刘伟;李桂祥;董晓民;李勃;韩真;张安宁;

• 1:山东省果树研究所

摘要(Abstract)：

【目的】明确肥城桃花粉粒形态特征及品种间的亲缘关系,为确定肥城桃的演化关系提供孢粉学证据。【方法】以肥城桃9个主栽品种及‘中华寿桃’的花粉为试材,采用HITACHIE-1010型扫描电镜观察花粉的形态结构。【结果】供试品种花粉粒极轴长介于31.22³4.87μm,花粉均为近扁球形,等极,辐射对称,极面为三角形,三边略成弧形,赤面均为椭圆形,肥城桃花粉属N3P4C5类型,花粉外壁纹饰均为杂乱走向的条纹状纹饰,条纹间有穿孔,为复合纹饰,各品种间纹饰的形态存在差异。聚类分析结果显示,肥城桃与‘中华寿桃’亲缘关系较远,主栽肥城桃品种‘红里肥桃’‘白里肥桃’为一类,其余肥城桃为另一类。【结论】主栽肥城桃品种演化顺序符合花粉由大到小、表面纹饰及覆盖层穿孔由简单向复杂的一般演化规律,推测供试品种的演化顺序为:‘白里肥桃’最为原始,其次为‘红里肥桃’,其他品种为群体内较为进化的类型,其中‘肥桃2号’‘肥桃3号’‘柳叶肥桃’3个品种亲缘关系较近,‘早熟肥桃’和‘刘台肥桃1号’亲缘关系较近。

关键词(KeyWords)： 肥城桃;花粉形态;扫描电镜;亲缘关系

Abstract:

Keywords:

基金项目(Foundation): 山东省农业科学院青年科研基金(2014QNM52);; 山东省名优稀果品高档化与标准化生产关键技术研究(2014CXZ04);; 国家桃产业技术体系泰安综合试验站(CARS-31-Z-09)

作者(Authors): 刘伟;李桂祥;董晓民;李勃;韩真;张安宁;

DOI: 10.13925/j.cnki.gsxb.20160186

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