Comparative vegetative and reproductive morphology and propagation of Monochoria hastata (Burm. F.) Presl and Monochoria vaginalis (L.) Solms

Jaafar, Nurul Ammar Illani (2009) Comparative vegetative and reproductive morphology and propagation of Monochoria hastata (Burm. F.) Presl and Monochoria vaginalis (L.) Solms. [Project Paper] (Submitted)

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Abstract

This study was performed to determine the comparative morphology and propagation of Monochoria haslata from Jalan Upper Lanang, Sibu and Kg. Jepak, Bintulu and M vagina/is from Kg. Jepak and Jabatan Kerja Raya, Bintulu. Monochoria has/ala was growing in ditches in the two sampling sites while M vagina/is growing in natural ditches in Kampung Jepak, Bintulu and concrete ditches in Jabatan Kerja Raya, Bintulu. The species are perennial plants consisting of vegetative (leaves, petioles and roots) and reproductive (inflorescences, fruit and seeds) structures. There is significant variation of vegetative and reproductive structures between both species. Monochoria has/ala and M vagina/is have significant variation in dimension for petiole diameter at apex and base, leaves length and leaf width. Both species have different leaf shape where M has/ala leaves are hastate with the base triangular in shape while M vagina/is leaves are ovate with base heart shape. Monochoria has/ala has broadly acute apex while M vagina/is has narrowly acute apex. Monochoria hastata petiole vein is less dense compared to M vagina/is. Petiole cross section of M hastata posses pith at the centre of the petiole while there is no pith in M vagina/is cross section. Monochoria hastata petioles are connected with rhizome while M vagina/is petioles are connected with stolon. Roots hairs for M hastata are less condensed compare to M vagina/is. Reproductive structure of both species have significant variation in dimension for number of flower per inflorescence, pedicel length, petal, sepal length, stamen (yellow) length, anther (yellow) length, filament (yellow) length, stigma length and seed. Both species also exhibited significant variation in reproductive morphology with respect to inflorescence arrangement, anther colour, pedicel cross section, fruit inflorescence and seed. However, both species also has similarities for vegetative and reproductive structures in terms of leaf colour, distribution of stomata at abaxial and adaxial surface, petiole colour, flower shape and colour, components of flower and fruits. Propagation of this plant was done through germination of seeds and rhizome. The propagation of rhizome is more effective than seed as a longer time is taken by seed to germinate to seedlings. The stages from seed germination to seedlings, juvenile, flowering and fruiting plants is approximately four months. The rhizome development begins with the emergences of leaves bud and develops into juvenile, flowering and fruiting plants until the place it dead takes approximately three months.

Item Type:	Project Paper
Subjects:	Q Science > QK Botany
Faculty:	Faculty of Agriculture and Food Sciences
Depositing User:	Mr. Azman Mohamad
Date Deposited:	08 Dec 2025 07:53
Last Modified:	08 Dec 2025 07:53
URI:	http://psaspb.upm.edu.my/id/eprint/2636

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