1농촌진흥청 국립원예특작과학원 원예작물부 채소과
2농촌진흥청 국립원예특작과학원 기획조정과
1Vegetable Research Division, Dep. of Horticultural Crop Research, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Republic of Korea
2Planning and Coordination Division, National Institute of Horticultural and Herbal Science, RDA, Wanju 55365, Republic of Korea
Copyright © 2022 by the Korean Society of Breeding Science
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| Accession | Hypocotyl length (mm) | Width of hypocotyl (mm) | Width of cotyledon (mm) | Length / width of cotyledon | ||||
|---|---|---|---|---|---|---|---|---|
| IT188208 | 57.7±9.4 | c-gz | 2.1±0.4 | c-l | 27.5±2.9 | e-l | 1.6±0.1 | e-m |
| IT199860 | 70±7.2 | bc | 2±0.3 | e-l | 29.6±4.2 | c-h | 1.7±0.1 | b-f |
| PI189225-1 | 65.7±5 | b-d | 2.5±0.2 | b-e | 32.5±3.9 | b-e | 1.6±0.2 | d-l |
| PI189225-5 | 49.4±15.7 | f-m | 2.6±0.5 | b-d | 21.7±6.7 | m-r | 1.4±0.2 | mn |
| PI203551-1 | 63.8±5.7 | b-e | 2±0.2 | e-l | 28.1±6.6 | d-l | 1.5±0.2 | g-m |
| PI203551-6 | 45.1±6.2 | g-o | 1.8±0.3 | i-m | 25.4±3.8 | h-o | 1.5±0.1 | h-m |
| PI225557 | 37.8±12.7 | l-q | 1.7±0.3 | k-m | 21.4±2.2 | n-r | 1.7±0.1 | c-h |
| PI254743-1 | 41±6.5 | k-q | 2.3±0.3 | b-h | 29.4±1.9 | c-i | 1.8±0.1 | a-e |
| PI254743-5 | 44.1±5.3 | h-p | 2.2±0.3 | b-k | 31.9±4.5 | b-f | 1.5±0.1 | f-m |
| PI270140-1 | 34.9±15.8 | n-s | 1.9±0.2 | f-l | 20.4±3.9 | o-r | 1.6±0.2 | f-m |
| PI270140-8 | 36.3±5.4 | m-r | 2±0.4 | e-l | 26.8±3 | f-n | 1.4±0.1 | i-m |
| PI271769 | 32.4±7.9 | o-s | 2±0.3 | e-l | 23±2.9 | l-p | 1.6±0.1 | d-i |
| PI271778 | 35.4±5.1 | n-r | 2±0.3 | e-l | 25.4±1.9 | h-o | 1.7±0.1 | b-h |
| PI278057-1 | 39.5±10.8 | l-q | 2.3±0.7 | b-j | 24±2.8 | i-p | 1.6±0.1 | d-j |
| PI278057-8 | 48±8.8 | f-n | 2.5±0.1 | b-e | 29.5±0.5 | c-i | 1.6±0.1 | f-m |
| PI296341-5 | 23.5±1.5 | rs | 1.7±0 | lm | 19±1 | p-r | 1.9±0.1 | a |
| PI296341-6 | 29.3±11.4 | q-s | 1.9±0.1 | g-l | 17.7±1.9 | qr | 1.8±0.2 | a-c |
| PI299379-1 | 41.3±6.3 | j-q | 2.6±0.2 | bc | 34.2±1.8 | bc | 1.6±0.2 | e-m |
| PI299379-13 | 38.7±8.8 | l-q | 2.3±0.3 | b-i | 26.6±4.9 | f-n | 1.6±0.2 | d-l |
| PI299379-3 | 21.8±10.2 | s | 1.8±0.2 | j-m | 23±4.2 | l-p | 1.6±0.1 | e-m |
| PI357697-4 | 30.3±16.3 | p-s | 2±0.3 | e-l | 22±3.7 | m-q | 1.4±0.1 | l-n |
| PI357697-8 | 54.8±6 | d-i | 2.6±0.3 | bc | 28.6±4.8 | d-k | 1.6±0.1 | d-i |
| PI378617-1 | 41.4±7.8 | i-q | 2.4±0.3 | b-g | 28.6±2.4 | d-k | 1.9±0.1 | a |
| PI378617-3 | 29.4±3.5 | q-s | 2.1±0.3 | c-l | 25.8±1.7 | g-o | 1.8±0.1 | a-d |
| PI385964-1 | 35.7±10.4 | m-r | 2.2±0.5 | b-j | 21.7±1.2 | m-r | 1.6±0.1 | d-i |
| PI385964-5 | 35.6±3.6 | m-r | 2.2±0.4 | b-j | 26.9±2.5 | f-m | 1.7±0.1 | b-g |
| PI457916-2 | 40.9±5.3 | k-q | 3.2±0.4 | a | 33.3±2.5 | b-d | 1.6±0.1 | d-l |
| PI457916-5 | 36.7±3.3 | m-r | 2.7±0.2 | b | 31.9±4.3 | b-f | 1.6±0.1 | e-m |
| PI482318-2/3 | 31.9±6.2 | o-s | 2.3±0.4 | b-h | 26.3±6.1 | g-n | 1.4±0.2 | l-n |
| PI482318-1 | 42.3±9.2 | i-q | 2.4±0.3 | b-g | 27±3.1 | f-m | 1.4±0.1 | j-n |
| PI482322-2 | 51.5±4.2 | e-l | 2±0.3 | e-l | 27±1.4 | f-m | 1.4±0.1 | k-n |
| PI482322-4 | 56.3±6.5 | d-h | 1.9±0.2 | g-m | 23.4±2.4 | j-p | 1.5±0.1 | i-m |
| PI487458-1 | 66±11.5 | b-d | 2±0.3 | e-l | 27.6±2.9 | e-l | 1.6±0.1 | f-m |
| PI487458-6 | 70.9±10.2 | b | 2±0.4 | e-l | 28±3 | d-l | 1.6±0.1 | e-m |
| PI494527 | 65.8±5.2 | b-c | 2.3±0.2 | b-i | 31.1±3 | c-g | 1.6±0.1 | d-k |
| PI500303 | 71.5±1.5 | b | 3.2±0.3 | a | 35.5±0.5 | b | 1.6±0.1 | f-m |
| PI500336-1 | 43.5±6.7 | h-p | 2.3±0.2 | b-j | 32.5±1.4 | b-e | 1.5±0.1 | i-m |
| PI500336-5 | 41.6±7.1 | i-q | 2±0.3 | e-l | 28.1±4.1 | d-l | 1.5±0.1 | f-m |
| PI512342-1 | 56.1±10.6 | d-h | 2.3±0.3 | b-i | 25.3±1.9 | h-o | 1.6±0.1 | e-m |
| PI512342-4 | 58.7±9 | b-f | 1.8±0.3 | h-m | 19.4±1.7 | p-r | 1.6±0.1 | e-m |
| PI512833 | 40±0 | k-q | 2.4±0 | b-g | 20±0 | p-r | 1.5±0 | i-m |
| PI525096-1 | 55.8±10.6 | d-h | 2.5±0.3 | b-f | 28.8±3.2 | d-j | 1.5±0.2 | f-m |
| PI525096-4 | 53.6±11.3 | d-k | 2.5±0.4 | b-f | 28.9±5 | d-i | 1.6±0.2 | f-m |
| PI532811 | 100±0 | a | 3.6±0 | a | 42±0 | a | 1.2±0 | n |
| PI593358 | 40.1±10.2 | k-q | 2.3±0.3 | b-j | 29.4±3 | c-i | 1.6±0 | e-m |
| Choam | 54.7±8.9 | d-j | 2±0.2 | f-l | 16.8±1.8 | r | 1.6±0.1 | d-k |
| SugarBaby | 35±5.2 | n-r | 2.1±0.5 | d-l | 23.2±1.2 | k-p | 1.6±0.1 | e-m |
| CalhounGray | 40±14.6 | k-q | 2.3±0.6 | b-i | 25.6±4.4 | h-o | 1.6±0.1 | d-i |
| CharlestonGray | 41.9±15.5 | i-q | 1.9±0.4 | g-l | 24.1±2.9 | h-p | 1.6±0.1 | e-m |
| PI296341-FR | 24±3.2 | rs | 2.1±0.2 | c-l | 17.7±2.3 | qr | 1.5±0.2 | f-m |
| Speedkkul | 47.2±6.1 | f-n | 1.8±0.5 | h-m | 24.2±1.1 | h-p | 1.5±0 | g-m |
| Soknorankkul | 32.7±9.7 | o-s | 1.4±0.2 | m | 10.3±2.6 | s | 1.7±0.1 | b-h |
| Ojakgyo | 40.2±8.9 | k-q | 2.2±0.4 | b-k | 25.9±4.6 | g-n | 1.6±0.1 | e-m |
| Accession | Disease ratingz | Degree of resistancey | Accession | Disease rating | Degree of resistance | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | Mean | 0 | 1 | 2 | 3 | Mean | ||||
| IT188208 | 0 | 0 | 0 | 10 | 3.0 ax | S | PI457916-2 | 0 | 0 | 0 | 10 | 3.0 a | S |
| IT199860 | 6 | 0 | 0 | 3 | 1.0 c | R | PI457916-5 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI189225-1 | 1 | 0 | 0 | 9 | 2.7 a | S | PI482318-2/3 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI189225-5 | 0 | 0 | 1 | 9 | 2.9 a | S | PI482318-1 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI203551-1 | 0 | 0 | 0 | 7 | 3.0 a | S | PI482322-2 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI203551-6 | 0 | 0 | 0 | 10 | 3.0 a | S | PI482322-4 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI225557 | 0 | 0 | 0 | 6 | 3.0 a | S | PI487458-1 | 0 | 0 | 0 | 9 | 3.0 a | S |
| PI254743-1 | 0 | 0 | 0 | 10 | 3.0 a | S | PI487458-6 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI254743-5 | 0 | 0 | 0 | 10 | 3.0 a | S | PI494527 | 4 | 0 | 1 | 5 | 1.7 b | MR |
| PI270140-1 | 0 | 0 | 0 | 4 | 3.0 a | S | PI500303 | 0 | 0 | 0 | 3 | 3.0 a | S |
| PI270140-8 | 0 | 0 | 0 | 10 | 3.0 a | S | PI500336-1 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI271769 | 0 | 0 | 0 | 0 | -w | - | PI500336-5 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI271778 | 1 | 0 | 0 | 8 | 2.7 a | S | PI512342-1 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI278057-1 | 0 | 0 | 0 | 9 | 3.0 a | S | PI512342-4 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI278057-8 | 0 | 0 | 0 | 9 | 3.0 a | S | PI512833 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI296341-5 | 0 | 0 | 0 | 0 | - | - | PI525096-1 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI296341-6 | 4 | 0 | 0 | 1 | 0.6 c | R | PI525096-4 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI299379-1 | 0 | 0 | 0 | 10 | 3.0 a | S | PI532811 | 1 | 2 | 1 | 0 | 1.0 c | R |
| PI299379-13 | 0 | 0 | 0 | 10 | 3.0 a | S | PI593358 | 3 | 0 | 0 | 7 | 2.1 b | S |
| PI299379-3 | 0 | 1 | 0 | 9 | 2.8 a | S | Choam | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI357697-4 | 0 | 0 | 0 | 10 | 3.0 a | S | SugarBaby | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI357697-8 | 0 | 0 | 1 | 9 | 2.9 a | S | CalhounGray | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI378617-1 | 0 | 0 | 0 | 10 | 3.0 a | S | CharlestonGray | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI378617-3 | 0 | 0 | 0 | 10 | 3.0 a | S | PI296341-FR | 0 | 0 | 0 | 0 | - | - |
| PI385964-1 | 0 | 0 | 0 | 10 | 3.0 a | S | Speedkkul | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI385964-5 | 0 | 0 | 0 | 10 | 3.0 a | S | Soknorankkul | 0 | 0 | 0 | 7 | 3.0 a | S |
zDisease rating was measured by visual evaluation of seedling; 0=no wilting, 1=the lower leaves begins wilting, 2=more than 50% of plants are severely wilted, 3=plants are dead.
yDegree of resistance : R, resistant (disease rating [DR]=0-0.9); MR, moderately resistant (DR=1.0-1.9); S, susceptible (DR=2.0-3.0).
xThe same letters in the column denote no significant difference at p=0.01 by LSD test.
wNo germination until 10 days after sowing.
| Accession | No. of gall / plant | No. of egg mass / plant | Degree of resistancez | Accession | No. of gall / plant | No. of egg mass / plant | Degree of resistance |
|---|---|---|---|---|---|---|---|
| IT188208 | 147.0 o-t | 19.4 l-pz | MR | PI457916-2 | 13.2 t | 1.6 p | R |
| IT199860 | 187.2 m-s | 10.8 n-p | S | PI457916-5 | 12.6 t | 2.0 p | R |
| PI189225-1 | 267.0 h-p | 6.8 op | S | PI482318-2/3 | 172.8 n-s | 19.2 l-p | S |
| PI189225-5 | 136.6 p-t | 6.0 op | MR | PI482318-1 | 276.8 g-o | 15.4 m-p | S |
| PI203551-1 | 456.2 a-e | 76.8 c-f | S | PI482322-2 | 212.0 l-r | 94.6 bc | S |
| PI203551-6 | 240.4 j-q | 24.4 j-p | S | PI482322-4 | 208.8 l-r | 86.4 b-d | S |
| PI225557 | 117.8 q-t | 11.4 n-p | MR | PI487458-1 | 385.4 b-i | 11.2 n-p | S |
| PI254743-1 | 375.6 c-j | 39.0 h-m | S | PI487458-6 | 272.6 g-p | 21.8 k-p | S |
| PI254743-5 | 356.4 d-k | 46.4 g-k | S | PI494527 | 509.4 a-c | 6.6 op | S |
| PI270140-1 | 276.3 g-o | 23.3 k-p | S | PI500303 | 311.5 f-m | 5.0 p | S |
| PI270140-8 | 241.6 j-q | 59.6 e-h | S | PI500336-1 | 138.8 o-t | 6.4 op | MR |
| PI271769 | 378.0 c-j | 20.3 l-p | S | PI500336-5 | 139.2 o-t | 21.8 k-p | MR |
| PI271778 | 296.8 g-n | 5.6 op | S | PI512342-1 | 222.6 k-r | 19.8 l-p | S |
| PI278057-1 | 166.4 n-s | 35.2 h-n | S | PI512342-4 | 529.2 a | 38.4 h-m | S |
| PI278057-8 | 241.8 j-q | 38.6 h-m | S | PI512833 | 403.0 a-h | 64.6 d-g | S |
| PI296341-5 | 50.0 st | 2.0 p | R | PI525096-1 | 409.2 a-g | 82.2 b-e | S |
| PI296341-6 | 137.0 p-t | 41.0 g-l | MR | PI525096-4 | 232.0 k-q | 64.8 d-g | S |
| PI299379-1 | 150.8 o-t | 2.8 p | MR | PI532811 | 341.8 e-l | 8.6 op | S |
| PI299379-13 | 117.0 q-t | 6.8 op | MR | PI593358 | 91.4 r-t | 5.4 p | MR |
| PI299379-3 | 192.4 m-r | 8.2 op | S | Choam | 115.6 q-t | 8.8 op | MR |
| PI357697-4 | 163.8 n-s | 23.0 k-p | S | SugarBaby | 199.2 m-r | 30.8 i-o | S |
| PI357697-8 | 480.2 a-d | 165.8 a | S | CalhounGray | 437.8 a-f | 49.6 g-j | S |
| PI378617-1 | 170.6 n-s | 51.8 f-i | S | CharlestonGray | 183.0 m-s | 23.6 k-p | S |
| PI378617-3 | 253.0 i-q | 59.8 e-h | S | PI296341-FR | 88.0 r-t | 12.5 n-p | MR |
| PI385964-1 | 179.4 m-s | 9.2 op | S | Speedkkul | 517.8 ab | 22.4 k-p | S |
| PI385964-5 | 386.0 b-i | 106.2 b | S |
Watermelon germplasm for Fusarium wilt and root-knot nematode resistance used in this study.
| Accession | Taxonomy | Origin | Accession | Taxonomy | Origin |
|---|---|---|---|---|---|
| IT188208 | Citrullus amarus | Botswana | PI482318 | C. amarus | Zimbabwe |
| IT199860 | C. lanatus | Botswana | PI482322 | C. amarus | Zimbabwe |
| PI189225 | C. amarus | Democratic Republic of the Congo | PI487458 | C. lanatus | Venezuela |
| PI203551 | C. lanatus | United States | PI494527 | C. mucosospermus | Ogun, Nigeria |
| PI225557 | C. amarus | Zimbabwe | PI500303 | C. amarus | Zambia |
| PI254743 | C. mucosospermus | Senegal | PI500336 | C. lanatus | Zambia |
| PI270140 | C. lanatus | India | PI512342 | C. lanatus | Spain |
| PI271769 | C. amarus | Transvaal, South Africa | PI512833 | C. lanatus | Spain |
| PI271778 | C. lanatus | Transvaal, South Africa | PI525096 | C. lanatus | Egypt |
| PI278057 | C. lanatus | Turkey | PI532811 | C. lanatus | China |
| PI296341 | C. amarus | Cape Province, South Africa | PI593358 | C. lanatus | China |
| PI299379 | C. amarus | Cape Province, South Africa | Choam | C. lanatus | Unknown |
| PI357697 | C. lanatus | Macedonia | Sugar Baby | C. lanatus | Unknown |
| PI378617 | C. lanatus | Zaire | Calhoun gray | C. lanatus | Unknown |
| PI385964 | C. lanatus | Kenya | Charleston gray | C. lanatus | Mexico |
| PI457916 | C. mucosospermus | Liberia | PI296341-FR | C. amarus | South Africa |
The seedling characteristics of watermelon germplasm and commercial cultivars.
| Accession | Hypocotyl length (mm) | Width of hypocotyl (mm) | Width of cotyledon (mm) | Length / width of cotyledon | ||||
|---|---|---|---|---|---|---|---|---|
| IT188208 | 57.7±9.4 | c-gz | 2.1±0.4 | c-l | 27.5±2.9 | e-l | 1.6±0.1 | e-m |
| IT199860 | 70±7.2 | bc | 2±0.3 | e-l | 29.6±4.2 | c-h | 1.7±0.1 | b-f |
| PI189225-1 | 65.7±5 | b-d | 2.5±0.2 | b-e | 32.5±3.9 | b-e | 1.6±0.2 | d-l |
| PI189225-5 | 49.4±15.7 | f-m | 2.6±0.5 | b-d | 21.7±6.7 | m-r | 1.4±0.2 | mn |
| PI203551-1 | 63.8±5.7 | b-e | 2±0.2 | e-l | 28.1±6.6 | d-l | 1.5±0.2 | g-m |
| PI203551-6 | 45.1±6.2 | g-o | 1.8±0.3 | i-m | 25.4±3.8 | h-o | 1.5±0.1 | h-m |
| PI225557 | 37.8±12.7 | l-q | 1.7±0.3 | k-m | 21.4±2.2 | n-r | 1.7±0.1 | c-h |
| PI254743-1 | 41±6.5 | k-q | 2.3±0.3 | b-h | 29.4±1.9 | c-i | 1.8±0.1 | a-e |
| PI254743-5 | 44.1±5.3 | h-p | 2.2±0.3 | b-k | 31.9±4.5 | b-f | 1.5±0.1 | f-m |
| PI270140-1 | 34.9±15.8 | n-s | 1.9±0.2 | f-l | 20.4±3.9 | o-r | 1.6±0.2 | f-m |
| PI270140-8 | 36.3±5.4 | m-r | 2±0.4 | e-l | 26.8±3 | f-n | 1.4±0.1 | i-m |
| PI271769 | 32.4±7.9 | o-s | 2±0.3 | e-l | 23±2.9 | l-p | 1.6±0.1 | d-i |
| PI271778 | 35.4±5.1 | n-r | 2±0.3 | e-l | 25.4±1.9 | h-o | 1.7±0.1 | b-h |
| PI278057-1 | 39.5±10.8 | l-q | 2.3±0.7 | b-j | 24±2.8 | i-p | 1.6±0.1 | d-j |
| PI278057-8 | 48±8.8 | f-n | 2.5±0.1 | b-e | 29.5±0.5 | c-i | 1.6±0.1 | f-m |
| PI296341-5 | 23.5±1.5 | rs | 1.7±0 | lm | 19±1 | p-r | 1.9±0.1 | a |
| PI296341-6 | 29.3±11.4 | q-s | 1.9±0.1 | g-l | 17.7±1.9 | qr | 1.8±0.2 | a-c |
| PI299379-1 | 41.3±6.3 | j-q | 2.6±0.2 | bc | 34.2±1.8 | bc | 1.6±0.2 | e-m |
| PI299379-13 | 38.7±8.8 | l-q | 2.3±0.3 | b-i | 26.6±4.9 | f-n | 1.6±0.2 | d-l |
| PI299379-3 | 21.8±10.2 | s | 1.8±0.2 | j-m | 23±4.2 | l-p | 1.6±0.1 | e-m |
| PI357697-4 | 30.3±16.3 | p-s | 2±0.3 | e-l | 22±3.7 | m-q | 1.4±0.1 | l-n |
| PI357697-8 | 54.8±6 | d-i | 2.6±0.3 | bc | 28.6±4.8 | d-k | 1.6±0.1 | d-i |
| PI378617-1 | 41.4±7.8 | i-q | 2.4±0.3 | b-g | 28.6±2.4 | d-k | 1.9±0.1 | a |
| PI378617-3 | 29.4±3.5 | q-s | 2.1±0.3 | c-l | 25.8±1.7 | g-o | 1.8±0.1 | a-d |
| PI385964-1 | 35.7±10.4 | m-r | 2.2±0.5 | b-j | 21.7±1.2 | m-r | 1.6±0.1 | d-i |
| PI385964-5 | 35.6±3.6 | m-r | 2.2±0.4 | b-j | 26.9±2.5 | f-m | 1.7±0.1 | b-g |
| PI457916-2 | 40.9±5.3 | k-q | 3.2±0.4 | a | 33.3±2.5 | b-d | 1.6±0.1 | d-l |
| PI457916-5 | 36.7±3.3 | m-r | 2.7±0.2 | b | 31.9±4.3 | b-f | 1.6±0.1 | e-m |
| PI482318-2/3 | 31.9±6.2 | o-s | 2.3±0.4 | b-h | 26.3±6.1 | g-n | 1.4±0.2 | l-n |
| PI482318-1 | 42.3±9.2 | i-q | 2.4±0.3 | b-g | 27±3.1 | f-m | 1.4±0.1 | j-n |
| PI482322-2 | 51.5±4.2 | e-l | 2±0.3 | e-l | 27±1.4 | f-m | 1.4±0.1 | k-n |
| PI482322-4 | 56.3±6.5 | d-h | 1.9±0.2 | g-m | 23.4±2.4 | j-p | 1.5±0.1 | i-m |
| PI487458-1 | 66±11.5 | b-d | 2±0.3 | e-l | 27.6±2.9 | e-l | 1.6±0.1 | f-m |
| PI487458-6 | 70.9±10.2 | b | 2±0.4 | e-l | 28±3 | d-l | 1.6±0.1 | e-m |
| PI494527 | 65.8±5.2 | b-c | 2.3±0.2 | b-i | 31.1±3 | c-g | 1.6±0.1 | d-k |
| PI500303 | 71.5±1.5 | b | 3.2±0.3 | a | 35.5±0.5 | b | 1.6±0.1 | f-m |
| PI500336-1 | 43.5±6.7 | h-p | 2.3±0.2 | b-j | 32.5±1.4 | b-e | 1.5±0.1 | i-m |
| PI500336-5 | 41.6±7.1 | i-q | 2±0.3 | e-l | 28.1±4.1 | d-l | 1.5±0.1 | f-m |
| PI512342-1 | 56.1±10.6 | d-h | 2.3±0.3 | b-i | 25.3±1.9 | h-o | 1.6±0.1 | e-m |
| PI512342-4 | 58.7±9 | b-f | 1.8±0.3 | h-m | 19.4±1.7 | p-r | 1.6±0.1 | e-m |
| PI512833 | 40±0 | k-q | 2.4±0 | b-g | 20±0 | p-r | 1.5±0 | i-m |
| PI525096-1 | 55.8±10.6 | d-h | 2.5±0.3 | b-f | 28.8±3.2 | d-j | 1.5±0.2 | f-m |
| PI525096-4 | 53.6±11.3 | d-k | 2.5±0.4 | b-f | 28.9±5 | d-i | 1.6±0.2 | f-m |
| PI532811 | 100±0 | a | 3.6±0 | a | 42±0 | a | 1.2±0 | n |
| PI593358 | 40.1±10.2 | k-q | 2.3±0.3 | b-j | 29.4±3 | c-i | 1.6±0 | e-m |
| Choam | 54.7±8.9 | d-j | 2±0.2 | f-l | 16.8±1.8 | r | 1.6±0.1 | d-k |
| SugarBaby | 35±5.2 | n-r | 2.1±0.5 | d-l | 23.2±1.2 | k-p | 1.6±0.1 | e-m |
| CalhounGray | 40±14.6 | k-q | 2.3±0.6 | b-i | 25.6±4.4 | h-o | 1.6±0.1 | d-i |
| CharlestonGray | 41.9±15.5 | i-q | 1.9±0.4 | g-l | 24.1±2.9 | h-p | 1.6±0.1 | e-m |
| PI296341-FR | 24±3.2 | rs | 2.1±0.2 | c-l | 17.7±2.3 | qr | 1.5±0.2 | f-m |
| Speedkkul | 47.2±6.1 | f-n | 1.8±0.5 | h-m | 24.2±1.1 | h-p | 1.5±0 | g-m |
| Soknorankkul | 32.7±9.7 | o-s | 1.4±0.2 | m | 10.3±2.6 | s | 1.7±0.1 | b-h |
| Ojakgyo | 40.2±8.9 | k-q | 2.2±0.4 | b-k | 25.9±4.6 | g-n | 1.6±0.1 | e-m |
Distribution of watermelon germplasm and commercial cultivars for resistance to Fusarium oxysporum f. sp. niveum race 2.
| Accession | Disease ratingz | Degree of resistancey | Accession | Disease rating | Degree of resistance | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | Mean | 0 | 1 | 2 | 3 | Mean | ||||
| IT188208 | 0 | 0 | 0 | 10 | 3.0 ax | S | PI457916-2 | 0 | 0 | 0 | 10 | 3.0 a | S |
| IT199860 | 6 | 0 | 0 | 3 | 1.0 c | R | PI457916-5 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI189225-1 | 1 | 0 | 0 | 9 | 2.7 a | S | PI482318-2/3 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI189225-5 | 0 | 0 | 1 | 9 | 2.9 a | S | PI482318-1 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI203551-1 | 0 | 0 | 0 | 7 | 3.0 a | S | PI482322-2 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI203551-6 | 0 | 0 | 0 | 10 | 3.0 a | S | PI482322-4 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI225557 | 0 | 0 | 0 | 6 | 3.0 a | S | PI487458-1 | 0 | 0 | 0 | 9 | 3.0 a | S |
| PI254743-1 | 0 | 0 | 0 | 10 | 3.0 a | S | PI487458-6 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI254743-5 | 0 | 0 | 0 | 10 | 3.0 a | S | PI494527 | 4 | 0 | 1 | 5 | 1.7 b | MR |
| PI270140-1 | 0 | 0 | 0 | 4 | 3.0 a | S | PI500303 | 0 | 0 | 0 | 3 | 3.0 a | S |
| PI270140-8 | 0 | 0 | 0 | 10 | 3.0 a | S | PI500336-1 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI271769 | 0 | 0 | 0 | 0 | -w | - | PI500336-5 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI271778 | 1 | 0 | 0 | 8 | 2.7 a | S | PI512342-1 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI278057-1 | 0 | 0 | 0 | 9 | 3.0 a | S | PI512342-4 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI278057-8 | 0 | 0 | 0 | 9 | 3.0 a | S | PI512833 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI296341-5 | 0 | 0 | 0 | 0 | - | - | PI525096-1 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI296341-6 | 4 | 0 | 0 | 1 | 0.6 c | R | PI525096-4 | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI299379-1 | 0 | 0 | 0 | 10 | 3.0 a | S | PI532811 | 1 | 2 | 1 | 0 | 1.0 c | R |
| PI299379-13 | 0 | 0 | 0 | 10 | 3.0 a | S | PI593358 | 3 | 0 | 0 | 7 | 2.1 b | S |
| PI299379-3 | 0 | 1 | 0 | 9 | 2.8 a | S | Choam | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI357697-4 | 0 | 0 | 0 | 10 | 3.0 a | S | SugarBaby | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI357697-8 | 0 | 0 | 1 | 9 | 2.9 a | S | CalhounGray | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI378617-1 | 0 | 0 | 0 | 10 | 3.0 a | S | CharlestonGray | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI378617-3 | 0 | 0 | 0 | 10 | 3.0 a | S | PI296341-FR | 0 | 0 | 0 | 0 | - | - |
| PI385964-1 | 0 | 0 | 0 | 10 | 3.0 a | S | Speedkkul | 0 | 0 | 0 | 10 | 3.0 a | S |
| PI385964-5 | 0 | 0 | 0 | 10 | 3.0 a | S | Soknorankkul | 0 | 0 | 0 | 7 | 3.0 a | S |
Evaluation of watermelon germplasm and commercial cultivars for resistance to root-knot nematode.
| Accession | No. of gall / plant | No. of egg mass / plant | Degree of resistancez | Accession | No. of gall / plant | No. of egg mass / plant | Degree of resistance |
|---|---|---|---|---|---|---|---|
| IT188208 | 147.0 o-t | 19.4 l-pz | MR | PI457916-2 | 13.2 t | 1.6 p | R |
| IT199860 | 187.2 m-s | 10.8 n-p | S | PI457916-5 | 12.6 t | 2.0 p | R |
| PI189225-1 | 267.0 h-p | 6.8 op | S | PI482318-2/3 | 172.8 n-s | 19.2 l-p | S |
| PI189225-5 | 136.6 p-t | 6.0 op | MR | PI482318-1 | 276.8 g-o | 15.4 m-p | S |
| PI203551-1 | 456.2 a-e | 76.8 c-f | S | PI482322-2 | 212.0 l-r | 94.6 bc | S |
| PI203551-6 | 240.4 j-q | 24.4 j-p | S | PI482322-4 | 208.8 l-r | 86.4 b-d | S |
| PI225557 | 117.8 q-t | 11.4 n-p | MR | PI487458-1 | 385.4 b-i | 11.2 n-p | S |
| PI254743-1 | 375.6 c-j | 39.0 h-m | S | PI487458-6 | 272.6 g-p | 21.8 k-p | S |
| PI254743-5 | 356.4 d-k | 46.4 g-k | S | PI494527 | 509.4 a-c | 6.6 op | S |
| PI270140-1 | 276.3 g-o | 23.3 k-p | S | PI500303 | 311.5 f-m | 5.0 p | S |
| PI270140-8 | 241.6 j-q | 59.6 e-h | S | PI500336-1 | 138.8 o-t | 6.4 op | MR |
| PI271769 | 378.0 c-j | 20.3 l-p | S | PI500336-5 | 139.2 o-t | 21.8 k-p | MR |
| PI271778 | 296.8 g-n | 5.6 op | S | PI512342-1 | 222.6 k-r | 19.8 l-p | S |
| PI278057-1 | 166.4 n-s | 35.2 h-n | S | PI512342-4 | 529.2 a | 38.4 h-m | S |
| PI278057-8 | 241.8 j-q | 38.6 h-m | S | PI512833 | 403.0 a-h | 64.6 d-g | S |
| PI296341-5 | 50.0 st | 2.0 p | R | PI525096-1 | 409.2 a-g | 82.2 b-e | S |
| PI296341-6 | 137.0 p-t | 41.0 g-l | MR | PI525096-4 | 232.0 k-q | 64.8 d-g | S |
| PI299379-1 | 150.8 o-t | 2.8 p | MR | PI532811 | 341.8 e-l | 8.6 op | S |
| PI299379-13 | 117.0 q-t | 6.8 op | MR | PI593358 | 91.4 r-t | 5.4 p | MR |
| PI299379-3 | 192.4 m-r | 8.2 op | S | Choam | 115.6 q-t | 8.8 op | MR |
| PI357697-4 | 163.8 n-s | 23.0 k-p | S | SugarBaby | 199.2 m-r | 30.8 i-o | S |
| PI357697-8 | 480.2 a-d | 165.8 a | S | CalhounGray | 437.8 a-f | 49.6 g-j | S |
| PI378617-1 | 170.6 n-s | 51.8 f-i | S | CharlestonGray | 183.0 m-s | 23.6 k-p | S |
| PI378617-3 | 253.0 i-q | 59.8 e-h | S | PI296341-FR | 88.0 r-t | 12.5 n-p | MR |
| PI385964-1 | 179.4 m-s | 9.2 op | S | Speedkkul | 517.8 ab | 22.4 k-p | S |
| PI385964-5 | 386.0 b-i | 106.2 b | S |
Fruit characteristics of watermelon germplasm and commercial cultivars used in this study.
| Accession | Fruit shapes | Skin color | Rind pattern | Flesh color | No. of seeds / fruit (ea) |
|---|---|---|---|---|---|
| IT188208 | elongated elliptic | light green | Stripes | White | 361±71.2 |
| IT199860 | elongated elliptic | light green | spotted | Yellow | 414.9±144.6 |
| PI189225 | circular | light green | absent | White | 284.6±43.5 |
| PI203551 | circular | light green | Stripes | Yellow | 240.9±74 |
| PI225557 | circular | light green | absent | White | 429.5±69.1 |
| PI254743 | circular | green | Stripes | Yellow | 536.8±121.3 |
| PI270140 | circular | light green | absent | Yellow | 388.3±202.6 |
| PI271769 | circular | yellow | absent | White | 187.4±49 |
| PI271778 | elliptic | dark green | Stripes | Yellow | 186.7±83.5 |
| PI278057 | elongated elliptic | dark green | absent | pink | 159.6±102.6 |
| PI296341 | circular | light green | Stripes | White | 635.7±229.6 |
| PI299379 | circular | light green | absent | White | 592.4±325.7 |
| PI357697 | broad elliptic | green | Stripes | Pinkish red | 222.1±108.1 |
| PI378617 | elongated elliptic | green | absent | Red | 228±34 |
| PI385964 | elongated elliptic | green | Stripes | Red | 278.2±110.4 |
| PI457916 | circular | green | Stripes | Yellow | 129.5±58.2 |
| PI482318 | circular | light green | Stripes | Red | 63±27 |
| PI482322 | circular | black | absent | Pinkish red | 718.8±766.8 |
| PI487458 | circular | light green | Stripes | Red | 292.7±128.2 |
| PI494527 | broad elliptic | light green | absent | Yellow | 369.1±81.8 |
| PI500303 | elongated elliptic | light green | spotted | White | 551±76 |
| PI500336 | elliptic | light green | absent | Red | 337.2±142.5 |
| PI512342 | elliptic | green | Stripes | Red | 392±175.4 |
| PI525096 | circular | green | Stripes | Red | 233±92.4 |
| PI532811 | circular | green | Stripes | White | 182.7±9 |
| PI593358 | circular | light green | Stripes | Yellow | 455.5±193.9 |
| Choam | circular | green | Stripes | Pinkish red | 234.3±107.9 |
| PI296341-FR | circular | light green | absent | Yellow | 680.5±58 |
| SugarBaby | circular | dark green | Stripes | Pinkish red | 392.6±51 |
| CalhounGray | elongated elliptic | light green | absent | Pinkish red | 259.8±123.6 |
| CharlestonGray | elongated elliptic | light green | absent | Pinkish red | 274±129.7 |
zThe same letters in the column denote no significant difference at p=0.01 by LSD test.
zDisease rating was measured by visual evaluation of seedling; 0=no wilting, 1=the lower leaves begins wilting, 2=more than 50% of plants are severely wilted, 3=plants are dead.
yDegree of resistance : R, resistant (disease rating [DR]=0-0.9); MR, moderately resistant (DR=1.0-1.9); S, susceptible (DR=2.0-3.0).
xThe same letters in the column denote no significant difference at p=0.01 by LSD test.
wNo germination until 10 days after sowing.
zThe same letters in the column denote no significant difference at p=0.01 by LSD test.
yDegree of resistance : R, resistant ; MR, moderately resistant ; S, susceptible.