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切花菊杂交F1代观赏性状的遗传分析

发表时间:2016-05-15  浏览量:1638  下载量:493
全部作者: 李方圆,杨云燕,温 超,刘美娟,赵梁军
作者单位: 中国农业大学园艺学院,花卉发育与品质调控北京市重点实验室
摘 要: 利用‘神马’、‘深志’、‘优香’等8个切花菊品种为亲本,组配成8对杂交组合,对杂交F1代的花色、花期、花径、舌状花数、筒状花数、花瓣长度、花瓣宽度、花梗长度等8个主要观赏性状进行统计分析。结果表明:F1代花色分离广泛,各花色遗传潜能的大小为:白色>粉色>黄色;F1代花期多集中于亲本之间,但有早花出现;杂种后代花径、舌状花数、筒状花数、花瓣长度、花瓣宽度整体均表现出一定程度的减小,分别占亲中值的95.9%、85.2%、71.5%、76.1%、84.9%;杂种F1代花梗长度与亲本差异明显,表现为遗传衰退。8对杂交组合后代的性状分离广泛,变异系数较高,为以后切花菊杂交育种的亲本选配提供了数据参考。
关 键 词: 园艺学;切花菊;杂交;观赏性状;遗传
Title: Heredity of ornamental characters in F1 hybrid generation of cut-flower chrysanthemums
Author: LI Fangyuan, YANG Yunyan, WEN Chao, LIU Meijuan, ZHAO Liangjun
Organization: Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, College of Hoticulture, China Agricultural University
Abstract: Heredity of some characters in F1 generation by the eight cross combinations among eight varieties of cut-flower chrysanthemums were studied. Eight main ornamental characteristics of the F1 hybrids such as flower color, flowering date, flower diameter, ray floret number, tubular flower number, length of petal, petal width, pedicel length were analyzed. The results show that different flower colors have different genetic potential, and each color of the parents in turn can be ranked as follows: white > pink > yellow; the flower time of F1 hybrids lied between parents, but the early flowering occurs. The mean of hybrid inflorescence diameter, the number of ligulate flower and tubular flower, petal length and width, all showed a trend of decrease and the means of them were 95.9%, 85.2%, 71.5%, 76.1%, 84.9% of their parents, respectively. But heterosis in different cross combinations were not the same, and the performance advantage depended on combinations. The means of hybrid pedicel length had a clear difference from their parents and showed a trend of decrease. According to breeding objectives, having a significant correlation among different ornamental characters could provide data reference of cut-flower chrysanthemums.
Key words: hoticulture; cut-flower chrysanthemums; hybrid; ornamental character; heredity
发表期数: 2016年5月第9期
引用格式: 李方圆,杨云燕,温 超,等. 切花菊杂交F1代观赏性状的遗传分析[J]. 中国科技论文在线精品论文,2016,9(9):916-924.
 
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