菊花观赏性状的配合力分析  

Combining Ability Analysis on Ornamental Characters of Chrysanthemum

作　　者：张飞[1] 房伟民[1] 陈发棣[1] 陈素梅[1] 

机构地区：[1]南京农业大学园艺学院,南京210095

出　　处：《园艺学报》2010年第4期589-596,共8页Acta Horticulturae Sinica

基　　金：国家自然科学基金项目(30871724);农业部‘948’滚动项目(2008-G3);江苏省科技成果转化专项(BA2007111);江苏省科技攻关项目(BE2007305)

摘　　要：选用3个切花菊品种为母本,4个盆栽小菊为父本,以3×4不完全双列杂交(NCII)设计衍生的12个家系实生苗为材料,估算了菊花(Dendranthema×grandiflorum)7个观赏性状的配合力和群体遗传参数。结果表明:(1)花径、舌状花数和舌状花长主要由加性基因效应控制,株高和叶长主要由非加性基因效应控制,叶宽和舌状花宽可能由加性和非加性两种基因效应共同控制。(2)‘早意红’在7个观赏性状上均具有正向的一般配合力(GCA)效应,综合表现较好;在培育重瓣性高的品种时,‘Herby’可以作为重要亲本;‘Herby’ב玉满堂’,‘青心红’ב早意红’和‘红雀舌’ב03-11-2’杂交组合在大部分性状上具有正向的特殊配合力(SCA)效应,杂种后代综合表现较好。(3)群体配合力方差及其对杂种贡献率表明,除舌状花宽外,其他6个观赏性状具有不同程度的母本效应;7个观赏性状广义遗传力(h2B)差异较大,其中舌状花宽最小,为59.56%,舌状花数最大,达80.40%;除舌状花数的狭义遗传力(h2N)达到80.40%外,其他6个性状的低于50%,说明舌状花数的遗传稳定性高,早期世代时应增加选择压。The combining ability and genetic parameters were estimated for 7 ornamental characters in F1 progenies of 12 cross combinations of chrysanthemum（Dendranthema × grandiflorum）hybridized by using a 3 × 4 incomplete diallel cross design（NC II）with three cut-chrysanthemum cultivars as female parents and four potted chrysanthemum cultivars as male parents. The results showed that：（1）Flower diameter,ray floret number and ray floret length were controlled mainly by additive gene action,while plant height and leaf length were controlled principally by non-additive gene action. In addition,leaf width and ray floret width might be controlled both by additive and non-additive gene action.（2）‘Zaoyihong’ had a positive general combining ability（GCA）effect for the 7 ornamental characters involved herein, and‘Hereby’could be used as an important parent in hybridization breeding program aiming for preferable double flowers. The three cross combinations,i.e‘.Hereby’בYumantang’,‘Qingxinhong’בZaoyihong’ and‘Hongqueshe’ב03-11-2’,performed quite well special combining ability（SCA）regarding mostof the 7 ornamental characters.（3）Variance of population combining ability and its contribution to hybrid progenies suggested that there was a maternal heredity effect for all the ornamental characters studied except ray floret width. The heritability in broad sense（h2B）of the 7 characters ranged from 59.56%（ray floret width）to 80.40%（ray floret number）. The heritability in narrow sense（h2N）were lower than 50% except ray floret number amounting to 80.40%. These indicating that ray floret number belonged to high heritability characters and selection pressure should be increased for this character in earlier selection.

关 键 词：菊花 配合力 遗传力 不完全双列杂交 观赏性状 

分 类 号：S682.1[农业科学—观赏园艺]