文章题目菊科植物的种皮结构。II(Helianthae部落)

IF 0.4 Q4 PLANT SCIENCES
E. V. Boyko, E. Novozhilova
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引用次数: 0

摘要

本文研究了菊科菊科菊科菊科10个亚族31属(Acmella、Ambrosia、Aspilia、Balsamorhiza、Blainvillea、Borrichia、Chrysogonum、Clibadium、Delilia、Echinacea、Eclipta、Engelmannia、Helianthella、Helianthus、Heliomeris、Heliopsis、Iva、Lindheimera、Parthenium、Ratibida、Rudbeckia、Sanvitalia、Silphium、Sphagneticola、Synedrella、Synedrellopsis、Tithonia、Verbesina、Xanthium、Zaluzania、Zinnia) 52种的种皮结构。利用扫描电镜对其种皮结构进行了研究。已经确定,这个部落的物种有一个明显的雕刻或光滑的,发育良好的皮,直到瘦果完全成熟。在大多数物种中,种子表面的雕刻是由外植体细胞决定的。根据细胞壁增厚的程度和类型,揭示了外泌体细胞结构的几种类型和亚型。组成部落的物种种子表面的雕刻是多种多样的。在属和亚族中,外壁细胞增厚的形状和规格各不相同,因此无法确定整个Heliantheae族及其亚族和属的固有特征。我们的研究结果并不支持将太阳神科部落划分为亚部落的观点。睾丸细胞结构特征的保守性使其可以用于解决属的分类、系统发育问题,以确定太阳花科属和亚族统一的分类群的同质程度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Structure of the seed coat of the species of Asteraceae. II (tribe Heliantheae)
We present the study of the structure of the seed coat of 52 species from 31 genera (Acmella, Ambrosia, Aspilia, Balsamorhiza, Blainvillea, Borrichia, Chrysogonum, Clibadium, Delilia, Echinacea, Eclipta, Engelmannia, Helianthella, Helianthus, Heliomeris, Heliopsis, Iva, Lindheimera, Parthenium, Ratibida, Rudbeckia, Sanvitalia, Silphium, Sphagneticola, Synedrella, Synedrellopsis, Tithonia, Verbesina, Xanthium, Zaluzania, Zinnia) of ten subtribes of the tribe Heliantheae of the Asteraceae family. The study of the seed coat structure was carried out by scanning electron microscopy. It has been established that the species of the tribe have a distinctly sculptured or smooth, well-developed testa, which remains until the full maturity of the achenes. The sculpture of the seed surface in most species is determined by the exotesta cells. The several types and subtypes of the structure of exotesta cells due to the degree and type thickening of cell walls were revealed. The sculpture of the surface of the seeds of the species that make up the tribe is diverse. The shape and specifications of the thickening of the walls of the exotesta cells within the genus and subtribe are diverse, as a result, it is not possible to identify the characters inherent in the entire Heliantheae tribe, as well as its subtribes and genera. The division of the Heliantheae tribe into subtribes is not supported by the results of our study. The conservative nature of the characters of the testa cells structure allows to use them in solving problems of taxonomy of genera, phylogenetics, to establish the degree of homogeneity of taxa united in genera and subtribes of the Heliantheae tribe.
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来源期刊
Turczaninowia
Turczaninowia PLANT SCIENCES-
CiteScore
1.00
自引率
60.00%
发文量
57
审稿时长
12 weeks
期刊介绍: Subject-themed field of “Turczaninowia” is systematics and phylogeny of plants, study of plant diversity, florogenesis, anatomy and morphology of plants. The journal “Turczaninowia” has the following sections: Systematic reviews and new taxa; Floristic findings; Phylogenetics and chromosome numbers; History of flora; Criticism and Bibliography; Research methods; Geobotany and vegetation; Biotechnology; Anatomy and morphology.
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