Agronomic character and productivity of improved Acehnese rice lines under upland cultivation system

Abstract

Abstract The improvement of Sigupai has been conducted by inserting Sd-1 gene into its progenies resulting in a shorter lifespan and higher productivity. Through this improvement process, a number of new lines have been produced. However, the adaptataion ability of these lines when cultivated under an upland cultivation system is unclear. The purpose of this research is to determine the agronomic character and productivity of these improved lines under upland cultivation system. The research was conducted at Experimental Garden and Plant Breeding Laboratory, Agriculture Faculty, Universitas Syiah Kuala from March to July 2023. The experimental design used in the research was a non-factorial randomized block design (RBD) consisting of 7 new improved lines, T5.3.12.1.3.12; T5.3.12.1.5.2; T9.1.7.6.9.12; T9.6.1.6.12.1; T9.8.8.3.5.9; T29.2.11.10.7.2; T29.8.5.2.12.12 with 3 replications. The parameters observed were plant height, number of tillers, panicle length, flowering time, harvest time, the weight of filled grains per hill, the weight of 1000 grains, and estimated production per hectare. Research results showed that the lines had significant differences on plant height at 4,6, and 8 week after transplanting (WAT) and at harvesting time, the number of tillers at 4,6, and 8 WAT and weight of 1000 grains. The lines T5.3.12.1.3.12 and T5.3.12.1.5.2 were prospective for upland cultivation with a plant height <110 cm, harvesting time <125 day after sowing (DAS), and estimated production 5.28- 6.03 tons ha−1.