Premium
Trialling techniques in the breeding and prediction of recombinant inbred lines in onions ( Allium cepa )
Author(s) -
WERNER C. P.,
DOWKER B. D.,
DeSOUZA D. C.,
CROWTHER T. C.,
HOROBIN J. F.,
KEARSEY M. J.
Publication year - 1988
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1988.tb02088.x
Subject(s) - allium , biology , inbred strain , sowing , selection (genetic algorithm) , recombinant dna , botany , microbiology and biotechnology , agronomy , horticulture , genetics , gene , computer science , artificial intelligence
SUMMARY An outline is given of a novel breeding scheme for onions to produce highly vigorous, good quality inbred lines adapted for autumn‐sowing in the UK. The scheme involves the production of advanced generation inbred lines in the absence of selection, by single seed descent, starting with 1500 F 2 plants from a Japanese × European cross. Concurrently a genetical analysis designed to predict the range of recombinant inbred lines derivable from this cross has been conducted using triple test cross (TTC) and basic generation (BG) families. Four trials are described, the results of which are used to define trialling techniques for the TTC and BG material which enable genetical predictions to be applied to direct‐drilled onions at commercial spacings. The ranking of genotypes for important agronomic characters remains unchanged whether they are grown as transplanted spaced single plants or direct‐drilled, however interactions may occur if pre‐chitted seed is used.