Heavy infection of Melampsora leaf rust on Populus deltoides

Ramesh Chand Dhiman

doi:10.36808/if/2022/v148i6/169250

Heavy infection of Melampsora leaf rust on Populus deltoides

Authors

Ramesh Chand Dhiman Wimco Seedlings

DOI:

https://doi.org/10.36808/if/2022/v148i6/169250

Keywords:

Melmpsora rust, Populus deltoides, Infection Rating (IR), Rust Infection Index (RII).

Abstract

This is the first report of heavy and widespread infestation of Melampsora ruston poplar (PopulusdeltoidesBartr.) in most of its growing region located south of the Indian Himalayan foothills. The results of a field survey of its growing region, detailed study onclonal variation of commercially grown clonesandgermplasmare presented in the form of rating of the rust infection. Nurseries have been categorized on the basis of Rust Infection Index (RII). Clones rated between 0-10scale of Infection Rating (IR)have shown wide variation. Nurseries located around the core area of intensive poplar culture had higher RII compared to those in fringe locations. Similarly, wide variation has been recorded in IRof clones maintained in the germplasm.Clone W110 had maximum IR in most locations grown in the core area of poplar culture.Â

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