[Embryological observation on the wide cross of rice and maize].
In this report, we studied the fertilization and embryo development of a cross between rice and maize. The results showed that the pollen grains of maize could enter into the tissue of style of rice, and reached the embryo sac and released the sperms. Maize sperm might fuse with rice egg or polar nucleus and formed zygote or primary endosperm. But the embryo and endosperm could not be developed normally, and thus the underdeveloped hybrid seeds were formed. The reason was probably that the parental genomes could not coordinate well. This work provided a clue to solve the crossing obstacles between different species.
Xue
Jing Jing
JJ
Rice Research Institute of Sichuan Agricultural University, Wenjiang Sichuan 611130.
Wu
Shao Hua
SH
Xu
Pei Zhou
PZ
Zhang
Hong Yu
HY
Wu
Xian Jun
XJ
D002678:Chimera / Q000196:embryology* / Q000235:genetics*; D006824:Hybridization, Genetic / Q000235:genetics*; D012275:Oryza / Q000235:genetics*; D003313:Zea mays / Q000235:genetics*