蓍状亚菊与菊属北京夏菊品种‘北金’杂交试验初报

Preliminary Study of Intergeneric Hybridizations Between Ajania achilloides and Day-Neutral Chrysanthemum‘Beijin’

摘要: 通过人工杂交的方法得到了蓍状亚菊Ajania achilloides×夏菊‘北金’Chrysanthemum morifolium ‘Beijin’的杂交种，并得到形态学及细胞学研究证明，形态学以舌状花的出现为主要标志，细胞学采用根尖压片结合流式细胞仪测定技术进行；该试验所得的杂交种在观赏性状上表现出一定的超亲优势，可以作为进一步育种的基础材料.

Abstract: An intergeneric hybridization between Ajania and Chrysanthemum was produced by hand pollination in this study to introduce new germplasm into Chrysanthemum gene pool. One intergeneric hybrid of Ajania achilloides×Chrysanthemum morifolium‘Beijin’ was identified by morphological characteristics comparison and cytological analysis including flow cytometry. The hybrid was identified by the characteristic with ray florets which were quite different from that of maternal parents. It was found that the hybrid was tetraploid while the parents were diploid and hexploid based on cytological studies. The intergeneric hybrid could be used as the bridge for breeding of drought-resistant chrysanthemums.