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New Cultivar Developed

조생 종실용 옥수수 단교잡 신품종 ‘신황옥2호’

손범영1,*, 김정태2, 이진석1, 배환희1, 고영삼1

‘Sinhwangok2’: A Single Cross Maize Hybrid for Early-Maturing Grain Use

Korean Journal of Breeding Science 2022;54(3):211-214.
Published online: September 1, 2022

1국립식량과학원

2농촌진흥청

1National Institute of Crop Science, RDA, Suwon 16429, Republic of Korea

2RDA, Jeonju 54875, Republic of Korea

*Corresponding Author (E-mail: sonby@korea.kr, Tel: +82-31-695-4039, Fax: +82-31-695-4029)
• Received: May 17, 2022   • Revised: May 29, 2022   • Accepted: May 31, 2022

Copyright © 2022 by the Korean Society of Breeding Science

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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  • Selection of Forage Corn Varieties Adapted to High Latitude (The South of Mt. Suyang)
    Jae-Han Son, Hwan-Hee Bae, Young Sam Go, Jun-Young Ha, Bonil Ku, Man-Kee Baek, Jeong-Ju Kim, Beom-Young Son, Tae-Wook Jung
    Journal of The Korean Society of Grassland and Forage Science.2023; 43(4): 216.     CrossRef

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‘Sinhwangok2’: A Single Cross Maize Hybrid for Early-Maturing Grain Use
Korean. J. Breed. Sci.. 2022;54(3):211-214.   Published online September 1, 2022
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‘Sinhwangok2’: A Single Cross Maize Hybrid for Early-Maturing Grain Use
Korean. J. Breed. Sci.. 2022;54(3):211-214.   Published online September 1, 2022
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‘Sinhwangok2’: A Single Cross Maize Hybrid for Early-Maturing Grain Use
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Fig. 1 Breeding procedure of ‘Sinhwangok2’ PYT (preliminary yield trial), AYT (advanced yield trial), RYT (regional yield trial).
‘Sinhwangok2’: A Single Cross Maize Hybrid for Early-Maturing Grain Use

Agronomic characteristics of ‘Sinhwangok2’

Hybrid Days to silking (days) Plant height (cm) Ratioz (%) Lodging (1~9) Ear per 100 plants (No.) Ear length (cm) 100 seeds weight (g)
Sinhwangok2 72b 243a 49a 1.3a 100a 19.5a 30.8a
Jangdaok 77a 262a 49a 1.1a 94a 21.6a 30.5a

Resistance to disease of ‘Sinhwangok2’

Hybrid Disease resistance Corn borer (0~9)
Southern leaf blight (0~9) Northern leaf blight (0~9)
Sinhwangok2 MR (5.5a) R (1.0a) MR (6.2a)
Jangdaok MR (4.2a) R (1.3a) MR (5.5a)

Grain yield of ‘Sinhwangok2’ in preliminary and advanced yield trial at 2014 to 2015 in Suwon, NICS

Hybrid Grain yield (ton/ha) Index (%)
2014 2015 Mean
Sinhwangok2 11.61 7.97 9.79a 125
Jangdaok 9.09 6.59 7.84b 100

Grain yield of ‘Sinhwangok2’ in regional yield trial from 2016 to 2018

Location Sinhwangok2 (ton/ha) Jangdaok (ton/ha)
2016 2017 2018 Mean 2016 2017 2018 Mean
Suwon 10.46 9.58 7.79 9.28 9.98 6.46 6.58 7.67
Hongcheon 11.58 10.34 8.57 10.16 10.66 8.25 7.71 8.87
Daegu 8.38 10.41 7.54 8.78 10.53 9.43 5.37 8.44
Mean 10.14 10.11 7.97 9.41a (113) 10.39 8.05 6.55 8.33a (100)

F1 Seed production trial of ‘Sinhwangok2’ in Yeongwol

Planting rate (♀:♂) Inbred Silking date Pollen dispersal period Ear length (cm) Fertile kernels (%) F1 seed yield (ton/ha)
4 : 1 KS214 (♀) July 13 - 14.1 91 2.36
KS215 (♂) - July 13~17 - - -
Table 1 Agronomic characteristics of ‘Sinhwangok2’

zEar height ratio=ear height/plant height×100

Values within a column followed by the same letter are not significantly different at the 0.05 level

Table 2 Resistance to disease of ‘Sinhwangok2’

R: Resistance, MR: Moderate Resistance

Values within a column followed by the same letter are not significantly different at the 0.05 level

Table 3 Grain yield of ‘Sinhwangok2’ in preliminary and advanced yield trial at 2014 to 2015 in Suwon, NICS

Values within a column followed by the same letter are not significantly different at the 0.05 level

Table 4 Grain yield of ‘Sinhwangok2’ in regional yield trial from 2016 to 2018

Values within a row followed by the same letter are not significantly different at the 0.05 level

Table 5 F1 Seed production trial of ‘Sinhwangok2’ in Yeongwol