CAJ | 학술논문

在扫描电镜下研究了茄科天仙子族7属及颠茄属、茄参属和枸杞属3属共10属23种植物的花粉形态学特征.结果表明:天仙子族的花粉粒形状为球形、近球形、扁球形和长球形;萌发孔类型有无萌发孔、不规则的拟孔、3沟、4沟、3～4沟、散沟和3孔沟;外壁纹饰为小刺状、瘤状、各式条纹状、条纹-穴状、条纹-网状、皱波状、细网状和网状.沟膜近光滑、具小颗粒、具小刺状突起或具瘤状突起.各属植物的花粉形态在萌发孔的有无、萌发孔的类型和外壁纹饰等方面有较大的差异,可以作为探讨属间分类和系统关系的重要依据.天仙子族植物花粉萌发孔的演化趋势为:无萌发孔→3、4沟→3孔沟.无萌发孔的山莨菪属是原始类群,三孔沟的马尿泡和天仙子等属是进化类群.还讨论了与前人研究结果不同之处和可能的原因.
재소묘전경하연구료가과천선자족7속급전가속、가삼속화구기속3속공10속23충식물적화분형태학특정.결과표명:천선자족적화분립형상위구형、근구형、편구형화장구형;맹발공류형유무맹발공、불규칙적의공、3구、4구、3～4구、산구화3공구;외벽문식위소자상、류상、각식조문상、조문-혈상、조문-망상、추파상、세망상화망상.구막근광활、구소과립、구소자상돌기혹구류상돌기.각속식물적화분형태재맹발공적유무、맹발공적류형화외벽문식등방면유교대적차이,가이작위탐토속간분류화계통관계적중요의거.천선자족식물화분맹발공적연화추세위:무맹발공→3、4구→3공구.무맹발공적산랑탕속시원시류군,삼공구적마뇨포화천선자등속시진화류군.환토론료여전인연구결과불동지처화가능적원인.
Pollen grains of 23 species in seven genera of the tribe Hyoscyameae (Solanaceae) and three related genera (Atropa,Mandragora,Lycium) were investigated under SEM. The pollen grains are globose,subglobose,oblate or prolate in shape. Germination apertures were absent or present and are irregularly poroid,3-colpate,4-colpate,3-or 4-colpate,pantocolpate or 3-colporate. The exine ornamentation was spinulose,tuberculate,variously striate,striate-foveolate,striate-reticulate,rugose-sinuate,minutely reticulate or reticulate. The colpal membrane was nearly smooth but with granular,spinulose or tuberculate protuberances. The pollen grains show great variation between genera in the Hyoscyameae in the presence and type of a germination aperture and exine ornamentation. These may be important characters in revealing phylogenetic relationship in the tribe. The evolutionary trend in germination apertures ranges from absent or presence to 3-or 4-colpate then to 3-colporate. Anisodus,which lacks germination apertures,is considered to be primitive,while genera with 3-colporate pollen grains,such as Przewalskia and Hyoscyamus are believed to be advanced.