our conditions to use the positional sterility controlled by the ps-2 allele. Maintenance of a ps-2 line is
very easy by self-pollination.
The experiment was conducted in the open field in 1977. The flowers of 10 plants of a ps-2 c
(potato leaf) line bred in Montfavet were emasculated on June 15th and 22nd, and on July 1st.
Petals and stamens of flowers in full bloom were removed by hand. Pollination with c4 pollen was
done immediately after emasculation. The fruits were harvested and the seeds extracted fruit by
fruit and sowed so that the percentage of c seedlings originating from selfing of the female line
could be determined.
13 fruits, that is to say 10.7% of harvested fruits, contained seeds from which we obtained at
least one c seedling. The proportion of c+ and c seedlings for each of the 13 fruits is given in the
Table 2.
No navigation control above? Click here!
