林木种子园生殖系统研究进展

本文对种子园生殖系统中亲本开花物候、配子产量、球果和种子败育、授粉机制、球花分布对种子园遗传效率的影响及其研究进展作了综述。论述了开花物候、球花产量与配子贡献以及种子园生殖系统遗传效率的关系。不同亲本开花物候及授粉机制的差异限制了亲本之间的基因交流 ,雌雄球花产量、球果败育及其雌雄球花空间分布的差异都会引起亲本配子贡献的变化 ,并最终影响种子园生殖系统的遗传效率。为提高种子园种子的遗传品质和遗传多样性 ,更系统深入地研究种子园生殖系统是必要的

PROGRESS ON REPRODUCTIVE SYSTEM OF FOREST SEED ORCHARDS

This paper reviewed the research progress on reproductive system of seed orchard and effect of flowering phenology, gamete production, cone and seed abortion, pollination mechanism and flowering distribution on genetic composition of seeds, discussed the relation among flowering phenology, cone production and gamete contribution. The differences of flowering phenology and polination mechanism for different parents limited gene communication between parents, the differences of cone production, abortion and spatial distribution resulted in change of gamete quantities from different parents, the both affected the genetic efficiency of reproductive system on seed orchard. The systematic and further researches must be conducted on reproductive system in order to increase the genetic quality and diversity of seeds on seed orchard.