Sains Malaysiana 49(2)(2020): 223-236

http://dx.doi.org/10.17576/jsm-2020-4902-01

 

Ciri Fizikal dan Mikroskopi Anatomi Kayu Malvaceae Subfamili Bombacoideae dan Helicteroideae

(Physical and Microscopic Anatomical Characteristics of Malvaceae Woods Subfamilies Bombacoideae and Helicteroideae)

 

NORDAHLIA ABDULLAH SIAM1*, NORAINI TALIP2, RICHARD CHUNG CHENG KONG1 & LIM SENG CHOON1

 

1Institut Penyelidikan Perhutanan Malaysia, 52109 Kepong, Selangor Darul Ehsan, Malaysia

 

2Pusat Pengajian Sains Sekitaran dan Sumber Alam, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

 

Received: 19 December 2018/Accepted: 7 November 2019

 

ABSTRAK

Kajian mengenai ciri fizikal dan mikroskopi anatomi kayu telah dijalankan pada 36 spesies Malvaceae subfamili Bombacoideae (genus Bombax) dan Helicteroideae (genus Coelostegia, Durio, Kostermansia dan Neesia) di Malaysia. Objektif kajian ini ialah untuk menentukan kesesuaian penempatan genus Bombax danCoelostegia, Durio, Kostermansia dan Neesia di bawah subfamili berbeza iaitu Bombacoideae and Helicteroideae dengan membandingkan hasil  analisis fenetik berangka dan pengelasan berdasarkan molekul DNA; menentukan kesesuaian penempatan kelompok Helicteroideae: Durioneae di bawah subfamili Helicteroideae bersama dengan genus kelompok Helicteroideae s.s.; dan menyemak status Boschia sama ada sebagai genus tersendiri atau perlu digabungkan dengan Durio. Hasil analisis fenetik berangka menyokong cadangan pengelasan berdasarkan molekul DNA yang mengasingkan Bombax (Bombacoideae) daripada subfamili Helicteroideae. Keputusan analisis fenetik berangka juga menunjukkan bahawa kelompok Helicteroideae: Durioneae (Coelostegia, Durio, Kostermansia dan Neesia) perlu dikeluarkan daripada subfamili Helicteroideae dan dicadangkan untuk diletakkan di bawah subfamili baharu iaitu Durionoideae. Sebaliknya, kajian ini menolak cadangan pengelasan yang menaikkan subfamili Bombacoideae kepada famili Bombacaceae, subfamili Helicteroideae s.s. kepada famili Helicteradaceae dan subfamili Helicteroideae: Durioneae kepada famili Durionaceae. Hasil analisis fenetik berangka menunjukkan Boschia perlu digabungkan dengan Durio.

 

Kata kunci: Analisis fenetik berangka; anatomi kayu; Bombacoideae; Helicteroideae; Malvaceae

 

ABSTRACT

Studies on the physical and microscopic anatomical characteristics of woods were carried out on 36 species of Malvaceae subfamilies Bombacoideae (genus Bombax) and Helicteroideae (Coelostegia, Durio, Kostermansia and Neesia) in Malaysia. The objectives of this study were to construct groups using numerical phenetic analysis to compare with the classifications of DNA molecular studies, to investigate either Bombax should be separated from Coelostegia, Durio, Kostermansia and Neesia, or should be placed under different subfamilies which are Bombacoideae and Helicteroideae, respectively. In addition to that, to see the suitability of the Helicterodeae: Durioneae group to put under the subfamily Helicteroideae together with the Helicteroideae s.s. group. Moreover, to see the suitability of family concept, proposed by previous study. Besides that, to determine whether Boschia should stand as individual genus or it should be combined with Durio. Based on numerical phenetic analysis this study supports the concept of classification of molecular DNA that separates Bombax from Coelostegia, Durio, Kostermansia and Neesia and placed under different subfamilies. However, this numerical phenetic analysis shows that the Helicteroideae: Durioneae group (Coelostegia, Durio, Kostermansia and Neesia) should be removed from the subfamily Helicteroideae and proposed to be placed in a new subfamily which is Durionoideae. On the other hand, the present study disagrees with previous  classification that upgraded the subfamily Bombacoideae to family Bombacaceae, subfamily Helicteroideae s.s. to family Helicteradaceae and subfamily Helicteroideae: Durioneae to family Durionaceae. Our numerical phenetic analysis suggest the genus Boschia to be combined with Durio.

 

Keywords: Bombacoideae; Helicteroideae; Malvaceae; numerical phenetic analysis; wood anatomy

 

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*Corresponding author; email: nordahlia@frim.gov.my