超早熟大豆北疆1号的选育技术研究

通过对大豆优良品种"北疆1号"的选育,作者认为:在大豆超早熟育种的亲本选配上,应选择双亲生育日数差值小、花期短、鼓粒快、株体繁茂、中日性、耐低温的极早熟种质资源作为杂交亲本.以极早熟、丰产、抗病品种间杂交为最佳组合,通过有性杂交获得早熟性基因累加超亲遗传后代,进而创造出更早熟的杂交后代材料,于F2和F3世代,以早熟、抗病性为主进行选择,严格淘汰晚熟、感病单株.F4世代以丰产性状选择为主,从早熟、抗病后代的优良株系中大量选拔丰产性状优异的单株,混合成品系,下年进行品系鉴定.由于大豆生态适应区域明显,为此,充分结合当地生态条件进行选育更易获得成功.

BREEDING ON SHORT MATURATION SOYBEAN VARIETY BEIJANSL

Thorough breeding short maturation soybean variety, Beijiang 1, the author thinksthat soybean germplasms with the characters of small growing period difference of both parents, short flowering period, rapid seed filling, luxuriant canopy of plant dayneutral, and cold resistance showld te used as parents. The short maturation and disease resistance plants showld be mainly selected, the late maturing, and disease sensitive plants should be strictly discarded in F2 and F3 generation. The high yield plants should be mainly selected and be mixed into line in F4 generation, next year, then the line was advanced into pretiminary test.