Sains Malaysiana 44(1)(2015): 17–23

Variation in Anatomical Characteristics of Bamboo, Bambusa rigida

(Variasi dalam Ciri Anatomi Buluh, Bambusa rigida)

XING-YAN HUANG, JIN-QIU QI*, JIU-LONG XIE, JIAN-FENG HAO,

BAI-DONG QIN & SI-MIN CHEN

College of Forestry, Sichuan Agricultural University, Yaan, Sichuan 625014, China

Received: 8 November 2013/Accepted: 30 June 2014

ABSTRACT

The culms of bamboo Bambusa rigida ranging from 1, 3 and 5 year old were obtained and investigated for anatomical characteristics in different ages, heights and zones in radial direction of culm wall thickness. The vascular bundles were denser and smaller at the top portion and outer zone of all age groups. No significant differences in vascular bundle frequency and size were found among the tree age groups. Metaxylem vessels did not vary significantly among ages. Fibre and parenchyma were longer in the middle portion of the height and middle zone in radial direction of culms wall. No significant differences in fibre and parenchyma length were observed in all age groups. The wall thicknesses of fibre and parenchyma were thicker in the top portion and outer zone. Furthermore, the wall thicknesses of fibre and parenchyma increased significantly from 1 to 3 year, showing that there is a maturing progress from 1 to 3 year.

Keywords: Anatomical morphologies; Bambusa rigida; fibre; parenchyma; vascular bundle

ABSTRAK

Kulm buluh Bambusa rigida berusia 1, 3 dan 5 tahun telah diperoleh dan dikaji untuk ciri anatomi pada pelbagai peringkat umur, ketinggian dan zon arah radius ketebalan dinding kulm. Berkas vaskular adalah lebih tumpat dan kecil di bahagian atas dan zon luar bagi semua peringkat umur. Tiada perbezaan yang signifikan dalam kekerapan berkas vaskular dan saiz ditemui antara kumpulan umur pokok. Sel salur metaxilem pula tidak berubah dengan ketara antara peringkat umur. Serabut dan parenkima adalah lebih panjang di bahagian tengah ketinggian dan zon tengah arah radius dinding kulm. Tiada perbezaan yang signifikan dalam panjang gentian dan parenkima diperhatikan pada semua peringkat umur. Ketebalan dinding serabut dan parenkima adalah lebih tebal di bahagian atas dan zon luar. Tambahan pula, ketebalan dinding serabut dan parenkima meningkat dengan ketara daripada usia 1 kepada 3 tahun, yang menunjukkan bahawa terdapat kemajuan daripada segi kematangan daripada usia 1 ke 3 tahun.

Kata kunci: Anatomi morfologi; Bambusa rigida; berkas vaskular; parenkima; serabut

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*Corresponding author; email: qijinqiu2005@aliyun.com