MORPHOLOGICAL VARIATION IN SELECTED CITRUS SPECIES: A QUALITATIVE ANALYSIS OF SEED MORPHOLOGY AND FRUIT CHARACTERISTICS

Authors

  • O.A. BELLO Department of Biology, Osun State College of Education, Ila-Orangun, Nigeria
  • O.M. ABIONA Department of Biology, Osun State College of Education, Ila-Orangun, Nigeria

Keywords:

Citrus species, Colour, Dispersal, Morphology, Seeds, Variation

Abstract

Citrus species exhibit a wide range of morphological traits essential for taxonomy, genetic breeding, and germplasm conservation. This study assessed morphological variations in fruits and seeds of Citrus grandis, Citrus limon, and Citrus medica, focusing on colour differences and structural features. Fruit specimens were selected based on availability. Seed colour was analyzed using the Munsell Colour Chart. Ten seeds per species were evaluated and fruit structures were examined for the number of ridges and prominent lines. Colour variation in C. grandis ranged from White (8/2 2.5Y) to Yellowish Red (8/2 10YR); in C. medica from Yellowish Red (8/2 2.5YR) to Yellowish Red (8/2 10YR); and in C. limon, from Light Olive Brown (5/6 2.5Y) to White (8/2 2.5Y), showing a broader spectrum. Ridge and line counts varied significantly among species and within individuals. Qualitative colour analysis using the Munsell Chart proved to be a valuable complement to traditional morphological approaches. Results suggest that fruit and seed colouration are not only taxonomically significant but may also influence ecological interactions with dispersal agents.

 

 

Author Biographies

O.A. BELLO , Department of Biology, Osun State College of Education, Ila-Orangun, Nigeria

Department of Biology, Osun State College of Education, Ila-Orangun, Nigeria

O.M. ABIONA, Department of Biology, Osun State College of Education, Ila-Orangun, Nigeria

Department of Biology, Osun State College of Education, Ila-Orangun, Nigeria

References

Ahmed, Z.U., Hassan, M.A., Begum, Z.N.T., Khondker, M., Kabir, S.M.H., Ahmad, M., Ahmed, A.T.A., Rahman, A.K.A., Haque, E.U. 2009.Encyclopedia of Flora and Fauna of Bangladesh, Vol. 9. Angiosperms: Dicotyledons (Rosaceae–Zygophyllaceae). Asiatic Society of Bangladesh.

Alam, M.K., Mohiuddin, M., Pasha, M.K., Uddin, M.Z. 2006.Indigenous knowledge of herbal medicines in Sreemangal, Bangladesh.Bangladesh Journal of Plant Taxonomy 13(1): 9–18.

Anisuzzaman, M., Rahman, A.H.M.M., Harun-or-Rashid, M., Naderuzzaman, A.T.M., Islam, A.K.M.R. 2007. An ethnobotanical study of Madhupur, Tangail. Journal of Applied Sciences Research 3(7): 519–530.

Bewley, J. D., Bradford, K. J., Hilhorst, H. W. M., & Nonogaki, H. 2013. Seeds: Physiology of Development, Germination and Dormancy (3rd Ed.). Springer.

Arefin, M.K., Rahman, M.M., Islam, M.A., Haque, M.A. 2011. Traditional knowledge of using medicinal plants in Khagrachari district, Bangladesh.International Journal of Pharmacy and Life Sciences 2(5): 712–718.

Janick, J. 2005. The origins of fruits, fruit growing, and fruit breeding. Plant Breeding Reviews 25: 255–320.

Khan, M.S., Huq, A.M. 1975.Medical ethnobotany of the tribal people of Bangladesh.Bangladesh Journal of Botany 4(2): 57–60.

Krueger, R.R., Navarro, L. 2007. Citrus germplasm resources. In: Khan, I.A. (Ed.), Citrus Genetics, Breeding and Biotechnology. CABI Publishing.

Ladaniya, M. 2010. Citrus Fruit: Biology, Technology and Evaluation. Academic Press.576 pp.

Munsell Colour. 2009. Munsell Soil Colour Charts. Grand Rapids, MI: Munsell Colour.

Nicolosi, E., Deng, Z.N., Gentile, A., La Malfa, S., Continella, G., Tribulato, E. 2000.Citrus phylogeny and genetic origin of important species as investigated by molecular markers.Theoretical and Applied Genetics 100(8): 1155–1166.

Rahman, A.H.M.M. 2013. Traditional medicinal plants used by local people at the village Sabgram under SadarUpazila of Bogra District, Bangladesh. Research in Plant Sciences 1(3): 39–42.

Rahman, A.H.M.M., Jamila, M. 2015. Documentation of ethnomedicinal knowledge on plant resources used by the people of KeshabpurUpazila, Jessore District, Bangladesh.Research in Plant Sciences 3(1): 5–11.

Rahman, A.H.M.M., Keya, S.S. 2014. Ethnomedicinal survey of angiospermic plants used by the ethnic people in Rangamati, Bangladesh.Research in Plant Sciences 2(2): 31–37.

Rahman, A.H.M.M., Sarker, S.S. 2015. Study of ethnomedicinal plants used by the local people of Feni district, Bangladesh.Research in Plant Sciences 3(2): 19–25.

Samson, J.A. 2016. Tropical Fruits, 2nd ed. Longman Scientific & Technical.

Scora, R.W. 1975. On the history and origin of citrus.Bulletin of the Torrey Botanical Club 102(6): 369–375.

Schaefer, H.M., Schaefer, V., Levey, D.J. 2004. How plant-animal interactions signal new insights in communication. Trends in Ecology & Evolution 19(11): 577–584.

Sharma, O.P. 2004. Plant Taxonomy.1st ed. Tata McGraw-Hill Publishing Company.

Spjut, R.W. 1994. A systematic treatment of fruit types.Memoirs of the New York Botanical Garden 70: 1–182.

Swingle, W.T., Reece, P.C. 1967. The botany of citrus and its wild relatives. In: The Citrus Industry, Vol. 1: 190–430. University of California Press.

Uddin, S.B., Hassan, M.A., Khondker, M. 2013. Ethnobotanical survey of medicinal plants in Lawachara National Park of Moulvibazar district, Bangladesh. Bangladesh Journal of Plant Taxonomy 20(2): 181–191.

Willson, M. F., Traveset, A. 2000. The Ecology of seed dispersal. In M. Fenner (Ed.), Seeds: The Ecology of Regeneration in Plant Communities (2nd ed., pp. 85–110). CABI Publishing.

Yusuf, M., Begum, J., Hoque, M.N., Chowdhury, J.U. 2006.Medicinal Plants of Bangladesh, 2nd ed. Bangladesh Council of Scientific and Industrial Research (BCSIR).

Yusuf, M., Wahab, M.A., Chowdhury, J.U. 2009.Medicinal plant trade in Bangladesh.Journal of Economic and Taxonomic Botany 33(1): 167–175.

Zar, J.H. 1999. Biostatistical Analysis (4th ed.). Prentice Hall, Upper Saddle River, New Jersey, pp. 471–519.

Downloads

Published

2025-09-24

Issue

Section

Original Manuscript