Indian Society of Genetics & Plant Breeding


Relationship of downy mildew resistance with yield related traits helpful for achieving reliable selection criteria in opium poppy (Papaver somniferum L.)

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Present study aims to understand the nature and degree of
relationships between different morphometric and yield
influencing traits using correlation and path coefficient
analysis in medicinally important plant opium poppy.
Genotypic and phenotypic correlation coefficients analysis
showed significant negative correlation between downy
mildew disease severity Index (DSI) and seed and straw
yield. Furthermore, path analysis showed direct and positive
effect of capsule diameter and number of capsule/plant to
straw yield. In contrast, DSI had highest direct and negative
contribution to straw yield. These results support
effectiveness of selections for high seed and straw yield
together with downey mildew-resistance in development
of effective selection criteria for crop improvement.

Keywords: Downy mildew, disease resistance, opium poppy, Peronospora arborescens, straw alkaloid


Year: 2015
Volume: 75
Issue: 3
Article DOI: 10.5958/0975-6906.2015.00064.4
Print ISSN: 0019-5200
Online ISSN: 0975-6906


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