Research advance in spring ephemerals
【Abstract】 Spring ephemerals are termed to those herbs which grow in understory of deciduous forest and mixed broadleaf-conifer forest who take advantage of the high light of early spring. Sprouting and blooming just after snow melt, their seeds soon become ripe and can be dispersed successfully in early summer before the canopy’s closure. Most of them are confined to East Asia and North America. They share some interesting and special ecological characters in the tolerance of chilling. the reproductive strategies. and in photosynthesis and respiration. The studies on them in floristic analysis, reproductive ecology, and physiological ecology were reviewed and the genera of the spring ephemerals in the north temperate zone and their distribution were summarized in this paper. The ability of sprouting and growing at low temperature make it possible that their genes became a resourceful pool of chilling resistance which can be exploited for gene engineering to increase the chilling resistance of certain crops.
- 【文献出处】 东北农业大学学报 ,Journal of Northeast Agricultural University , 编辑部邮箱 ,2009年06期