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Journal : Jurnal Lahan Suboptimal

Agronomic evaluation of sub1-introgressed black rice lines under rainfed lowland conditions in South Sumatra Adriansyah, Fikri; Halimi, Entis Sutisna; Septiani, Septiani
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 15 No. 1 (2026): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.15.1.2026.784

Abstract

Rice (Oryza sativa L.) is a major staple crop, and black rice is increasingly valued for its nutritional and economic importance. In South Sumatra, Indonesia, rainfed lowland swamp ecosystems offer substantial potential for rice cultivation, but productivity is constrained by alternating flooding and drought stress. The introgression of the Sub1 gene provides tolerance to submergence and supports the development of adaptive black rice cultivars. This study aimed to evaluate the agronomic performance of six black rice lines carrying the Sub1 gene under rainfed lowland conditions. The experiment was conducted using a randomized complete block design with three replications. Agronomic traits, including phenology, tillering, yield components, and grain yield, were recorded and analyzed using analysis of variance, correlation, and principal component analysis (PCA). Significant differences among genotypes were observed for most agronomic traits, indicating substantial genetic variability. Regita5 and Febry1 showed superior performance, producing the highest grain yields of 3.53 and 3.37 t/ha, respectively, supported by higher numbers of productive tillers and filled grains per panicle. Correlation and PCA results revealed that grain yield was primarily influenced by tillering capacity and grain production traits, whereas 100-grain weight and phenological traits contributed weakly or negatively. These findings demonstrate that black rice lines carrying the Sub1 gene, particularly Regita5 and Febry1, possess strong agronomic potential for cultivation and as breeding materials in stress-prone swamp ecosystems, contributing to sustainable rice production under climate variability.
Co-Authors Abdul Rahman Abil Fadli, Malik Achmadi Achmadi Adriansyah, Fikri Ageng Saepudin Kanda Agung Setiyadi Akbar, M. Ali Alina Putri Sugianto, Fitri Alwine, Alwine Amalia, Hanifa Amarilla Melati Andi Aco Agus, Andi Aco Anis Solikhah Anjani, Gemala Anjelika, Desti Ansek, Inggrid Angelina Apriana Rahmawati Arianto, Steven Astriana, Destia Delima Delima Dian Rachma Wijayanti Dinni Randayani Lubis Djamalong, Ahmad Doni Setiawan Dumyati, Dumyati Dwi ASTUTI Dyah Ayuwati Waluyo Entis Sutisna Halimi Fadilah, Apriyanah Fakhira, Dhea Fariza Yulia Kartika Sari Fariza Yulia Kartika Sari Farros, M.Dzaki Fatma Zuhra Firman Firman Fitriani Nasution, Fitriani Fransiskus, Parto Gustina, irwanti Hadi Sulhan, Muhammad Hadibowo , Ronald Hadziq, M Fuad Hanif Muchdatul Ayunda Hartanto, Fitria Syarifa Hasibuan, Nuri Syamsika Heny Siswanti Hutabarat, Romauli Tiurma Inas Salsabila, Zumaila Joshua, William Juainah, Norma Koiriyah, Koiriyah Lailatul Farikhah Lia Novita Lisapaly, Marlen Lukitasari, Nurraya Maghribi, Berlian Setya Manan, La Ode Abdul Mardlotillah, Daffa Marvianda, Delva Rouza Maryuni, Maryuni Maya, Windy Dwi Metaningrum, Rohmawati Muhammad Khoirurosyid Muhammad Ridwanto Mundari, M. Masum Noviandani, Shifa Nur Khoiriyah Nurhayati Nurhayati Pangabean, Hadi Saputra Patricia, Gloria Pransiska, Mila Pratama, Reza Hardian Purbowati Purbowati Ratnayani Rau, Vio Eklesia Yulia Riawati, Theresia Riyadi, Sugeng Ahmad Rizki Widyan Aisya Rousmaliana, Rousmaliana Sabeni, Aolia Sintya, Dinda Putri Siti Fatimah Muis Siti Nuraeni, Hanny Sufrianto, Sufrianto Suharlian, Suharlian Sulastri, Lusi Sunarto Sunarto Susi Nurohmi Suwarto Suwarto Tania, Elsa Tri Sukoharjanti, Bintari Umi Faridah Wulan Fitriani Safari Yani, Yuni Ay Yoelianto, Yassmin Athaya Yumna, Najlaa Ghassani Yunita Rusidah Zunia Khairunnisa