Cultivar classification of tree-and herbaceous peony and creation of interspecific hybrids.

1.为获得牡丹育种的基础数据，对牡丹品种进行了主因子分析和聚类分析。结果表明，主因子与花茎和叶长密切相关。聚类分析表明，一个杂种cv。Gunpouden之间的CV。Hanadaijin和Kamadafuji属于同一集群。种间黄色品种明显不同于其他品种。中国栽培品种名条之家也不同于日本栽培品种。2.对12月上旬下旬的强迫开花进行了研究。4年生大根植株的产量高于2年生小根植株。花在12月下旬是可能的，使用冬季开花的栽培品种低温处理。3.牡丹花色素主要为芍药苷、芍药苷、矢车菊苷、矢车菊苷、天竺葵苷和天竺葵苷。从黄酮类化合物和黄酮类化合物的类型差异上对芍药进行分类是可能的。4.日本品种在5月1 ~ 5日发芽，中国品种在4月下旬发芽。5.日本和中国栽培品种花粉萌发的最适温度为15 ℃.树与牡丹杂交未获得种子。

1. In order to obtain basic data on breding of tree peony, principal factor and cluster analysis were conducted. In result, main factor was closely related with flower stalk and leaf length. Cluster analysis showed that a hybrid cv. Gunpouden between cv. Hanadaijin and Kamadafuji belonged to the same cluster. Interspecific yellow cultivars differed clearly from the other cultivars. Chinese cultivar, Meijonohomare also distinguished from Japanes cultivars. 2. Forced flowering of eary late December was studied. Yield in 4-year-old plants with large roots was higher than that in 2-year-old plants with small roots. Floweing in late December was possible, using winter-blooming cutivar treated with low temperature. 3. Flower pigments in tree and herbaceous peony were peonidin-3-glusoside, peonidin3,5-glucoside, cyanidin-3-glucoside, cyanidin-3,5-glucoside, pelargonidin-3-glucoside and pelargonidin-3,5-glucoside.Flowers with deep color has many kinds of pigments. Clutiver classification of herbaceous peony was possible from difference of patterns in flavone and flavonoid. 4. Sprouting of Japanse cultivars were between May 1 and 5, while that of Chinese cultivars were late April. 5. Optimum temperature of pollen geramination in Japanese and Chinese cultivars 15ﾟC.6. Seeds were not obtained from cross between tree and hearbaceous peony.