Cucurbit Genetics Cooperative Report 3:14 (article 8) 1980
The Identity of Genes for Glabrousness in Cucumis
sativus L.
H. Inggamer and O.M.B. de Ponti
Institute for Horticultural
Plant Breeding, Wageningen, The Netherlands
The occurrence of glabrous cucumber has been reported from
the USSR and the USA. In the USSR the cucumbers in question
are the spontaneous mutants Odnostebelnyi 33 and
Mayak 422, which were found at the Vavilov Institute
in Moldavia (3). The American material concerns a radiation-induced
mutant, selected by Robinson, New York State Agricultural
Experiment Station (2). The glabrousness of line NCSU 75-M834-6,
provided by R.L. Lower, probably originates from Robinson's
materials.
For an improved biological control of the glasshouse white
fly Trialeurodes vaporariorum Westwood with the
parasitic wasp Encarsia formosa Gahan, we introduced
glabrousness into the Dutch slicing varieties. Meanwhile
glabrous lines of good cultural value have been released
(1).
We were also interested in the identity of the genes of
the three accessions. To this end we have made a half diallel
with the lines Odnostebelnyi 33, Mayak 422,
and NCSU 75-M834-6. Fifteen plants were examined from each
F1, both in the seedling and the pot plant stage, for the
presence of pubescence. Pubescence was entirely lacking
on all F1 plants.
From this, we conclude that the character glabrousness,
both in the Russian and American material, depends on the
same recessive gene g1.
Literature Cited
- de Ponti, O.M.B. 1979. Breeding glabrous cucumber
varieties to improve the biological control of the glasshouse
white fly. Cucurbit Genetics Coop. Rpt. 2:5.
- Robinson, R.W. and W. Mishanec. 1964. A radiation induced
seedling marker gene for cucumbers. Veg. Impr. Newsl. 6:2.
- Strelnikova, T.R. and A.K. Mashtakova. 1973. A new,
nonpubescent cucumber form (Russian). Selektsiya i semenovodstvo
ovoshchnykh. Kishinev. 1973:3-6.
