Main Article Content
Abstract
A successful rice production on swampland would require a planting material from high yielding varieties adaptated to the swampy ecosystem. This study was carried out to compare the growth and yield characteristics of five rice lines and a check variety as grown on non-tidal swampland. The lines were F4 generation of bulk selection from the crosses involving Bengkulu swamp rice landraces (Hanafi Putih, Tigo-tigo, Harum Curup, and Lubuk Durian) and high yielding varieties for the irrigated field (Sidenuk and Bestari). The trial was conducted on a shallow non-tidal swampland with stagnant inundation no more than 50 cm in depth often occurred during the plant life cycle. The lines and the check variety (Inpara 4) were arranged in a randomized complete block design with three replications. Observations were made for the agronomic performances of the plant, including plant height, total tiller number clump-1, effective tiller number clump-1, heading date, maturity date, panicle length, grain number panicle-1, 100-grain weight, and grain yield clump-1. Significant variation among the genotypes was found for all observed traits. On average, the evaluated lines showed comparable growth and yield performances to the check variety. Tigo-tigo × Bestari was the tallest line and potential for medium depth swampland. This line showed good overall agronomic performances and yielded relatively higher than the check variety, but delayed in attaining maturity. For shallow swampland, Hanafi Putih x Sidenuk exhibited the most potent line by having good overall agronomic and yield performances, except late in maturity. For early maturing line, Lubuk Durian x Hanafi Putih showed its potential for shallow swampland. Although this line was not the best, it showed better overall agronomic performances than the check variety.
Keywords: F4 lines, growth and yield performance, rice landrace, swampland, plant maturity
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Copyright (c) 2019 Mohammad Chozin, Sarina Silalahi, Masdar Masdar, Sumardi Sumardi

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References
Ar-Riza, I. 2011. Teknologi inovasi mengubah rawa lebak menjadi lumbung pangan berkelanjutan. Sinartani 41: 5-6.
Babu, V R., K. Shreya, K.S. Dangi, G. Usharani, and A.S.Shankar. 2012. Correlation and path analysis studies in popular rice hybrids of India. Int. J. Sci. Res. Publ. 2(3): 1-5.
BALITTRA. 2012. Swamp land as barns for the future. Indonesian Research Institute Swampland for Agriculture. Agency for Agricultural Research and Development.
Djafar, Z. R. (2013). Kegiatan agronomis untuk meningkatkan potensi lahan lebak menjadi sumber pangan. Jurnal Lahan Suboptimal 2(1): 58-67. [In Indonesian with English abstract].
Hairmansis, A., H. Aswidinnoor, B. Suprihatno, W.B. Suwarno, and W.B. Suwarno. 2013. Yield and grain quality of ten promising rice breeding lines for tidal swamp areas. J. Agron. Indonesia 41(1): 1-8.
Irawan, B. 2016. Konversi lahan sawah: potensi dampak, pola pemanfaatannya, dan faktor determinan. Forum Penelitian Agro Ekonomi 23(1): 1-18. [In Indonesian with English abstract].
Irmawati, H. Ehara, R.A. Suwignyo, and J.I.Sakagami. 2015. Swamp rice cultivation in South Sumatra, Indonesia. Trop. Agric. Dev. 59(1): 35-39.
Mustafa, M.A. and M.Y. Elsheikh. 2007. Variability, correlation, and path coefficient analysis for yield and its components in rice. Afr. Crop Sci. J. 15(4): 183-189.
Nassir A L and O.J. Ariyo. 2011. Genotype x environment interaction and yield-stability analyses of rice grown in tropical inland swamp. Not Bot Horti Agrobo. 39: 220-225.
Norain, M.N., A. Shamsiah, R.H. Abdul, A.H. Nor, A.M. Haslinda, and W.A. Wan Aminuddin. 2014. Correlation analysis on agronomic characters in F2 population derived from MR64 and Pongsu Seribu 2. J. App. Sci. Agric. 9(18): 143-147.
Nugroho, K., A. Paidi, W. Wahidin, H.S. Abdulrachman, and I.P.G. Widjaja-Adhi. 1992. Peta areal potensial untuk pengembangan pertanian lahan pasang surut, rawa, dan pantai. Proyek Penelitian Sumberdaya Lahan. Pusat Penelitian Tanah dan Agroklimat, Bogor.
Purbiyanti, E., M. Yazid and I. Januarti. 2017. Konversi lahan sawah di Indonesia dan pengaruhnya terhadap kebijakan Harga Pembelian Pemerintah (HPP) gabah/beras. Jurnal Manajemen dan Agribisnis 14(3): 209 -2017. [In Indonesian with English abstract].
PUSDATIN (2016). Outlook komoditas pertanian: Padi. Pusat Data dan Informasi Pertanian. Kementerian Pertanian Republik Indonesia. 103 p. [In Indonesian]
Puspitahati. 2015. Karakteristik Lahan Rawa Lebak Desa Pelabuhan Dalam Kecamatan Pemulutan Kabupaten Ogan Ilir. Prosiding Seminar Nasional Lahan Suboptimal 2015, Palembang 8-9 Oktober 2015, pp. [In Indonesian with English abstract].
Ram, P.C., M.A. Mazid, A.M. Ismail, P.N. Singh, V.N. Singh, M.A.Haque., ..., and B.B. Singh. 2009. Crop and resource management in flood-prone areas: farmers’ strategies and research development. Proceedings Natural Resource Management for Poverty Reduction and Environmental Sustainability in Fragile Rice-Based Systems, Los Ba?os (Philippines), International Rice Research Institute, pp. 82-94.
Sahrawat, K.L. 2004. Iron toxicity in wetland rice and the role of other nutrients. J. Plant Nutr. 27 (8):1471–1504
Sahrawat K.L. 2010 Reducing iron toxicity in lowland rice with tolerant genotypes and plant nutrition. Plant Stress 4: 70-75.
Sakagami J.I. and N. Kawano. 2011. Survival of submerged rice in a flood-prone region of West Africa. Tropics 20: 55-66.
Waluyo, W. and S.Djamhari. 2013. Sifat Kimia Tanah Dan Kesesuaian Lahan Pada Masing-masing Tipologi Lahan Rawa Lebak Untuk Budidaya Tanaman Padi, Kasus Di Desa Tanjung Elai, Ogan Komering Ilir. Jurnal Sains dan Teknologi Indonesia, 13(3).204-209. [In Indonesian with English abstract].
Widjaja-Adhi, I.P.G., K. Nugroho, D.S. Ardi, and A.S. Karama. 1992. Sumberdaya lahan rawa Potensi, keterbatasan, dan pemanfaatan. In. Partohardjono, Sutjipto P. dan M. Syam dan Mahyuddin. (editor). Risalah Pertemuan Nasional Pengembangan Pertanian Lahan Pasang Surut dan Lebak. Puslitbangtan. Cisarua, 3-4 Maret 1992. p 19-38. [In Indonesian]