Ultrastructure of royal palm (Roystonea regia) leaf sheath

Abstract. Adzkia U, Nugroho N, Siregar IZ, Karlinasari L. 2020. Ultrastructure of royal palm (Roystonea regia) leaf sheath. Biodiversitas 21: 967-974. The royal palm (Roystonea regia (Kunth) F.Cook is one of the palm species that are many planted along the streets as part of urban landscapes. As bio...

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Autores principales:	ULFA ADZKIA, NARESWORO NUGROHO, ISKANDAR Z. SIREGAR, Lina Karlinasari
Formato:	article
Lenguaje:	EN
Publicado:	MBI & UNS Solo 2020
Materias:	crystallinity, fiber length, roystonea regia, silica, vascular bundles Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/c22759c0586b4fa797d05b0c79a54d41
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spelling	oai:doaj.org-article:c22759c0586b4fa797d05b0c79a54d412021-11-22T00:28:56ZUltrastructure of royal palm (Roystonea regia) leaf sheath1412-033X2085-472210.13057/biodiv/d210316https://doaj.org/article/c22759c0586b4fa797d05b0c79a54d412020-02-01T00:00:00Zhttps://smujo.id/biodiv/article/view/4985https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Abstract. Adzkia U, Nugroho N, Siregar IZ, Karlinasari L. 2020. Ultrastructure of royal palm (Roystonea regia) leaf sheath. Biodiversitas 21: 967-974. The royal palm (Roystonea regia (Kunth) F.Cook is one of the palm species that are many planted along the streets as part of urban landscapes. As biologically products, in nature they can self-cleaning with drop off their big leaves. The study aims to examine the morphological characteristics of ultrastructure and elemental content, crystallinity, as well as fibers derivation characteristics from the royal palm. The samples were taken out from leaf sheaths that divided into three sections along the width of i.e. outside, middle, and inside; in two conditions of leaf sheaths namely green and brownish-dry. The morphology structure and elemental content were observed by the Scanning Electron Microscopy (SEM) and the Energy Dispersive X-ray analysis (EDX), while the crystallinity was analyzed using X-ray diffraction (XRD), and fiber characteristics were measured to determine cell dimensions as well as to calculate Runkle ratio (RR), muhlsteph ratio (MR), coefficient of rigidity (CR), felting powder (FP), and flexibility ratio (FR). The diameter of palm fiber bundles was decreased from outside towards inside. The model of vascular tissue was rounded which located in the central region of the fiber bundles. The silicon content in the inside section was lower than those in the middle and outside sections. It was in line with the degree of crystallinity in the inside section which that higher than other sections. The highest degree of crystallinity was about 18 %. The fiber length of royal palm leaf sheath was in values around 6000 ?m. However, the royal palm leaf sheath had thick fiber walls and thin lumen, as well as other fiber derivation characteristics of muhlsteph ratio, the coefficient of rigidity and the flexibility ratio, were in low-quality values. For that reason, the study provides information that the royal palm sheath was recommended as a composite reinforcing material.ULFA ADZKIANARESWORO NUGROHOISKANDAR Z. SIREGARLina KarlinasariMBI & UNS Soloarticlecrystallinity, fiber length, roystonea regia, silica, vascular bundlesBiology (General)QH301-705.5ENBiodiversitas, Vol 21, Iss 3 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	crystallinity, fiber length, roystonea regia, silica, vascular bundles Biology (General) QH301-705.5
spellingShingle	crystallinity, fiber length, roystonea regia, silica, vascular bundles Biology (General) QH301-705.5 ULFA ADZKIA NARESWORO NUGROHO ISKANDAR Z. SIREGAR Lina Karlinasari Ultrastructure of royal palm (Roystonea regia) leaf sheath
description	Abstract. Adzkia U, Nugroho N, Siregar IZ, Karlinasari L. 2020. Ultrastructure of royal palm (Roystonea regia) leaf sheath. Biodiversitas 21: 967-974. The royal palm (Roystonea regia (Kunth) F.Cook is one of the palm species that are many planted along the streets as part of urban landscapes. As biologically products, in nature they can self-cleaning with drop off their big leaves. The study aims to examine the morphological characteristics of ultrastructure and elemental content, crystallinity, as well as fibers derivation characteristics from the royal palm. The samples were taken out from leaf sheaths that divided into three sections along the width of i.e. outside, middle, and inside; in two conditions of leaf sheaths namely green and brownish-dry. The morphology structure and elemental content were observed by the Scanning Electron Microscopy (SEM) and the Energy Dispersive X-ray analysis (EDX), while the crystallinity was analyzed using X-ray diffraction (XRD), and fiber characteristics were measured to determine cell dimensions as well as to calculate Runkle ratio (RR), muhlsteph ratio (MR), coefficient of rigidity (CR), felting powder (FP), and flexibility ratio (FR). The diameter of palm fiber bundles was decreased from outside towards inside. The model of vascular tissue was rounded which located in the central region of the fiber bundles. The silicon content in the inside section was lower than those in the middle and outside sections. It was in line with the degree of crystallinity in the inside section which that higher than other sections. The highest degree of crystallinity was about 18 %. The fiber length of royal palm leaf sheath was in values around 6000 ?m. However, the royal palm leaf sheath had thick fiber walls and thin lumen, as well as other fiber derivation characteristics of muhlsteph ratio, the coefficient of rigidity and the flexibility ratio, were in low-quality values. For that reason, the study provides information that the royal palm sheath was recommended as a composite reinforcing material.
format	article
author	ULFA ADZKIA NARESWORO NUGROHO ISKANDAR Z. SIREGAR Lina Karlinasari
author_facet	ULFA ADZKIA NARESWORO NUGROHO ISKANDAR Z. SIREGAR Lina Karlinasari
author_sort	ULFA ADZKIA
title	Ultrastructure of royal palm (Roystonea regia) leaf sheath
title_short	Ultrastructure of royal palm (Roystonea regia) leaf sheath
title_full	Ultrastructure of royal palm (Roystonea regia) leaf sheath
title_fullStr	Ultrastructure of royal palm (Roystonea regia) leaf sheath
title_full_unstemmed	Ultrastructure of royal palm (Roystonea regia) leaf sheath
title_sort	ultrastructure of royal palm (roystonea regia) leaf sheath
publisher	MBI & UNS Solo
publishDate	2020
url	https://doaj.org/article/c22759c0586b4fa797d05b0c79a54d41
work_keys_str_mv	AT ulfaadzkia ultrastructureofroyalpalmroystonearegialeafsheath AT naresworonugroho ultrastructureofroyalpalmroystonearegialeafsheath AT iskandarzsiregar ultrastructureofroyalpalmroystonearegialeafsheath AT linakarlinasari ultrastructureofroyalpalmroystonearegialeafsheath
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Ultrastructure of royal palm (Roystonea regia) leaf sheath

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