Late-Maturing, Low Amylose Rice Variety Jinsang 2 with a Medium to Short Culm

et al. 2018

Hyowon6, a mid-late maturing, good eating quality rice variety with multi-resistance, was developed by the rice breeding team of Pusan National University in 2013. This variety was derived from a cross between Hwayeong (as a multi-resistant parent) and Koshihikari (as a good eating quality parent). Selection by the pedigree breeding method was carried out until the F8 generation. A promising line, JS14-12-36-8-5-3-1-1-1, was developed and designated as HY103 in 2013. This variety headed on August 22, which was 11 days later than that of Hwayeong. The culm length and panicle length of Hyowon6 was 85.7 cm and 21.1 cm, respectively. The number of panicles per hill was 14.5 and the number of grains per panicle was 101.7. The ratio of ripened grain was approximately 92% and the 1,000-grain weight was approximately 21.36 g for brown rice, which were similar to those of Hwayeong. Hyowon6 was moderately resistant to lodging and also to neck blast, leaf blight, and stripe virus. The glossiness value of Hyowon6 was 83, which was considerably higher than that of Hwayeong.

‘Hyowon6’, a Mid-Late Maturing Rice Variety with High Quality

San

et al. 2018

An Early Maturing and Low Amylose Rice Variety ‘Gawagi1’ Adaptable to the Northern Regions of Gyeonggido Province, South Korea

Won

Lee

et al. 2019

Gawagi1' is an early maturing, low amylose rice variety with a medium to short culm, developed by Gyeonggi-Do Agricultural Research & Extension Services, Hwaseong, Korea in 2016. 'Gawagi1' was derived from the cross between 'Baegjinju' and 'Sangmibyeo' in 2004. Heading date was 4th of August 15 day earlier than 'Baegjinju' in Gyeonggido. The culm length was 67 cm. It had 15 panicles per hill and 104 spikelets per panicle. It is a medium-grain variety whose 1,000 grains weight of brown rice is 19.3 g. The protein content of milled rice was 6.3%, which is higher than that of 'Baegjinju' and its amylose content was 8.2% which is lower than that of 'Baegjinju'. Its milling ratio is 75.5%, which is higher than that of 'Baegjinju'. The yield of milled rice was 4.99 MT/ha under the standard cultivation practices at the local adaptability tests in 3 regions from 2014 to 2016. 'Gawagi1' is highly adaptable to Gyeonggido, especially to the northern region of Han River. (Registration No. 7280)

Golden queen 3: A High-quality Rice Variety with Low Amylose Contents and Aroma

Lee

Park

et al. 2021

Golden queen 3', an aromatic rice variety, was developed by Seedpia inc. (Suwon, Korea) breeding company in 2014. This cultivar was derived from a cross between 'HJ-11', a high-yield, aromatic line, and 'JCH33M-15-1-9-1', which has a low amylose content. During the F3-F8 generation, breeding lines were selected using a pedigree breeding method. The most promising line (JS9-3-73-15-5-1-5-3-1-1) was advanced and named 'SP005' in 2013. This variety was headed on August 13, two days later than 'Hwayeong' in the 'in middle plane' is commonly used to distinguish rice cultivation areas in Korea, so I think it's no problem to the understanding for readers (including farmers). The culm and panicle lengths of this variety were 75.7 cm and 20.1 cm, respectively. It has approximately 14.7 tillers per hill and 104.8 spikelets per panicle, and the 1000-grain weight was 21.8 g. The yield performance was 5.47 MT/ha in the local adaptability test, and the amylose content of this variety was 12.5%. 2-Acetyl-1-pyrroline was detected as the major volatile ingredient in aromatic rice, and a 1 bp insertion on the 14th exon (badh2.7 allele) was identified in the Badh2 gene. (Registration No. 7308).