Morphological Variations of Weedy Rice (Oryza sativa ssp.) In Selected Rice Fields of Peninsular Malaysia
Keywords:Morphological variations, Oryza sativa management, weedy rice accessions
Weedy rice or locally known as ‘padi angin’ has been infesting rice granary areas in Malaysia for the last 20 years. The outbreak of weedy rice in the country started during the late 1980s in Projek Barat Laut Selangor (PBLS) due to the adoption of direct-seeding practices. Weedy rice can be characterized by its early maturing and easy-shattering traits. The objective of this study was to determine the morphological variations of weedy rice in selected granary areas located in Peninsular Malaysia. A total of 110 weedy rice accessions were collected from nine locations in three granary areas in Peninsular Malaysia (the Western, Eastern, & Northern regions). The collected weedy rice accessions were planted under greenhouse conditions to study their morphological features. Results of the present study indicated that 73.6% of weedy rice accessions were awnless while the remaining 26.4% produced awn. Selected traits such as plant height, flag leaf length, culm length, number of tillers, number of panicles, and panicle length were included in the Principal Component Analysis (PCA). The weedy rice accessions were grouped into three different clusters mainly Cluster 1: cultivated rice and awnless populations, Cluster 2: brown and red pericarp awnless populations, and Cluster 3: awned populations. The findings of this study may be used as guidance for farmers and researchers for designing sustainable weedy rice management in the future.
Ahmad, M.S., Fahmi, M.R., Rahim, M.A. & Ibrahim, N. 2016. Impact of the combination of land use activities and seasons change on the water resources quality: case study of North Canal, Kedah. Sains Malaysiana, 45(12): 1857-1867. DOI: https://doi.org/10.17576/jsm-2016-4512-10
Arietta-Espinoza, G., Sanchez, E. & Vargas, S. 2005. The weedy rice complex in Costa Rica. I. Morphological study of relationships between commercial rice varieties, wild Oryza relatives and weedy types. Genetic Resources and Crop Evolution, 52: 575-587. DOI: https://doi.org/10.1007/s10722-004-6109-x
Azmi, M., Abdullah, M.Z. & Muhammad, H. 2001. Pengenalan dan Kawalan Padi Angin di Malaysia. Serdang: MARDI Publication.
Azmi, M., Watanabe, H. & Abdullah, M.Z. 1994. Morphological characteristics of padi angin. In: Padi angin workshop (MARDI Seberang Perai, Penang, Malaysia, 18 May 1994) MARDI, Penang, Malaysia 54.
Bajrai, F.S.M., Ismail, B.S. & Mardiana-Jansar, K. 2017. Optimization method for simultaneous extraction and detection of imazapic and imazapyr herbicides in soil and water using HPLC-UV with verification of LC-MS. Sains Malaysiana, 46(12): 2339-2348. DOI: https://doi.org/10.17576/jsm-2017-4612-10
Baldi G. 1971. Presenza del carattere pericarpo rosso in varieta di riso coltivate (O. sativa) Il riso, 20: 299-302.
Biodiversity International, IRRI and WARDA. 2007. Descriptors for wild and cultivated rice (Oryza spp.) Bioversity International, Rome, Italy; International Rice Research Institute, Los Banos, Philippines; WARDA, Africa Rice Center, Cotonou, Benin.
Chauhan, B.S. 2013. Strategies to manage weedy rice in Asia. Crop Protection, 48: 51-56. DOI: https://doi.org/10.1016/j.cropro.2013.02.015
Delouche, J.C., Burgos, N.R. & Gealy, D.R. 2007. Weedy Rices: Origin, Biology, Ecology and Control. FAO, Rome.
Estorninos, L. E., Gealy, D. R. & Talbert, R. E. 2002. Growth response of rice (Oryza sativa) and red rice (O. sativa) in a replacement series study. Weed Technology, 16(2002): 401-406. DOI: https://doi.org/10.1614/0890-037X(2002)016[0401:GROROS]2.0.CO;2
Fogliatto, S., Vidotto, F. & Ferrero, A. 2012. Morphological characterisation of Italian weedy rice (Oryza sativa) populations. Weed Research, 52: 60-69. DOI: https://doi.org/10.1111/j.1365-3180.2011.00890.x
Gealy, D.R., Agrama, H.A. & Eizenga, G.C. 2009. Exploring genetic and spatial structure U.S weedy red rice (Oryza sativa) in relation to rice relatives worldwide. Weed Science, 57(6): 627-643. DOI: https://doi.org/10.1614/WS-09-018.1
Herman, T., Murchie, E.H. & Warsi, A.A. 2015. Rice production and climate change: a case study of Malaysian Rice. Pertanika Journal of Tropical Agriculture Science, 38(3): 321-328.
Hussain, Z.P.M.D., Man, A. & Othman, A. S. 2010. Morphological study of the relationships between weedy rice accessions (Oryza sativa Complex) and commercial rice varieties in Pulau Pinang rice granary areas. Tropical Life Science Research, 21(2): 27-40.
Karim, R.S.M., Zainal, M., Mansor, M. & Azmi, M. 2010. Weedy rice: A cancerous threat for rice growers in Malaysia. Proceedings of the National Rice Conference 2010. Perak: Malaysian Agricultural Research and Development Institute.
Maclean, J.L., Dawe, D.C., Hardy, B. & Hettel, G.P. 2002. Rice almanac source book for the most important economic activity on earth. Published by CABI (Oxon, UK) for IRRI (Manila) WARDA (Cote d’Ivoire), CIAT (Colombia) and FAO (Rome, Italy).Makino, A. 2011. Photosynthesis, grain yield, and nitrogen utilization in rice and wheat. Plant Physiology, 155(1): 125-129. DOI: https://doi.org/10.1079/9780851996363.0000
Makino, A. 2011. Photosynthesis, grain yield, and nitrogen utilization in rice and wheat. Plant Physiology, 155(1): 125-129. DOI: https://doi.org/10.1104/pp.110.165076
Mardiana-Jansar, K., Bajrai, F.S.M., Ishak, M.S. & Ismail, B.S. 2019. Effect of OnDuty™ herbicide on weed populations and rice yields in selected rice fields, Melaka, Malaysia. Sains Malaysiana, 48(11): 2355-2365. DOI: https://doi.org/10.17576/jsm-2019-4811-07
Nadir, S., Xiong, H.B., Zhu, Q., Zhang, X.L., Xu, H.Y., Li, J., Dongchen W., Henry, D., Guo X.Q., Khan, S., Suh, H.S, Lee, D.S. & Chen, L.J. 2017. Weedy rice in sustainable rice production. A review. Agronomy for Sustainable Development, 37(5): 46-58. DOI: https://doi.org/10.1007/s13593-017-0456-4
Nunes, F.S., Schaedler, C.E. & Chiapinotto, D.M. 2018. Weed phytosociological survey in irrigated rice. Planta Daninha, v36: e018166625. DOI: https://doi.org/10.1590/s0100-83582018360100044
Perera, U.I.P., Ratnasekara, D., Madurangi, S.A.P., Senanayake, S.G.J.N., Bentota, A.P. & Wijesekara, G.A.W. 2012. Genetic divergence of Sri Lankan weedy rice based on quantitative morphological traits. Tropical Agriculturist, 160: 41-54.
Prathepha, P. 2009. Seed morphological traits and genotypic diversity of weedy rice (Oryza sativa f. spontanea) populations found in the Thai Hom Mali rice fields of north-eastern Thailand. Weed Biology and Management, 9: 1-9. DOI: https://doi.org/10.1111/j.1445-6664.2008.00312.x
Rajamoorthy, Y., Abdul Rahim, K.B. & Munusamy, S. 2015. Rice industry in Malaysia: Challenge, policies and implications. Procedia Economics and Finance, 31: 861-867. DOI: https://doi.org/10.1016/S2212-5671(15)01183-1
Rathore, M., Singh, R., Kumar, B. & Chauhan, B. S. 2016. Characterization of functional trait diversity among Indian cultivated and weedy rice populations. Scientific Reports, 6: 24176. DOI: https://doi.org/10.1038/srep24176
Ratnasekara, D., Perera, U.I.P., He, X., Senanayake, S.G.J.N., Wijesekara, G.A.W., Yang, X. & Lu, B. 2014. High level of variation among Sri Lankan weedy rice populations, as estimated by morphological characterization. Weed Biology and Management, 14(1): 68-75. DOI: https://doi.org/10.1111/wbm.12034
Shivrain, V.K., Burgos, N.R. & Agrama, H.A. 2010. Genetic diversity of weedy red rice (Oryza sativa) in Arkansas, USA. Weed Research, 50: 289-302. DOI: https://doi.org/10.1111/j.1365-3180.2010.00780.x
Shrestha, S., Sharma, G., Roma-Burgos, N. & Tseng, T.M. 2020. Competitive ability of weedy rice: Toward breeding weed-suppressive rice cultivars. Journal of Crop Improvement. 2020(34): 455–469. DOI: https://doi.org/10.1080/15427528.2020.1733158
Sudianto, E., Neik, T-X., Tam, S.M., Chuah, T-S., Idris, A.A., Olsen, K.M. & Song, B-K. 2016. Morphology of Malaysian weedy rice (Oryza sativa): Diversity, origin and implications for weed management. Weed Science, 64(3): 501-512. DOI: https://doi.org/10.1614/WS-D-15-00168.1
Wahab, A. & Suhaimi, O. 1991. Padi angin: Characteristics, adverse effects and method of its eradication. Teknologi Padi, 7: 21-31.
Zhang, S., Hu, J., Chen, Z-H., Chen, J-F., Zheng, Y-Y. &, Song, W-J. 2005. Effects of Pb pollution on seed vigor of three rice cultivars. Rice Science, 12(3): 197-202.
Ziska, L.H, Gealy, D.R., Burgos, N., Caicedo, A.L., Gressel, J., Lawton-Rauh, A.L., Avila, L.A., Theisen, G., Norsworthy, J., Ferrero, A. & Vidotto, F. 2015. Weedy (red) rice: an emerging constraint to global rice production. Advances in Agronomy, 129: 181-228. DOI: https://doi.org/10.1016/bs.agron.2014.09.003
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