A preliminary study of pollination biology of Pedicularis (Scrophulariaceae) in Northwest Yunnan, China

	A preliminary study of pollination biology of Pedicularis (Scrophulariaceae) in Northwest Yunnan, China
	Wang, H; Li, DZ
	1998
发表期刊	ACTA BOTANICA SINICA
ISSN	0577-7496
卷号	40 期号:3 页码:204-+
摘要	The pollination biology of Pedicularis L. was studied in the Zhongdian and Deqin counties of Northwest Yunnan in the summer of 1993. From late July to late August, 18 species of Pedicularis were found in full bloom, while P. integrifolia was almost out of bloom. A preliminary study of pollination biology of six species was conducted. The paper reports the results of four better-studied species, among which P. tsekouensis Bonati and P. roylei Maxim. are of short-tubed, erostrate and nectarless corolla type and P. longiflora var, tubiformis (Klotz.) Tsoong and P. siphonantha var. delavayi (Franch.) Tsoong are long-tubed, rostrate and nectarless. The short-tubed P. tsekouensis and P. roylei were found exclusively by Bombus friseanus workers standing on the lower lips of the corolla and vibrating pollen from anthers concealed within the galea. The pollen deposited on the dorsal side of the head-thorax of the workers was transferred to the stigma of another plant by the insects nototribically. The long-tubed species were pollinated by Bomus rufofasciatus workers hanging inverted from the corolla and buzzing pollen, the stigma contacted pollen on the ventral side of the pollinator's thorax. This falls into the sternotribical pollination type. The blooming phenology of later-summer Pedicularis seems corresponding to the emergence of short-tongued bumblebee workers rather than longer tongue queens. Preliminary observations were made to check whether Leptopteran insects were the pollinators of the very long-tubed species but no such phenomenon was found. The long-tubes of the yellow flowered P. longiflora var. tubiformis and those of the magentha flowered P. siphonantha var. delavayi may be just an adaptation in extending the rostrate vibration pollination mechanism beyond the relatively short plants. This seems a result of coevolution of these alpine plants and their pollinating bumblebees.
关键词	Pedicularis Bombus Pollination Mechanism
学科领域	Biochemistry & Molecular Biology ; Plant Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000073932500003
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/3227
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
推荐引用方式 GB/T 7714	Wang, H,Li, DZ. A preliminary study of pollination biology of Pedicularis (Scrophulariaceae) in Northwest Yunnan, China[J]. ACTA BOTANICA SINICA,1998,40(3):204-+.
APA	Wang, H,&Li, DZ.(1998).A preliminary study of pollination biology of Pedicularis (Scrophulariaceae) in Northwest Yunnan, China.ACTA BOTANICA SINICA,40(3),204-+.
MLA	Wang, H,et al."A preliminary study of pollination biology of Pedicularis (Scrophulariaceae) in Northwest Yunnan, China".ACTA BOTANICA SINICA 40.3(1998):204-+.

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