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Sains
Malaysiana 52(2)(2023):
http://doi.org/10.17576/jsm-2023-5202-22
Variations in the Indonesian Sauromatum
horsfieldii Miq. (Araceae) Based
on Characteristics of Morphology, Anatomy and Cytology
(Variasi Sauromatum
horsfieldii Miq. (Araceae) dari Indonesia Berdasarkan Ciri Morfologi,
Anatomi dan Sitologi)
YUZAMMI*,
INGGIT PUJI ASTUTI,
TRI HANDAYANI, TITUT YULISTYARINI & JULISASI TRI HADIAH
Research
Center for Plant Conservation, Botanic Gardens and Forestry - BRIN, Indonesia
Received: 26 March 2022/Accepted: 9 November 2022
Abstract
Sauromatum horfieldii Miq.
(Araceae) is distributed from India, China to South
East Asia. In Indonesia, the species only occurs in Sumatera, Jawa, and Bali. This study investigated the morphological,
anatomical, and cytological diversity of three populations of the species, one
from each of these Indonesian islands. The results showed that there was
variation in morphology of the petiole, number of leaflets and leaf margin. The
stomatal complex consisted of elliptical pores with reniform guard cells and
two or three subsidiary cells. The Indonesian plants of S. horsfieldii possessed two stomatal types, namely anomocytic and anisocytic, both
with abaxial distribution (hypostomatic).
Measurements on each population showed average stomatal indices (SI) of
10.01, 10.02 and 14.55, average stomatal lengths of 34.6, 33.8 and 29.50 μm, and average stomatal widths of 20.8, 21.1 and
16.50 μm for Sumatera, Jawa,
and Bali, respectively. The epidermal cells are mostly irregular and somewhat
undulate. The chromosome number for all the accessions was 2n =
26.
Keywords: Anatomy; cytology;
Indonesia; morphology; Sauromatum
horsfieldii
Abstrak
Taburan Sauromatum horfieldii Miq.
(Araceae) meliputi India,
China hingga ke Asia
Tenggara. Di Indonesia, spesies ini hanya dijumpai di Sumatera, Jawa dan Bali. Penyelidikan ini mengkaji variasi morfologi, anatomi dan sitologi spesies ini daripada tiga populasi di Indonesia
(Sumatera, Jawa dan Bali). Hasil kajian menunjukkan terdapat variasi morfologi pada petiol, bilangan anak daun dan tepi daun bervariasi. Kompleks stomata terdiri daripada liang elips dengan sel penjaga berbentuk ginjal dan dua atau tiga sel tetangga. S. horsfieldii dari Indonesia mempunyai dua jenis stomata, iaitu anomosit dan anisosit yang tersebar di permukaan bawah daun (hipostoma). Ukuran pada setiap populasi menunjukkan indeks stomata purata bernilai 10.01, 10.02 dan 14.55, panjang stomata purata bersaiz 34.6,
33.8 dan 29.50 μm, lebar stomata purata bersaiz 20.8, 21.1 dan 16.50 μm masing-masing bagi sampel Sumatera, Jawa dan Bali. Sebahagian besar sel epidermis didapati tidak teratur dan agak beralun. Bilangan kromosom bagi semua aksesi adalah 2n = 26.
Kata kunci: Anatomi; Indonesia; morfologi; Sauromatum horsfieldii; sitology
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*Corresponding author; email: yuzammi@yahoo.co.id
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