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nutlet micromorphology of the genus marrubium l. and allies and its systematic implication (lamiaceae: tribe marrubieae)
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نویسنده
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siadati soudeh ,saeidi mehrvarz shahryar ,salmaki yasaman
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منبع
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يافته هاي نوين در علوم زيستي - 2019 - دوره : 6 - شماره : 3 - صفحه:338 -346
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چکیده
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Nutlets of 20 taxa of the tribe marrubieae were examined by scanning electron microscopy (sem) and detailed descriptions of nutlet micromorphological features for all examined taxa are provided. the nutlets exhibited variation in size, shape, color and surface sculpturing. the nutlets shape of most species studied is ovate, but rounded, broad ovate, elliptic, lanceolate, triangular and oblong can also be found in a few species. six basic types of the sculpturing pattern of nutlet surface can be distinguished: reticulate, foveolate, scalariform, ruminate, pusticulate and colliculategranulate. the most common type of nutlet sculpturing among the studied species is reticulate, but the variation in size and shape of their composing cells provided useful diagnostic characters. our investigation revealed that the type of sculpturing was more useful in taxon delimitation among marrubium species and allies at the species rank.
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کلیدواژه
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diagnostic characters ,labiatae ,surface sculpturing ,scanning electron microscopy ,taxonomy
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آدرس
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university of guilan, faculty of science, department of biology, iran, university of guilan, faculty of science, department of biology, iran, university of tehran, school of biology, college of science, center of excellence in phylogeny of living organisms and department of plant science, iran
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پست الکترونیکی
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ysalmaki@ut.ac.ir
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Nutlet micromorphology of the genus Marrubium L. and allies and its systematic implication (Lamiaceae: tribe Marrubieae)
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Authors
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Siadati Soudeh ,Saeidi Mehrvarz Shahryar ,Salmaki Yasaman
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Abstract
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Nutlets of 20 taxa of the tribe Marrubieae were examined by scanning electron microscopy (SEM) and detailed descriptions of nutlet micromorphological features for all examined taxa are provided. The nutlets exhibited variation in size, shape, color and surface sculpturing. The nutlets shape of most species studied is ovate, but rounded, broad ovate, elliptic, lanceolate, triangular and oblong can also be found in a few species. Six basic types of the sculpturing pattern of nutlet surface can be distinguished: reticulate, foveolate, scalariform, ruminate, pusticulate and colliculategranulate. The most common type of nutlet sculpturing among the studied species is reticulate, but the variation in size and shape of their composing cells provided useful diagnostic characters. Our investigation revealed that the type of sculpturing was more useful in taxon delimitation among Marrubium species and allies at the species rank.
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Keywords
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diagnostic characters ,Labiatae ,surface sculpturing ,scanning electron microscopy ,taxonomy
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