Heredity of several flower characters in Dendranthema
2008
Li Xinlei | Chen Fadi | Zhao Hongbo
Chinese. 研究菊属种间杂种部分花器管性状的遗传表现，为远缘杂交育种提供理论依据。对二倍体野生种甘菊、菊花脑和异色菊，四倍体野菊，同源四倍体菊花脑，栽培菊花（六倍体及其非整倍体）及其种间杂种F1代的花器官性状进行调查，并对调查结果进行统计分析。杂种总平均舌状花数目、筒状花数目和花序直径分别相当于亲中值的112.4%、108.0%、118.6%，且从二倍体物种组合到二倍体与四倍体组合再到二倍体、四倍体与栽培菊花组合，平均舌状花数目、筒状花数目和花序直径杂种优势逐渐降低，但二倍体野生种组合的筒状花数目除外。F1代的舌状花数目、筒状花数目和花序直径具杂种优势；栽培菊花比二倍体、四倍体的花色遗传能力强，白色、紫色遗传能力大于黄色；平盘型遗传能力比单窄瓣型强；多瓣型遗传能力比单瓣型强。
Show more [+] Less [-]English. Heredity of several flower characters in Dendranthema was studied, which will provide theoretic foundation for breeding of interspecific cross. Several flower characters of D. lavandulifolium, D. nankingense, D. dichrum, D. indicum, D. morifolium (hexaploid and its aueuploid) and their F1 generation were observed and analyzed. The hybrid’s mean inflorescence diameter, the number of ray florets and tubular florets were 112.4%, 108.0%, 118.6% of their parents, respectively. Except for the number of tubular florets of F1 generation between wild diploid species, the value of these three characters declined when F1 generation came from cross between wild diploid species to between diploids and tetraploids, and to between diploids or tetraploids and polyploid chrysanthemum varieties. The inflorescence diameter, number of ray florets and tubular florets appeared heterosis in F1 generation. Genetic ability of flower color of polyploid chrysanthemum varieties was stronger than diploid and tetraploid. The purple and white color of flowers were stronger than yellow at genetics. The heredity of flat plate shape was stronger than 1-3 cycle plate shaped flower, and double flowers was stronger than 1 cycle flowers.
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