Changes of leaf morphology of Hoya amorosoae from varying light exposure: Its implications to species description and taxonomy

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Research Paper 01/06/2016
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Changes of leaf morphology of Hoya amorosoae from varying light exposure: Its implications to species description and taxonomy

Milton Norman D. Medina, Victor B. Amoroso, Robert Dale Kloppenburg
J. Bio. Env. Sci.8( 6), 232-237, June 2016.
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Abstract

In this paper, H.amorosoae (Green and Kloppenburg, 2014) leaves exposed to varing light intensities and its morphological changes have been documented using leaf morphometry and leaf morphological description. Morphometry of leaf samples provided evidence on the changes of measurements comparing leaf width, length, and thickness under shaded environment and in the natural habitat. In addition, anthocyanin has been proven to occur in the leaves in response to sunlight exposure. Using these data of the vegetative structures in describing Hoya is somewhat not very conclusive. It is therefore recommended to use both vegetative and reproducive structures when describing particular plant species specially Hoya as species of this plant group are very prone to exhibit phenoplasticity.

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Angela C, Little K. 1997. Colorimetry of anthocyanin pigmented products; Changes in pigment composition with time. Journal of Food Science 42, 1570.

Gould KS, Kuhn DN, Lee DW, Oberbauer SF. 1995. Why leaves are sometimes red. Nature 378, 241-242.

Gould KS, Markham KR, Smith RG, Goris JJ. 2000. Functional role of anthocyanins in the leaves of Quintinia serrata A Cunn. Journal of Experimental Botany 51, 1107-1115.

Green T, Kloppenburg RD. 2014. Hoya amorosoae. Hoya, 3(2), 3-8.

Kirk JTO. 1996. Light and photosynthesis in aquatic ecosystems. 2nd ed. Cambridge University Press, New York.

Laleh G, Frydoonfar H, Heidary R, Jameei R, Zare S. 2006. The Effect of Light, Temperature, pH and Species on Stability of Anthocyanin Pigments in Four Berberis Species. Pakistan Journal of Nutrition, 5(1), 90-92.

Madsen TV, Maberly SC. 1991. Diurnal variation in light and carbon limitation of photosynthesis by two species of submerged freshwater macrophyte with a differential ability to use bicarbonate. Freshwater Biology 26, 175-187.

Palamidis N, Markakis T. 1975. Structure of anthocyanin. Journal of Food Science 40, 104.

Sand-Jensen K, Madsen TV. 1991. Minimum light requirements of submerged freshwater macrophytes in laboratory growth experiments. Journal of Ecology 79, 749-764.

Schwarz AM, Howard-Williams C, Clayton J. 2000. Analysis of relationships between maximum depth limits of aquatic plants and underwater light in 63 New Zealand lakes. New Zealand Journal of Marine and Freshwater 34, 157-174.

Tanner CC, Clayton JS, Harper LM. 1986. Observations on aquatic macrophytes in 26 northern New Zealand lak`es. New Zealand Journal of Botany, 24(4), 539-551.

Tavechio WLG, Thomaz SM. 2003. Effects of Light on the Growth and Photosynthesis of Egeria najas Planchon. Brazilian Archives of Biology & Technology 46(2), 203-209.

Thomaz SM, Bini LM, Souza DC. 1998. Biomass and maximum colonization depth of Egeria najas Planchon (Hydrocharitaceae) at Itaipu Reservoir, Brazil. In: Monteiro, A.; Vasconcelos, T. and Catarino, L. (eds.). Management and Ecology of Aquatic Plants (Proc. 10th EWRS Symposium on Aquatic Weed). Lisbon : EWRS/APRH. 223-226 p.