COMPARATIVE STUDY ON TRICHOMES TYPES OF WILD SPECIESOF SOLANUML., 1753 (SOLANALES, SOLANACEAE) IN EGYPT AND ITS TAXONOMIC SIGNIFICANCE
Trichomes are extensions of the epidermis, frequently used as diagnostic traits for determining plant species. SolanumL., 1753 is a widespread and taxonomically complex genus. Although the genus Solanumhas been the subject of numerous types of research, little attention has be...
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| Format: | Article |
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University of Baghdad
2023-06-01
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| Series: | Bulletin of the Iraq Natural History Museum |
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| Online Access: | https://jnhm.uobaghdad.edu.iq/index.php/BINHM/article/view/831/367 |
| _version_ | 1797797766234112000 |
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| author | Rania A. Hassan Rim Hamdy |
| author_facet | Rania A. Hassan Rim Hamdy |
| author_sort | Rania A. Hassan |
| collection | DOAJ |
| description | Trichomes are extensions of the epidermis, frequently used as diagnostic traits for determining plant species. SolanumL., 1753 is a widespread and taxonomically complex genus. Although the genus Solanumhas been the subject of numerous types of research, little attention has been given to the trichomes of the wild species found in Egypt. Therefore, the objective of the current study was to examine trichome types in ten wild Solanum species and assess their taxonomic importance. Using light, scanning electron microscopy and line drawings, indumentum characteristics on the abaxial leaf surface are investigated. The results showed a wide range of variation in trichome density on a 1mm2area of leaf blade (sparse, moderate, and dense), nature (glandular or non-glandular, simple or stellate), and structure (number of composing cells in simple non-glandular and glandular stalk and head; the number of radiating rays in stellate hairs). SEM revealed the existence of unique wax structures, including warty granules in addition to flakes. Our observations are consistent with the general characteristics of the subgenus Leptostemonumand the subgenus Solanum. This work provides strong evidence for the separation and interspecific delimitation of the investigated Solanum species using trichome morphology as a significant taxonomic trait. |
| first_indexed | 2024-03-13T03:54:20Z |
| format | Article |
| id | doaj.art-e29cfdbc3078495e818c820479074bfc |
| institution | Directory Open Access Journal |
| issn | 1017-8678 2311-9799 |
| language | English |
| last_indexed | 2024-03-13T03:54:20Z |
| publishDate | 2023-06-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Bulletin of the Iraq Natural History Museum |
| spelling | doaj.art-e29cfdbc3078495e818c820479074bfc2023-06-22T09:06:35ZengUniversity of BaghdadBulletin of the Iraq Natural History Museum1017-86782311-97992023-06-01173349373https://doi.org/10.26842/binhm.7.2023.17.3.0349COMPARATIVE STUDY ON TRICHOMES TYPES OF WILD SPECIESOF SOLANUML., 1753 (SOLANALES, SOLANACEAE) IN EGYPT AND ITS TAXONOMIC SIGNIFICANCERania A. Hassan0https://orcid.org/0000-0003-0253-0972Rim Hamdy1https://orcid.org/0000-0001-7777-693XBotany and Microbiology Department, Faculty of Science, Cairo University, Egyptepartment of Botany, Faculty of Science, The Herbarium, Cairo University, Giza, EgyptTrichomes are extensions of the epidermis, frequently used as diagnostic traits for determining plant species. SolanumL., 1753 is a widespread and taxonomically complex genus. Although the genus Solanumhas been the subject of numerous types of research, little attention has been given to the trichomes of the wild species found in Egypt. Therefore, the objective of the current study was to examine trichome types in ten wild Solanum species and assess their taxonomic importance. Using light, scanning electron microscopy and line drawings, indumentum characteristics on the abaxial leaf surface are investigated. The results showed a wide range of variation in trichome density on a 1mm2area of leaf blade (sparse, moderate, and dense), nature (glandular or non-glandular, simple or stellate), and structure (number of composing cells in simple non-glandular and glandular stalk and head; the number of radiating rays in stellate hairs). SEM revealed the existence of unique wax structures, including warty granules in addition to flakes. Our observations are consistent with the general characteristics of the subgenus Leptostemonumand the subgenus Solanum. This work provides strong evidence for the separation and interspecific delimitation of the investigated Solanum species using trichome morphology as a significant taxonomic trait.https://jnhm.uobaghdad.edu.iq/index.php/BINHM/article/view/831/367glandularnon-glandularscanning electron microscopysolanum |
| spellingShingle | Rania A. Hassan Rim Hamdy COMPARATIVE STUDY ON TRICHOMES TYPES OF WILD SPECIESOF SOLANUML., 1753 (SOLANALES, SOLANACEAE) IN EGYPT AND ITS TAXONOMIC SIGNIFICANCE Bulletin of the Iraq Natural History Museum glandular non-glandular scanning electron microscopy solanum |
| title | COMPARATIVE STUDY ON TRICHOMES TYPES OF WILD SPECIESOF SOLANUML., 1753 (SOLANALES, SOLANACEAE) IN EGYPT AND ITS TAXONOMIC SIGNIFICANCE |
| title_full | COMPARATIVE STUDY ON TRICHOMES TYPES OF WILD SPECIESOF SOLANUML., 1753 (SOLANALES, SOLANACEAE) IN EGYPT AND ITS TAXONOMIC SIGNIFICANCE |
| title_fullStr | COMPARATIVE STUDY ON TRICHOMES TYPES OF WILD SPECIESOF SOLANUML., 1753 (SOLANALES, SOLANACEAE) IN EGYPT AND ITS TAXONOMIC SIGNIFICANCE |
| title_full_unstemmed | COMPARATIVE STUDY ON TRICHOMES TYPES OF WILD SPECIESOF SOLANUML., 1753 (SOLANALES, SOLANACEAE) IN EGYPT AND ITS TAXONOMIC SIGNIFICANCE |
| title_short | COMPARATIVE STUDY ON TRICHOMES TYPES OF WILD SPECIESOF SOLANUML., 1753 (SOLANALES, SOLANACEAE) IN EGYPT AND ITS TAXONOMIC SIGNIFICANCE |
| title_sort | comparative study on trichomes types of wild speciesof solanuml 1753 solanales solanaceae in egypt and its taxonomic significance |
| topic | glandular non-glandular scanning electron microscopy solanum |
| url | https://jnhm.uobaghdad.edu.iq/index.php/BINHM/article/view/831/367 |
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