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作 者 ：吉利;赵兴峰;孙卫邦

期 刊 ：武汉植物学研究 2009年 27卷 1期 页码：12-18

关键词：亲本及子代；杂交含笑；叶表皮微形态；叶解剖；矮化型植株；

Keywords:Parents and hybrids, Michelia, Epidermal micromorphology, Leaf anatomy, Dwarf hybrid,

摘 要 ：通过比较观察紫花含笑(♀)和灰岩含笑(♂)及其杂种F₁代叶表皮微形态和叶结构发现,紫花含笑和灰岩含笑在叶表皮微形态及叶解剖结构方面有很大差异。杂种F₁代个体间在叶表皮微形态及叶解剖结构方面变异很大,为连续的数量遗传;其中57.7%以上的杂种F₁代气孔密度高于父母本。杂种F₁代矮化型植株叶片气孔密度较小,推测其抗寒性较强,可以通过进一步杂交改良,获得矮化型的盆栽含笑新品种。观察结果可为深入探讨含笑属种间杂种F₁代的遗传变异,并从这些杂种F₁代中选育观赏新品种积累科学资料。

Abstract:In order to know better about the hereditary and variation of the F₁ hybrid,and provide data to the new ornamental selected from the F₁ hybrids,we study the leaf anatomy and epidermal micromorphology of Michelia crassipes(♀),M.calcicola(♂) and their F₁ hybrids.The parents are very different from each other in the two aspects.The phenotype of the F₁ hybrid shows continuous variation.Fifty-seven point seven percent of the hybrids have higher stoma density than the parents.The dwarf F₁ hybrids have lower stoma density which maybe means good cold resistance.The dwarf F₁ hybrids can be used as materials for the beautiful dwarf cultivars or the more cold resistant ones.

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