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"net-like cracking pattern"

New Cultivar Developed
쓰러짐과 불마름병에 강한 아주까리콩 ‘까리1호’
Lodging and Bacterial Pustule Resistant Soybean Cultivar ‘Kkari1ho’ with a Net-Like Cracking Seed Coat
Jihee Park, Jeong Hyun Seo, Beom Kyu Kang, Jun Hoi Kim, Su Vin Heo, Won Young Han, Myoung Hee Lee, Ga Eun Kim, Tae Joung Ha, Jung Sook Sung, Ki Young Kim
Korean. J. Breed. Sci. 2026;58(2):209-217.   Published online June 1, 2026
DOI: https://doi.org/10.9787/KJBS.2026.58.2.209
‘Kkari1ho’ is a net-like, cracking-patterned seed-coated soybean cultivar developed from a crossing of ‘Cheongja3ho’ and ‘IT105279 (landrace)’ in 2009. The F1 and F2 populations were grown for two years, and promising lines were selected using the pedigree method from F3 to F5. A preliminary yield trial (PYT) and an advanced yield trial (AYT) were conducted from 2016 to 2017, and a regional yield trial (RYT) was conducted in seven regions from 2018 to 2020. ‘Kkari1ho’ is determinate, has an oval leaflet shape, purple flowers, and net-like cracking-patterned seeds. The flowering and maturation dates were August 3 and October 23, respectively. For quantitative characteristics, ‘Kkari1ho’ had a smaller seed weight (32.7 g/100 seeds), while its plant height and first pod height were similar to those of ‘Cheongja3ho.’ While ‘Kkari1ho’ was highly resistant to lodging under standard field conditions, its lodging resistance tended to decrease in high-density plots. Regarding pod shattering, ‘Kkari1ho’ exhibited higher resistance than ‘Cheongja3ho’ in both RYT field and indoor tests. ‘Kkari1ho’ showed comparable resistance to bacterial pustule to that of ‘Cheongja3ho’ in both field and artificial inoculation tests. In contrast, its resistance to soybean mosaic virus (G6H strain) was lower in inoculation tests but comparable in field tests. The mean yield of ‘Kkari1ho’ in the RYT was 252 kg/10a, which was a 4% higher mean yield across the region than that of ‘Cheongja3ho.’ ‘Kkari1ho’ is expected to replace landraces due to its resistance to lodging and bacterial pustule (Registration number: 9450).
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