Indian Society of Genetics & Plant Breeding

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EPISTATIC GENE EFFECTS FROM THE TRIPLE TESTCROSS ANALYSIS IN F2 POPULATION OF OATS FOR FORAGE YIELD AND QUALITY

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A triple test-cross analysis in F2 population offorage oats detected both complementary as
well as duplicate epistatic gene effects for green fodder and dry matter yield. For quality
traits viz., protein content and in vitro dry matter digestibility (IVDMD), however, only
duplicate type epistasis wa"s observed. Both additive and dominance gent effects were
involved in the inheritance of green fodder yield, dry matter yield, and digestibility. But
protein content was controlled mainly by dominant gene effects. Overdominance was
indicated for these characters. Dominant increasers were in higher proportion than
dominant decreasers for all the characters. The breeding procedures to exploit the various
types of gene effects observed for genetic improvement of forage yield and quality are
suggested.
 

Keywords: Triple test-cross, epistasis, Avena sativa L., forage yield, quality.

Info

Year: 1992
Volume: 52
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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