CML-25 and CM-600) and four maize hybrids (PMH 1, JH 3459, NK 6240 and 31-Y-45). Average disease index of isolates grouped in different clusters was found positively correlated with sporulation (+0.30) as well as mean growth rate (+0.40) of isolates.

Downloads

Issue

Vol. 69 No. 2 (2016): Indian Phytopathology

Section

Research Articles

License

For Authors

As soon as an article is accepted for publication, authors are requested to assign copyright of the article (or to grant exclusive publication and dissemination rights) to the publisher (Indian Phytopathlogical Society). This will ensure the widest possible protection and dissemination of information.

For Readers

While the advice and information in this journal is believed to be true and accurate at the date of its publication, the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may have been made. The publisher makes no warranty, express or implied, with respect to the material contained herein.

All articles published in this journal are protected by copyright, which covers the exclusive rights to reproduce and distribute the article (e.g., as offprints), as well as all translation rights. No material published in this journal may be reproduced photographically or stored on microfilm, in electronic data bases, on video disks, etc., without first obtaining written permission from the publisher. The use of general descriptive names, trade names, trademarks, etc. in this publication, even if not specifically identified, implies that these names are protected by the relevant laws and regulations.

How to Cite

MANDEEP SINGH HUNJAN, H. K. C. M. and. (2016). Morphological and pathological characterization of Fusarium verticillioides from different maize growing areas of Punjab. Indian Phytopathology, 69(2), 190-194. http://epubs.icar.org.in/ejournal/index.php/IPPJ/article/view/58380