种植密度对棉花分离世代产量性状表现及育种选择的影响  

The Effects of Plant Density on Yield Traits and Breeding Selection for Cotton Segregation Population

作　　者：张桂寅[1] 马峙英[1] 刘占国[1] 吴立强[1] 

机构地区：[1]河北农业大学,保定071001

出　　处：《棉花学报》2001年第1期26-29,共4页Cotton Science

基　　金：河北省重大科技攻关项目!(95-98-03-01)

摘　　要：通过裂区设计对Ｆ２代４个群体在三种密度下表现进行了研究，子棉产量、皮棉产量在不同密度、不同群体间存在显著差异；Ｆ２代群体与密度间存在互作，不同群体要求的适宜密度不同。Ｆ２代群体间单株结铃数差异显著，单株结铃数在不同密度差异显著，随密度增加单株结铃数减少，但小区总结铃数呈增加趋势；密度与群体间存在互作，密度的大小对４个Ｆ２群体的单株结铃数影响程度不同。Ｆ２代４个群体间衣分差异显著，但单铃重、衣分在不同密度下差异不显著，且互作不显著。种植密度对不同群体的育种选择具有较大影响。The experiment was conducted with the split plot lot design to study the effects of density on yield and yield factors of F2 population. The variance of the effects of plant density (d) was significant for seed cotton yield (sd), lint yield(ld) and number of boil per plant(bn), while variance of 4 F2 population were significant on yield and yield factors. The variance of d × sd,d × 1d and d × bn were also significant. A F2 population had the special density for the best growth condition. The number of boil per plant was distinct difference among different plant density. The number of boil per plant decreased as plant density increased, but the total numbers of boil of plot increased as plant density increased. It was prominent for the effects of plant density on breeding of cotton segregation population.

关 键 词：棉花 产量 产量构成因素 种植密度 选育 

分 类 号：S562.033[农业科学—作物学]