| Rice core germplasm breeding systems of theory and breeding materials were created by research team of
Guangdong Academy of Agricultural Sciences in order to realize no-slot joint of rice breeding and rice germplasm resources,
effective integration of conventional breeding techniques and advanced and applicable technology. Ri ce core germ plas m
breeding theoretical systems including the co nception of rice core germplasm s, corresponding hypothesis between ideal
gene system and breakthrough rice variety, creation of ideal model, comprehensive arrangement of foreground selection
and background selection, biological significances of DNA block, phenotypes of rice cor e germ plasms and cloud data of
genotypes, research on rice synthesis breeding by advanced and applicable technologies, heterosis utilization of rice core
germplasms were briefed. The creation of Huanghuazhan, Meixiangzhan and Huazhan core germplasm breeding material
systems were traced back, and both the breakthrough varieties of Huangh uazhan with the largest indica rice promotion area
in China, and Meixiangzhan No. 2 with the most excellent eating qua lity in China, the br eakthrough restorer line of Huazhan
with the most excellent combining abilit y in rice breeding history, which deri ved from the core germplasm breeding material systems were introduced. The present situation and direction of rice genetics and breeding were discussed. |
