【摘要】 甜荞是异花授粉作物,温度、水分、光照、花粉活力、传媒、抗倒伏性、花簇数量、花型比率是决定甜荞产量的综合因素。与其他作物相比,甜荞产量很低。在世界范围内,甜荞的改良和育种已经开展很久,但进展缓慢,主要原因是甜荞的异花授粉特点和出现的变异有限所致。近百年来,甜荞研究工作者始终围绕大粒甜荞品种选育,四倍体甜荞品种选育,变异株系选育,早熟、矮化甜荞品种选育开展工作。近20年来,种间杂交和自交结实甜荞品种的创制成功以及基因工程技术的应用,为甜荞育种开辟了新的方向。更多还原

【Abstract】 Common buckwheat is self-incomptiablility crop.The synthetical factors affecting its yield are temperature,moisture,day light,pollen vitality,pollination medium,lodging resistance,number of flower cluster and flower type ratio etc.Compared with other crops,its yield is still low.Buckwheat improvement and breeding have been started for a very long time,but the progress has been slow.Some scholars believe the reason is due to its out-crossing nature and limited variation appearance.For over one hundred years,the buckwheat research have been consistently focused on large seeds breeding,tetrploid buckwheat breeding,mutational characteristics screening,early ripening and dwarf breeding.The inter specific crosses and slef-pollination crosses have not started untill recent 20 years,which begins a newera of the buckwheat breeding.更多还原