甘蔗常用亲本始花期及其遗传研究  

Initial Flowering Time and Its Heritability of the Commonly-used Sugarcane Parents in Hainan Sugarcane Breeding Station

作　　者：黄锦福[1] 邓海华[2] 

机构地区：[1]广州甘蔗糖业研究所海南甘蔗育种场,海南572025 [2]广州甘蔗糖业研究所,广州510316

出　　处：《甘蔗糖业》2004年第4期6-10,18,共6页Sugarcane and Canesugar

摘　　要：分析了海南甘蔗育种场71份常用甘蔗亲本连续5年始花期调查资料。结果表明,亲本的始花期属遗传力较高的性状,广义遗传力达0.7123。亲本的始花期年际间差异在4～55天之间,平均为17天,约75％的品系在20天内,超过30天的仅占8.4％。在杂交季中有必要根据亲本花期变化的实际情况对当年的杂交计划作适当的调整。杂种后代的花期可同时出现双亲的中间型、偏单亲型和超亲型。两个早花亲本杂交的后代,通常早花个体的数量较多。Investigation and analysis on the initial flowering time of 71 sugarcane parents in common use were conducted for five years running at Hainan Sugarcane Breeding Station. The broad sense heritability of initial time of flowering was estimated to be 0.7123. The deviations of flowering dates of the clones among years ranged from 4 to 55 days, with an average of 17days. About 75% of the clones had a range of within 20 days and 8.4% more than 30 days. It is necessary to modify the crossing plans according to flowering status of the parents during the ongoing crossing season. Flowering dates of the hybrids might be that of mid-parent, close to, or earlier than, or later than that of either parent. In general, progeny population from the cross of two early flowering parents would produce more early flowering individuals.

关 键 词：甘蔗 亲本始花期 遗传性能 杂交 品种培育 

分 类 号：S566.1[农业科学—作物学]