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New Cultivar Developed

가뭄에 잘 견디고 감자역병에 강한다수성 감자 ‘대광’

박영은1,*, 장동칠2, 임주성2, 이영규1, 최장규1, 진용익2, 조지홍1, 조광수3

‘Daegwang’, a High Yielding Potato Variety with Resistance to Late Blight and Drought

Korean Journal of Breeding Science 2020;52(3):272-278.
Published online: September 1, 2020

1국립식량과학원 고령지농업연구소

2농촌진흥청

3국립식량과학원 남부작물부

1Highland Agriculture Research Institute, National Institute of Crop Science, RDA, Pyeongchang 25342, Republic of Korea

2Rural Development Administration, Wanju 55365, Republic of Korea

3Department of Southern Area Crop Science, National Institute of Crop Science, RDA, Miryang 50424, Republic of Korea

*Corresponding Author (E-mail: papalove@korea.kr, Tel: +82-33-330-1600, Fax: +82-33-1519)
• Received: June 19, 2020   • Revised: June 29, 2020   • Accepted: July 21, 2020

Copyright © 2020 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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Citations

Citations to this article as recorded by  Crossref logo
  • Mangang, a Potato Variety with Good Chipping Quality and Late Blight Resistance
    Young-Eun Park, Jang-Gyu Choi, Kwang-Soo Cho, Ji-Hong Cho, Hong-Sik Won, Young-Gyu Lee, Jeom-Soon Kim, Yong-Ik Jin, Ju-Sung Im, Dong-Chil Chang
    Korean Journal of Breeding Science.2023; 55(2): 172.     CrossRef

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‘Daegwang’, a High Yielding Potato Variety with Resistance to Late Blight and Drought
Korean. J. Breed. Sci.. 2020;52(3):272-278.   Published online September 1, 2020
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Korean. J. Breed. Sci.. 2020;52(3):272-278.   Published online September 1, 2020
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‘Daegwang’, a High Yielding Potato Variety with Resistance to Late Blight and Drought
Image Image Image Image
Fig. 1 Pedigree of ‘Daegwang’.
Fig. 2 Parentage of ‘Daegwang’
Fig. 3 Comparison of tuber and flower characteristics of ‘Daegwang’ (left) and ‘Sumi’ (right).
Fig. 4 Comparison of tolerance to drought of Daegwang (left) and Sumi (right) in the natural cultivating field in 2015.
‘Daegwang’, a High Yielding Potato Variety with Resistance to Late Blight and Drought

Major characteristics of plant and tuber of ‘Daegwang’.

Variety Plant Tuber Maturity
Growth habit Flower color Shape Skin color Flesh color Eye depth
Daegwang Erect White Short-oval Yellow White Shallow Medium
Sumi Semi-erect Purple Short-oval Yellow White Mid Early

Resistance level to potato late blight.

Year Variety Natural infection in field Inoculation


AUDPCz rAUDPCy Responsex response
2013 Daegwang 731.2 0.6 R MR
Sumi 1126.5 0.9 S S
2014 Daegwang 297.5 0.2 R R
Sumi 1020.8 0.7 S S

Resistance level to potato early blight evaluated in 2015.

Variety Incidence rate (%) Incidence indexz Response
Daegwang 100.0 2.1 R
Sumi 100.0 6.2 S

Field resistance to major potato viruses.

Year Variety Infected rates with virus (%) Response

PVY PVX PLRV
2013 Daegwang 90.0 0.0 0.0 S
Sumi 100.0 0.0 0.0 S
2014 Daegwang 58.3 0.0 0.0 S
Sumi 60.0 0.0 0.0 S
2015 Daegwang 60.0 0.0 0.0 S
Sumi 59.1 0.0 0.0 S
Average Daegwang 69.4 0.0 0.0 S
Sumi 73.0 0.0 0.0 S

Resistance response to common scab in natural infected test field.

Year Variety Rates of diseased tubers (%)z Scab severity
(%)y
Rates of marketable tuber (%)x Response
2013 Daegwang 100.0 53.6 21.6 S
Sumi 98.3 31.6 74.0 MR
2014 Daegwang 74.4 20.8 88.8 MR
Sumi 73.4 19.5 96.4 MR
2015 Daegwang 35.5 8.9 100.0 S
Sumi 14.4 3.6 100.0 R
Average Daegwang 70.0 27.8 70.1 S
Sumi 62.0 18.2 90.1 MR

Average tuber yield across four field trial locations from 2013 to 2015.

Year Variety Mean tuber yield (MT/ha) Average


Naju Cheongju Gangneung Pyeongchang Yeild (MT/ha) Index
2013 Daegwang 46.1 24.6 41.9 41.3 38.5 112.2
Sumi 45.5 22.7 43.0 26.1 34.3 100.0
LSD 0.05 5.70 2.33 3.32 2.88
2014 Daegwang 29.5 16.4 36.2 46.5 32.2 96.4
Sumi 32.4 16.2 37.9 47.0 33.4 100.0
LSD 0.05 11.49 ns 6.83 5.60
2015 Daegwang 33.5 15.5 31.7 45.5 31.5 110.1
Sumi 20.3 15.1 28.2 50.6 28.6 100.0
LSD 0.05 2.28 ns 1.92 3.22
Average Daegwang 36.3 18.8 36.6 44.4 34.1 106.2
Sumi 32.8 18.0 36.4 41.2 32.1 100

Frequency of physical defects in potato tubers investigated at four field trial locations for three years from 2013 to 2015.

Variety Internal defects (%) External defects (%)
Hollow heart Internal brown spot Malformation Crack
Daegwang 0.1 0.1 7.6 3.1
Sumi 0.1 0.1 8.3 0.5

Average dry matter content for three years at regional yield trial and taste characteristics of boiled potatoes.

Variety Dry matter (%) Starch (%) Perfumez Mealinessy Texture Preference
Daegwang 16.8 18.1 3.6±0.7x 3.6±0.8 3.3±0.6 3.5±0.5
Sumi 18.7 19.8 3.3±0.5 2.7±0.6 3.5±0.5 3.2±0.6
Table 1 Major characteristics of plant and tuber of ‘Daegwang’.
Table 2 Resistance level to potato late blight.

zAUDPC: area under the disease progress curve

yrAUDPC: relative area under the disease progress curve

xS: susceptibility, MR: moderately resistance, R: resistance

Table 3 Resistance level to potato early blight evaluated in 2015.

zIncidence index: 0(no lesion), 1(lesion area is below 5%), 2(lesion area is below 5~10%), 3(lesion area is below 10~20%), 4(lesion area is above 20%).

Table 4 Field resistance to major potato viruses.
Table 5 Resistance response to common scab in natural infected test field.

zRates of diseased tubers=(No. of diseased tubers/No. of total tubers investigated)×100.

ySeverity=[(0N)+(1N)+(2N)+(3N)+(4N)/No. of total tubers×4)]×100. Digit and ‘N’ indicate incidence index and tuber number, respectively. Incidence index: 0(no lesion), 1(lesion area is below 5%), 2(lesion area is below 5~10%), 3(lesion area is below 10~20%), 4(lesion area is above 20%).

xRates of marketable tuber=(tuber weight below 5% of lesion area/total tuber weight)×100.

Table 6 Average tuber yield across four field trial locations from 2013 to 2015.
Table 7 Frequency of physical defects in potato tubers investigated at four field trial locations for three years from 2013 to 2015.
Table 8 Average dry matter content for three years at regional yield trial and taste characteristics of boiled potatoes.

zPerfume, Texture, Preference : 1=very bad, 5=very good,

yMealiness : 1=very sticky, 5=very mealy

xMean ± SD