三个美国紫薇品种在川中丘陵区的花期观测与花粉萌发特性比较Comparison of Flowering Period Observation and Pollen Germination Characteristics of Three American Lagerstroemia indica Varieties in the Hilly Area of Central Sichuan Province
陈晓梅,李小林,丁婷,赵桃娟,陈炙,黄振
CHEN Xiaomei,LI Xiaolin,DING Ting,ZHAO Taojuan,CHEN Zhi,HUANG Zhen
摘要(Abstract)：
通过对川中丘陵区引种的三个美国紫薇品种（Red Rocket、E. Ember、Delta Blush）进行花期观测与及其花粉萌发能力比较。结果表明：3种紫薇均在7月底或8月上旬进入开花期，花期可遇，花期少于原引种地——湖南；3个品种的长/短花丝花药中的花粉粒均能正常萌发，长花丝花药中的花粉粒萌发率更高，因此，两类花药均可为杂交供花粉；3个品种均可自交和异交，自交时，花粉管和精细胞12 h可进入子房，异交时，花粉管则需要14～18 h，相关研究为下一步的杂交试验的开展奠定了基础。
In this paper, the flowering period of three American Lagerstroemia indica varieties( Red Rocket, E.Ember, Delta Blush) introduced in the hilly area of central Sichuan was observed and their pollen germination ability was compared. The results showed that all three American Lagerstroemia indica species entered the flowering period at the end of July or the beginning of August, and the flowering period could be met. The flowering period was shorter than that in Hunan province, the original introduction place. All the pollen grains in the long/short capillament anthers of the three varieties could germinate normally, and the germination rate of pollen grains in long-capillament anthers was higher. Therefore, both types of anthers could be used as hybrids to provide pollens. All three varieties could be self-cross and outcross. When self-cross, pollen tubes and sperm cells could enter the ovary for 12 hours, while when outcross, it need 14 to 18 hours. The related research laid the foundation for the development of the next hybridization experiment.
关键词(KeyWords)：
美国紫薇;花期;花粉;花粉管;柱头
American Lagerstroemia indica;Flowering period;Pollen;Pollen tube;Stigma
基金项目(Foundation): 四川省省财政专项项目（2021CZZX15）
作者(Author):
陈晓梅,李小林,丁婷,赵桃娟,陈炙,黄振
CHEN Xiaomei,LI Xiaolin,DING Ting,ZHAO Taojuan,CHEN Zhi,HUANG Zhen
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