Comparison of Micro-morphological Characteristics of Four Triticeae Species in Gramineae  

4种禾本科小麦族植物微观形貌特征的比较(英文)

作　　者：张燕[1] 林小虎[1] 周印富[1] 秦素平[1] 张珊珊[1] 王秋涛[2] 

机构地区：[1]河北科技师范学院,河北秦皇岛066004 [2]河北省保定职业技术学院,河北保定071000

出　　处：《Agricultural Science & Technology》2008年第6期97-101,共5页农业科学与技术（英文版）

基　　金：Supported by Key Projects in the National Science&Technology Pillar Program in the Eleventh Five-year Plan Period(2006BAD02A08-9);the Science and Technology Research and Development Program of Hebei Province(06230105);Program of Science and Technology from Education Department of Hebei Province(2006425);the Science and Technology Re-search and Development Program of Tangshan City(08120201A-8)~~

摘　　要：[Objective] This study was to investigate the difference in microscopic features of pollen grain and stoma of four triticeae species, as well as the relationship between the sizes of pollen grain and stoma, and the chromosome ploidy. [Method] Comparison of the micro-morphological characteristics of pollen grain and leaf epiderm among diaploid Thinopyrum elongatum, Elytrigia intermedia, hexaploid Triticum aestivum and octoploid Tritielytrigia types were carried out by observation under scanning electronic microscope(SEM). [Result] There were some differences among the four species in the micro-morphology, the size, the surface protuberance, the germ pore of pollen grain and the leaf epidermal stoma, in which diploid Thinopyrum elongatum was obviously different from the other three. Diploid, hexaploid and octoploid species of triticeae had remarkable differences in micro-morphological characteristics of pollen grain and stoma. However, some differences between hexaploid species and octoploid species were not significant. [Conclusion] Some microscopic characteristics of pollen grain and stoma could be used as the evidence to identify diaploid, hexaploid and octoploid spieces whose chromosome ploidy are hugely different.[Objective] This study was to investigate the difference in microscopic features of pollen grain and stoma of four triticeae species, as well as the relationship between the sizes of pollen grain and stoma, and the chromosome ploidy. [Method] Comparison of the micro-morphological characteristics of pollen grain and leaf epiderm among diaploid Thinopyrum elongatum, Elytrigia intermedia, hexaploid Triticum aestivum and octoploid Tritielytrigia types were carried out by observation under scanning electronic microscope(SEM). [Result] There were some differences among the four species in the micro-morphology, the size, the surface protuberance, the germ pore of pollen grain and the leaf epidermal stoma, in which diploid Thinopyrum elongatum was obviously different from the other three. Diploid, hexaploid and octoploid species of triticeae had remarkable differences in micro-morphological characteristics of pollen grain and stoma. However, some differences between hexaploid species and octoploid species were not significant. [Conclusion] Some microscopic characteristics of pollen grain and stoma could be used as the evidence to identify diaploid, hexaploid and octoploid spieces whose chromosome ploidy are hugely different.

关 键 词：TRITICEAE MICROSCOPIC characteristics SCANNING electronic MICROSCOPE (SEM) 

分 类 号：S512.1[农业科学—作物学]