Baharudin¹, Abdul Fattah¹, I. Nyoman Widiarta¹, Susilawati¹, Ayyub Ar Rahman^1*, Dwi P. Widiastuti¹, Twenty Liana¹, Muhamad Hidayanto¹, Khojin Supriadi¹, Sri Wahyuni Budiarti¹, M. Sudjak Saenong¹, Abdi Negara¹, Asni Ardjanhar¹, Rahmi H², Muh. Asaad², Entis Sutisna³, Ida Andriani⁴, Amiruddin Syam⁵, La Karimuna⁶, Robiatul Adawiyah⁶

¹Research Center for Food Crops, National Research and Innovation Agency, Raya Bogor St. Km. 46, Cibinong 16911, West Java, Indonesia

²Research Center for Horticulture, National Research and Innovation Agency, Raya Bogor St. Km. 46, Cibinong 16911, West Java, Indonesia

³Research Center for Social Welfare, Village, and Connectivity, Research Organization for Governance, Economy, and Community Welfare, St. Gatot Subroto, No. 10. Indonesia

⁴Research Center for Behavioral and Circular Economic, Research Organization for Governance, Economy, and Community Welfare, St. Gatot Subroto, No. 10. Indonesia

⁵Research Center for Macroeconomics and Financial, Research Organization for Governance, Economy, and Community Welfare, St. Gatot Subroto, No.10. Indonesia

⁶Lecturer at the Department of Agrotechnology, Faculty of Agriculture, University of Halu Oleo, Kendari, Southeast Sulawesi Province, Indonesia

 

*Corresponding author’s email: ayyu002@brin.go.id

Received: 27 February 2026 / Revised: 22 June 2026 / Accepted: 28 June 2026 / Published Online: 08 July 2026

 

Abstract

 

Plant characteristics, genetic diversity, and heritability are some of the factors that influence rice growth and production. This study aims to determine the physical characteristics and the relationship between genotype variants, heritability tests, and genetic progress that can contribute to rice production in lowland irrigated rice fields. This study was conducted from October 2022 to March 2023 in North Buton Regency, Southeast Sulawesi. The design used in this study was a Randomized Block Design with 7 varieties and 3 replications. The research data were analyzed based on the procedures of variance, genetic variance, heritability, agromorphological characteristics, partial correlation, and cross tests. The results obtained showed that the highest plant height characteristics were found in Ciherang (110 cm), the highest plant age was found in Ciherang (120 days). The characteristics of the 7 varieties tested, lodging properties, 57.14% were somewhat resistant to lodging and 42.86% were resistant to lodging. Pest resistance properties, tungro resistance (8.04%), resistance to brown planthopper (57.14%), and resistance to leaf blight (85.71%). Furthermore, regarding the correlation relationship, dry grain yield is positively correlated with the number of productive tillers, plant height, panicle length, grain weight, number of empty grains, full grains, and weight per 1000 grains. The genetic variation values ​​of plant height, number of panicles, grain weight, and weight per 1000 grains are higher in the Inpari-7, Inpari-11, Inpari-13, Inpari-14, Inpari-15, Inpari-20 varieties. The highest dry grain yield is found in Inpari-13, Inpari-15, and Inpari-20 compared to Ciherang.

 

Keywords: Rice variety, Low land rice, Characteristics, Genetic diversity, Heritability, Grain yield

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