New highly productive rice variety Admiral

Improving the resistance of agricultural crops to diseases is an urgent issue. Breeding work was conducted to develop a middle-maturing, highly productive rice variety resistant to blast. The purpose of the current study was to develop a highly productive, middle-maturing rice variety with high nutritional value, resistant to blast, and suitable for cultivation in the Rostov Region and other irrigated areas. The process took place from 2013 to 2024 in the fields of the ExF “Proletarskoye” in the Rostov Region. There were used intervarietal crossing methods, individual and mass selection of plants with the most grain-rich panicles. The variety Admiral was developed in 2013 due to hybridization of the highly productive variety Kuboyar with the line Il.28, which possessed three blast-resistant genes. Between 2015 and 2018, there were conducted multiple individual selections from hybrid populations. During the final stages of selection, the best rice line Don 7805 was selected and tested in control and competitive nurseries from 2020 to 2024. The weather conditions during rice growth and development in the competitive variety testing were favorable for large productivity. The variety Admiral was sent to the State Variety Testing in 2025. This middle-maturing variety matures in 120 days after watering the field. The plant habit is erect, compact, with erect leaves and panicles. Plants reach 90-95 cm in height, 5 cm shorter than the standard Yuzhanin. Panicle length is 16 cm, shorter than that of Yuzhanin. Panicles have an average of 128 spikelets, with some having up to 170. The kernels are oval (8.4 mm in length and 3.3 mm in width). 1000 kernels have an average weight of 30.2 g. Grain hardiness is 94.3 g, hull content is 17.8 g, kernel yield is 72.0 g, and the whole kernel yield is 91.2 g. In the field, the variety demonstrates resistance to lodging, shattering, and blast. Productivity in the competitive variety testing (2023–2024) averaged 7.64 t/ha, exceeding the standard Yuzhanin by 1.50 t/ha.

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