Does late-acting self-incompatibility (LSI) show family clustering?: Two more species of bignoniaceae with LSI:: Dolichandra cynanchoides and Tabebuia nodosa
Does late-acting self-incompatibility (LSI) show family clustering?: Two more species of bignoniaceae with LSI:: Dolichandra cynanchoides and Tabebuia nodosa
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DOI：
10.1006/anbo.1999.0933
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发表时间：
1999-10-01
期刊：
影响因子：
4.2
通讯作者：
Bianchi, MB
中科院分区：
文献类型：
--
作者：
Gibbs, PE;Bianchi, MB
通过人工授粉和荧光显微镜观察，研究了阿根廷东北部查科林区两种大果栎科植物--白首乌Dolichandra cynanchoides和瘤叶大果Tabebuia nodosa的繁殖系统和花粉管生长。这两个种在4-8 d内使所有自交雌蕊完全败育，但自花花粉管成功地长到子房并穿透许多胚珠。因此，这两个物种都表现出“迟效自交不亲和”（LSI）或“卵巢不育”（OS）类型的控制自交。LSI-OS已在紫藤科的17种植物中被报道，并且还聚集在诸如木棉科-梧桐科、豆科和桃金娘科的科中。这种家庭集群的影响进行了讨论，关于目前的假设LSI-OS现象的行动。(C)1999年《植物学年鉴》（Annals of Botany Company）
By means of hand pollination experiments and fluorescence microscopy the breeding systems and pollen tube growth were studied in Dolichandra cynanchoides and Tabebuia nodosa, two bignoniaceous species of the Chaco woodland of NE Argentina. Both species abscised all selfed pistils within 4-8 d although self pollen tubes grew successfully to the ovary and penetrated many ovules. Both species therefore show 'late-acting self-incompatibility' (LSI) or 'ovarian sterility' (OS) type control of selfing. LSI-OS has been reported in 17 species of the Bignoniaceae, and is also clustered in families such as the Bombacaceae-Sterculiaceae, Fabaceae and Myrtaceae. The implications of such family clustering are discussed, with regard to current hypotheses for the action of LSI-OS phenomena. (C) 1999 Annals of Botany Company.