Indian Society of Genetics & Plant Breeding

Important

INHERITANCE OF SEEDLING RESISTANCE TO SOME INDIAN RACES OF YELLOW RUST IN INTERVARIETAL CROSSES OF TRITICUM AESTIVUM

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RUSTS are the most important of the pathogenic fungi which attack the wheat crop
in India. Of the three prevalent rusts,
viz., Puccinia glumarum (Eriks. and Henn.);
Puccinia triticina (Eriks.) and Puccinia graminis tritici (Eriks. and Henn.) Yellow rust
(C.O.
Puccinia glumarum) causes greater damage to the Indian hill-wheat crop than the
other two rusts, which attack the crop only in the comparatively low-elevation hills.
The studies made so far on the inheritance of resistance to Indian races of yellow rust
pertain to adult stage resistance and have been recently reviewed by Sikka (1955).
The resistance of Rivet wheat in crosses with the susceptible varieties, Red King and
Red Fife, was observed by Biffen (1907) to be controlled by a single factor difference.
Monohybrid segregation was also observed by a number of other workers. Favret
and Vallega (1953) too reported a mono-factorial segregation in crosses of the resistant variety, Chino 166, with a number of other susceptible varieties. Resistance
was observed to be dominant. The inoculum was shown to comprise of three
races. The resistance of Chinese white, Spalding's Prolific and Carsten's V, in crosses
with a number of Indian varieties of wheat was observed by Pal (1951) to be due
to single dominant genes. Pesola (1927) has reported the resistance against yellow
rust to be controlled by two genes in crosses of Extra Kolben with the susceptible
varieties, Prelude, Hamkkijan, Ruskea and Marquis. Tri-factorial inheritance has
recently been reported by Pal, Sikka and Rao (1956) in the cross of the resistant
variety, Frondoso with susceptible NP. 789. Resistance to yellow rust being controlled
by several genes has been noticed by Straib (1934) in the cross of resistant Chinese
166 with susceptible Peragis and resistant Heine's Kolben with susceptible Rumker's
Sommerdickkopf
  

Info

Year: 1960
Volume: 20
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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