2 research outputs found
Pollen tube dynamics following half- and fully-compatible pollinations in self-compatible almond cultivars
5 pages, 3 tables.Pollen tube growth dynamics along the style
at different times after self- and cross-pollination of four
heterozygous self-compatible (SfSx) almond cultivars
were studied by means of fluorescence microscopy. Results
showed a reduction of pollen tube number along the
style following both self-pollination (half-compatible reaction)
and cross-pollination (fully-compatible). An important
decrease in the percentage of pollen tubes present
took place in the upper section of the style in both
crosses. As expected in a gametophytic incompatibility
system, a higher number of pollen tubes were stopped
along the style in the case of the half-compatible crosses;
however, the percentage of pollen tubes reaching the
base of the style was similar in both cases. These results
reveal the existence of other mechanisms controlling
pollen tube growth along the style.This work has been financed by the project
“Mejora Genética del Almendro” (AGF98-0211-C03-02) from the
“Plan Nacional de I+D” of the Spanish Ministry of Education and
Culture.Peer reviewe