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以江苏省首次由美国引种的6个豆梨(Pyrus calleryana)品种为试材,对各品种的花苞、观花期、花色等花期特征进行了调查。结果表明:结果豆梨1年生品种苗定植2年后均已大量开花,‘Autumn Blaze’和‘Glen’s Form’品种属花叶同放型,其余4个品种为先花后叶型;各品种花苞均为玫红色,花瓣均为白色,始花时边缘均带粉色;各品种均为伞形花序,花基数为5,花单瓣,直立;豆梨品种在现苞期、花苞大小、开花时间、观花时间、花直径、花梗长度等方面表现出差异,‘Fauriei’始花期较早,‘Jaczam’花苞直径较大,可达0.8cm;‘Redspire’花直径和花梗长度最大;各品种观花期均超过15d,其中‘Bradford’观花期超过20d;豆梨各品种所表现出的花期特征差异是被选择应用的重要依据,结合各品种秋季色叶期和树形的区别以及各品种生长特点和适应性等方面的差异,将为豆梨品种在江苏省内的推广应用提供基础资料。
Six species of Pyrus calleryana, introduced for the first time in Jiangsu Province, were used as materials to investigate the flower buds, flowering stage and flower color of each variety. The results showed that the results showed that peanut perennial seedlings planted 2 years after a large number of blooms, ’Autumn Blaze’ and ’Glen’s Form’ varieties belong to the same type of mosaic, the remaining four varieties for the first flower-type; variety bud All are rose red, the petals are white, the beginning of the flowers are pink when the edge; all varieties are umbels, flower base number of 5, flower single flap, upright; pear varieties in the bud, bud size, flowering time , Flower length, flower length and pedicel length. Fauriei flowering started earlier, ’Jaczam’ bud diameter was larger, up to 0.8cm, ’Redspire’ flower diameter and pedicel length was the largest. The flowering period was more than 15 days, and the flowering period of ’Bradford’ was more than 20 days. The differences of the flowering characteristics of various varieties of pears and pears were the important basis for selection and application. Combining the differences of autumn leaf color and tree shape, Growth characteristics and adaptability differences will provide the basic information for the popularization and application of bean varieties in Jiangsu Province.