Abstract
ABSTRACT Cucumber (Cucumis sativus L.) germinates in an optimal temperature ranging from 24 to 28 °C. In order to develop cultivars with low temperature germination ability, knowledge regarding its genetic basis is needed. In our earlier study, we identified the accession PI 390953 as chilling tolerant and a good cold germinator. The objective of our present study was to compare cold germinability of cold tolerant breeding line B 5669 with PI 390953, and to measure the inheritance of this trait. At 13 °C, both tested cultigens (B 5669, PI 390953) showed the highest germinability and we found no significant differences between them regarding the rate of germination, days to germination (DTG), or germination index (GI). We also observed differences in the germination ability at 13 °C among seven hybrid populations of cucumber, derived from the cross between good cold germinator B 5669 (P1) and B 6115 (P2) lacking cold-germination ability. The fastest low temperature germination and the highest low temperature germination percentages were observed in B 5669 (P1) with germination of 78 and 100% on the 6 th and 10 th day of the test, respectively. In addition, the cultigen B 5669 exhibited the fastest germination, reaching on average of DTG = 5.7. B 6115 (P2) and BC1P2 proved unable to germinate at 13 °C even within 21 days. The seed germinability of F2 population fits a three-recessive gene model. Cucumber cultigens B 5669, PI 390953, and PI 246903 showed low temperature tolerance, but of them B 5669 may become the most desirable to breeders since it exhibits cold germinability combined with good fruit quality traits.
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Claims 9
Claim · model-written summary
B 5669 and PI 390953 had the highest germinability at 13 °C, without significant differences in germination rate, days to germination, or germination index.
- Taxon
- cucumber
Cucumis sativust0 - Material
- B 5669, PI 390953e0
- Treatment
- 13 °Ce0
- Outcome
- rate of germination, days to germination (DTG), or germination index (GI)e0
- Comparator
- between theme0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 13 °C, both tested cultigens (B 5669, PI 390953) showed the highest germinability and we found no significant differences between them regarding the rate of germination, days to germination (DTG), or germination index (GI).”
t0“cucumber”
Claim · model-written summary
Seven hybrid cucumber populations differed in germination ability at 13 °C.
- Taxon
- cucumberCucumis sativuse0
- Material
- seven hybrid populationse0
- Treatment
- 13 °Ce0
- Outcome
- germination abilitye0
- Direction
- differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We also observed differences in the germination ability at 13 °C among seven hybrid populations of cucumber, derived from the cross between good cold germinator B 5669 (P1) and B 6115 (P2) lacking cold-germination ability.”
Claim · model-written summary
B 5669 had the fastest low temperature germination and germination of 78% on day 6.
Not reportedTaxon
Verbatim
e0“The fastest low temperature germination and the highest low temperature germination percentages were observed in B 5669 (P1) with germination of 78 and 100% on the 6 th and 10 th day of the test, respectively.”
Claim · model-written summary
B 5669 germination reached 100% on day 10.
Not reportedTaxon
Verbatim
e0“The fastest low temperature germination and the highest low temperature germination percentages were observed in B 5669 (P1) with germination of 78 and 100% on the 6 th and 10 th day of the test, respectively.”
Claim · model-written summary
B 5669 germinated fastest, with an average DTG of 5.7.
Not reportedTaxon
Verbatim
e0“In addition, the cultigen B 5669 exhibited the fastest germination, reaching on average of DTG = 5.7.”
Claim · model-written summary
B 6115 and BC1P2 did not germinate at 13 °C within 21 days.
- Material
- B 6115 (P2) and BC1P2e0
- Treatment
- 13 °Ce0
- Outcome
- germinatee0
- Direction
- unablee0
- Qualifier
- within 21 dayse0
Not reportedTaxon
Verbatim
e0“B 6115 (P2) and BC1P2 proved unable to germinate at 13 °C even within 21 days.”
Claim · model-written summary
F2 seed germinability fits a three-recessive gene model.
Not reportedTaxon
Verbatim
e0“The seed germinability of F2 population fits a three-recessive gene model.”
Claim · model-written summary
B 5669, PI 390953, and PI 246903 showed low temperature tolerance.
- Taxon
- CucumberCucumis sativuse0
- Material
- B 5669, PI 390953, and PI 246903e0
- Outcome
- low temperature tolerancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cucumber cultigens B 5669, PI 390953, and PI 246903 showed low temperature tolerance, but of them B 5669 may become the most desirable to breeders since it exhibits cold germinability combined with good fruit quality traits.”
Claim · model-written summary
The authors identify B 5669 as the most desirable breeding material because it combines cold germinability with fruit quality.
- Taxon
- CucumberCucumis sativuse0
- Material
- B 5669e0
- Outcome
- most desirable to breederse0
- Qualifier
- cold germinability combined with good fruit quality traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cucumber cultigens B 5669, PI 390953, and PI 246903 showed low temperature tolerance, but of them B 5669 may become the most desirable to breeders since it exhibits cold germinability combined with good fruit quality traits.”