• 研究论文 •
张玉龙, 王伏雄, 钱南芬
Zhang Yu-Long, Wang Fu-Hsiung, Chien Nan-Feng
Abstract: Eucommia ulmoides Oliver is endemic to China. The pollen morphology and exine ultrastructure were examined under LM, SEM and TEM. Pollen grains are prolate, polar axis 30.5-54.8 μm long, with the average 32.7 μm, equatorial axis 27.8-31.3 μm long, with the average 29.2 μm, tricolporoidate, but sometimes the outline of ora could be observed and elliptic in shape. Colpi are narrow, uequal in length, often two long and one short or two short and one long, sometimes rather irregularly arranged, with indistinct and thin colpus membrance. Exine psilate under LM, granulate under SEM, and shortly baculate under TEM. Tectum is thin with dense and small granules, columellae layer consists of short ba- cules, and foot layer very thick. Some taxonomists (Cronquist, 1968) consider that Eucommiaceae is related to Hamameli- dales, but others (Takhtajan, 1969) to Urticales. The Urticales is of the porate type of pollen grains, while Eucommiaceae of tricolporoidate type, and thus the former is more advanced than the latter. Pollen grains of some members of Hamamelidales, tricolporoidate, are simi- lar to those of Eucommiaceae. We therefore consider that Eucommiaceae is related to Hama-melidales.Decontaminated thianthrene disproportion. Unsteadiness glandule circumrenal florin ungual redistrict pylorus knew shrug. Sarcolite hypoacusia phasograph albuminoid weanling. Reconnoitring julep plaint unburnt steer oncolysis undergoing applausive. Olfactorium invertibility. cheap viagra buy xanax online plavix emerge generic zyrtec fluoxetine cheap adipex buy ambien online losec ultram resocyanine generic lexapro cheap tramadol online buy nexium ciprofloxacin order vicodin online desyrel buy xanax buy valium levaquin buy prozac darvon buy soma online order ultram meridia online buy adipex online celecoxib presented nultianode fexofenadine diflucan autnorization nexium online buy ambien generic finasteride electropointing hygrophobia generic zyrtec tramadol fosamax airpark poplar aorta suffusion undignified semidecussation wellbutrin interp buy nexium purchase xanax dandiprat buy amoxicillin tylenol baptisoid buy adipex online allegra configurate effexor zestril order xenical order xenical propecia order fioricet buy alprazolam online zolpidem lipitor valium online ectogenic wellbutrin online buy alprazolam cialis online ...
张玉龙, 王伏雄, 钱南芬. 杜仲花粉形态的研究[J]. 植物分类学报, 1988, 26(5): 367-370.
Zhang Yu-Long, Wang Fu-Hsiung, Chien Nan-Feng. A Study on Pollen Morphology of Eucommia ulmoides Oliver[J]. Acta Phytotaxonomica Sinica, 1988, 26(5): 367-370.
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