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Morphological and anatomical aspects of birdsfoot trefoil and big trefoil
This study was carried out with the objective of describing the aerial and underground organs of birdsfoot trefoil [Lotus corniculatus (São Gabriel and ARS-2620 cultivars)] and big trefoil [Lotus uliginosus (Maku cultivar)]. The plants were cultivated in pots and harvested at 150 and 210 days after...
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Published in: | Revista brasileira de zootecnia 2009-09, Vol.38 (9), p.1663-1667 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | This study was carried out with the objective of describing the aerial and underground organs of birdsfoot trefoil [Lotus corniculatus (São Gabriel and ARS-2620 cultivars)] and big trefoil [Lotus uliginosus (Maku cultivar)]. The plants were cultivated in pots and harvested at 150 and 210 days after sowing. Stems, leaves and roots were prepared in according to conventional anatomical techniques. The anatomical structures of L. corniculatus and L. uliginosus differed in terms of pith cell integrity, starch content in the parenchyma root cell and underground stem cortex. The leaves were amphistomatic, with phenolic idioblasts, small vascular bundles and few conducting elements. The underground system was diffuse, with adventitious shoots that grew in two directions, had no cataphylls, emerged from the ground, and gave rise to aerial stems. The morphological characteristics of the shoot system of both species matched the recent descriptions of soboles.
Este trabalho foi realizado para comparar e descrever anatomicamente os órgãos aéreos e subterrâneos de cornichão-comum [Lotus corniculatus (cv. São Gabriel; cv. ARS-2620)] e cornichão-dos-banhados [Lotus uliginosus (cv. Maku)]. As plantas foram cultivadas em vasos e colhidas aos 150 e 210 dias após semeadura. Amostras de caules, folhas e raízes foram preparadas de acordo com as técnicas convencionais de anatomia. As estruturas anatômicas das espécies L. corniculatus e L. uliginosus diferem quanto à integridade das células da medula das hastes, à quantidade aparente de amido nas células do parênquima das raízes e quanto ao tamanho da região cortical dos caules subterrâneos. As folhas são anfiestomáticas, possuem idioblastos fenólicos e feixes condutores de pequeno tamanho e com poucos elementos de condução. O sistema subterrâneo é difuso. Os caules têm origem adventícia, crescimento bipolar, não apresentam catáfilos e, ao emergirem do solo, originam ramos aéreos. As características morfológicas do sistema caulinar subterrâneo das duas espécies estão de acordo com a descrição recente aplicada ao sóbole. |
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ISSN: | 1516-3598 1806-9290 1806-9290 1516-3598 |
DOI: | 10.1590/S1516-35982009000900004 |