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PNL Volume 14
1982
RESEARCH REPORTS
SUPPLEMENTARY EVIDENCE FOR THE LINKAGE OF afila WITH MUTANTS ON
CHROMOSOME 1
Kielpinski, M. Plant Breeding Station, Prusinowo, Poland
The afila (af) gene which converts leaflets into tendrils is now
widely used in breeding programs around the world.
The data of Khangildin (1), Marx (2), and Snoad (3) place aX in
chromosome 1 in the region of I.. My own findings confirm those presented
by others.
The following lines were used:
— Induced af ila mutant in cv. 'Wasata' (genotype: af Red I_)
— WL 1535 from Weibullsholm collection (genotype: Af red i)
—Variety 'Allround' (genotype: Af Red i)
The genetic analysis was carried out on F_ progeny derived from the
following crosses: a_f Red I (Wasata) x Af Red i. (Allround) and
af Red I (Wasata) x Af red i (WL 1535).
The crosses revealed the expected linkages, i.e. af-i and af-red.
The Cro value for genes af -1 was 8.3 ± 2.9, and for genes af-red
3.1 + 1.3 (Table 1). This compares with 14.5 ± 1.6% between af-1 as
determined by Snoad (3) and < 9% between af-red (1). It should be noted
that my data, like those of Marx (1), show a deficiency of red
segregants, thus evidently confirming the difficulty of scoring for red
in an af background.
