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벼흰잎마름병 저항성 고품질 중만생 벼 ‘만백’

Bacterial Blight Resistant Mid-late Maturing Rice ‘Manbaek’ with High Grain Quality

Korean Journal of Breeding Science 2017;49(3):235-244.
Published online: August 31, 2017

1 농촌진흥청 국립식량과학원

1 National Institute of Crop Science, RDA, Wanju 55365, Korea

2 농촌진흥청 연구정책국

2 Research Policy Bureau, RDA, Jeonju 54875, Korea

*Corresponding Author (mayoe@korea.kr, +82-63-238-5216, +82-63-238-5205)
• Received: March 22, 2017   • Accepted: June 7, 2017

© Korean Society of Breeding Science. All rights reserved.

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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Bacterial Blight Resistant Mid-late Maturing Rice ‘Manbaek’ with High Grain Quality
Korean. J. Breed. Sci.. 2017;49(3):235-244.   Published online September 1, 2017
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Bacterial Blight Resistant Mid-late Maturing Rice ‘Manbaek’ with High Grain Quality
Image Image Image Image
Fig. 1 Genealogical diagram of ‘Manbaek’
Fig. 2 Pedigree diagram of ‘Manbaek’.
Fig. 3 Plant type at maturing stage (A) and grain shape of rough, brown, and milled rice (B).
Fig. 4 Resistance reaction of Manbaek, Nampyeong, and Jinbaek against bacterial blight races K1(HB1013 isolate), K2(HB1014), K3(HB1015), and K3a(HB1009) (A) and other16 Korean Xanthomonas oryzae pv. oryzae isolates (B). The White bar indicates 10 cm.
Bacterial Blight Resistant Mid-late Maturing Rice ‘Manbaek’ with High Grain Quality

Major agronomic traits and yield components.

Cultivar Heading date (mm.dd) Culm length (cm) Panicle length (cm) No. of panicles per hill No. of pikelets per panicle Ratio of ripened grain (%) 1,000-grain weight of brown rice (g)

Manbaek 8.19**z 71** 22* 13ns 106** 89.9ns 21.6ns
Nampyeong 8.14 78 20 14 95 87.0 21.6

zns, * and ** mean no significant, significant at p<0.05, and 0.01 by t-test, respectively

Response to physiological and abiotic stresses.

Cultivar Occurrence of wilting Leaf senescence at maturing Cold tolerancez Low tem. germinabilityy (%) Lodging Viviparous germinationx (%)


Seedling stage (1-9) Heading delay (day) Grain fer tility(%) Phenotypic acceptability (1-9) Breaking strength (g) Index

Manbaek Tolerance Late 5 12 29nsw 7 80** 1,753 94 3.4ns
Nampyeong Tolerance Late 5 10 32 7 42 1,457 109 3.0

zCold tolerance was evaluated at cold water (17°C) irrigation nursery in Chuncheon substation, NICS

yGermination rate for 15 days at 13°C

xGermination rate for 7 days at 25°C

wns and ** mean no significant and significant at p<0.01 by t-test, respectively

Resistance reaction to bacterial blight.

Cultivar Resistance gene Race Resistance at field nursery Reaction against 16 isolates (cm)

K1 K2 K3 K3a

Manbaek Xa3+xa5 Rz R R R R 3.5±1.49ybx
Nampyeong unknown S S S S S 16.0±2.65a
Jinbaek Xa3+xa5 R R R R R 2.8±1.59b

zR: Resistant, S: Susceptible

yAverage lesion length was measured by 3 leaves mostly inoculated.

xMeans with same letter are not significantly different at p<0.05 (ANOVA followed by DMRT)

Resistance reaction to blast disease.

Cultivar Reaction to leaf blast at blast nursery (0-9) Reaction to neck blast at field test


No. of tested sites (14) Rate of infected panicles (%)

Rz M S Mean Iksan Milyang Icheon Jinju

Manbaek 2 4 8 5.6 19.3 0.9 0.0 0.2
Nampyeong 4 9 1 3.5 0.0 0.0 0.0 0.0

zR: Resistant, M: moderately resistant, S: Susceptible

Reaction to virus disease and insect pests.

Cultivar Virus diseases (%) Resistance to insects


Stripe Dwarf Black streaked dwarf BPHz SBPH

Manbaek Ry (4.4) S (73.3) S (86.8) S S
Nampyeong R (2.2) R (26.7) S (79.5) S S

zBPH: brown planthopper, SBPH: small brown planthopper

yR: Resistant, S: Susceptible

Characteristics related to grain shape and grain quality.

Cultivar Brown rice Translucency (1-9) White core/belly (0-9) Alkali digestive value (1-7) Protein content (%) Amylose content (%) Palatability of cooked rice (-3-+3)

Length (mm) Width (mm) L/W ratio

Manbaek 5.02*z 2.82ns 1.78ns 1 0/0 6.6 5.9ns 20.4* 0.22
Nampyeong 4.95 2.82 1.75 1 0/0 6.4 6.8 18.8 -0.05

zns and * mean no significant and significant at p<0.05 by t-test, respectively

Characteristics related to milling quality.

Cultivar Milling recovery ratio (%) Head rice milling recovery ratio (%)

Brown/rough Milled/brown Milled/rough Head rice

Manbaek 82.9 91.5 75.9 95.4 72.4
Nampyeong 81.3 90.5 73.5 98.7 72.5

Yield summary of local adaptability test.

Culture season Region No. of tested sites Milled rice (MT/ha) Index

Manbaek (A) Nampyeong (B) A/B

Ordinary planting West-southern coast 3 5.13 5.18 99
Honam plain 5 5.28 5.37 98
Yeongnam plain 4 5.65 6.02 94

Mean 12 5.37nsz 5.54 97

Double cropping Honam plain 1 5.69 5.63 101
Yeongnam plain 1 5.77 5.82 99

Mean 2 5.73ns 5.72 100

zns means no significant by t-test

Table 1 Major agronomic traits and yield components.

ns, * and ** mean no significant, significant at p<0.05, and 0.01 by t-test, respectively

Table 2 Response to physiological and abiotic stresses.

Cold tolerance was evaluated at cold water (17°C) irrigation nursery in Chuncheon substation, NICS

Germination rate for 15 days at 13°C

Germination rate for 7 days at 25°C

ns and ** mean no significant and significant at p<0.01 by t-test, respectively

Table 3 Resistance reaction to bacterial blight.

R: Resistant, S: Susceptible

Average lesion length was measured by 3 leaves mostly inoculated.

Means with same letter are not significantly different at p<0.05 (ANOVA followed by DMRT)

Table 4 Resistance reaction to blast disease.

R: Resistant, M: moderately resistant, S: Susceptible

Table 5 Reaction to virus disease and insect pests.

BPH: brown planthopper, SBPH: small brown planthopper

R: Resistant, S: Susceptible

Table 6 Characteristics related to grain shape and grain quality.

ns and * mean no significant and significant at p<0.05 by t-test, respectively

Table 7 Characteristics related to milling quality.
Table 8 Yield summary of local adaptability test.

ns means no significant by t-test