Abstract:

The effects of successive inbreeding progenies of Brassica napus L.on the embryo development were studied in comparison with the open-pollinated population and hybrids from inbred lines.5 days after polli-nation,the embryo and endosperm development in self-pollinat ed pro-genies began to fall behind crosspollinated treatment,causing smallerseeds and lower oil content in the self-pollinated ones.In contrast withopen-pollinated ones,there was a delayed growth of pollen tube,a laterfertilization,fewer free-nuc...