Indian Society of Genetics & Plant Breeding
IN formulating programmes for the genetic improvement of yield, a breeder is
confronted at the outset by a rather complex problem, namely, the choice of parents for hybridization. This is because yield is a complex character, comprising a
number of components each of which is polygenically controlled and, therefore,
very susceptible to environmental fluctuations. The choice becomes still more
difficult when the breeder has to select the parents from a large collection of
germ plasm maintained at his breeding station. In predominantly selfpollinated crops, the technique of line xtester cross analysis has appeared to be
a useful tool for screening the lines with rapidity and a reasonable degree of
confidence. The present paper reports on such a study carried out during
1960-61 in linseed (Linum usitatissimum L.). The parental material for the
experiment was selected with a view to ascertaining the interrelationship between
ecogeographic diversity and genetic diversity and obtaining information on the
adequacy of the testers with regard to their nature and number.
Year: 1966
Volume: 26
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
S. P. SINGH and A. B. JOSHI info_circle
Download PDF