Indian Society of Genetics & Plant Breeding

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RESISTANCE TO PUCCINIA RECONDITA TRITICI IN SYNTHETIC HEXAPLOID WHEATS

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Sixty seven elite synthetic wheats were evaluated at seedling and adult plant stages
in the greenhouse and field, respectively. 77-5, a most virulent leaf rust pathotype
was used in both seedling and adult plant studies. Out of 67 accessions, 40 were
highly resistant at seedling and adult plant stages, while 24 synthetic hexaploid
were highly resistant as adult plants and highly susceptible as seedlings. Only 3
accessions were observed to be susceptible at both the stages. A high degree of
genetic variability for leaf rust resistance was observed at both seedling and adult
plant stages in these synthetic wheats. The study revealed the presence of a number
of genes for seedling and adult plant resistance in synthetic hexaploid wheats. These
new sources of resistance could be incorporated in hexaploid wheats to diversify
the existing gene pool for leaf rust.
 

Keywords: Synthetic hexaploid wheats, Triticum turgidum, Triticum tauschii, Thinopyrum ponticum, Leaf rust (Puccinia recondita)

Info

Year: 1998
Volume: 58
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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