Abstract
Onion is a cool-season crop and the development of high temperature tolerant varieties will help in alleviating ‘onion - crises’. A total of 7 onion genotypes were exposed to constant temperature of 25, 30, 35, 40 and 45°C under in vitro and grown under increasing temperature from March to May to study the impact of high temperature on morphological traits and bulb yield. The genotypes responded differently and high temperature led to decline in germination (%), survival days, seedling length and weight. Sel. 140 exhibited less decline compared to other genotypes. The drastic reduction of germination percentage was recorded at higher temperature of 40 and 45°C. The highest seedling vigour index of 2062 was exhibited by Sel. 140. The highest germination (%) was recorded in March sowing in genotype Sel. 140 (90.3) and least in May sowing in genotype Sel. 417 (65.3). High temperature resulted in a significant reduction in vegetative growth traits and yield traits. Agrifound Dark Red and Sel. 140 were found promising for high temperature tolerance. The high amount of variability suggests scope for improvement and gradual genetic drift is possible to develop onion varieties suitable for high temperature condition.
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Claims 10
Claim · model-written summary
High temperature reduced onion germination, survival days, seedling length and weight.
- Taxon
- onion
Allium cepat0 - Treatment
- high temperaturee0
- Outcome
- germination (%), survival days, seedling length and weighte0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high temperature led to decline in germination (%), survival days, seedling length and weight.”
t0“onion”
Claim · model-written summary
Sel. 140 showed less decline than other genotypes.
- Taxon
- onionAllium cepat0
- Material
- Sel. 140e0
- Outcome
- less declinee0
- Direction
- less declinee0
- Comparator
- other genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sel. 140 exhibited less decline compared to other genotypes.”
t0“onion”
Claim · model-written summary
Germination was drastically reduced at 40 and 45°C.
- Taxon
- onionAllium cepat0
- Treatment
- higher temperature of 40 and 45°Ce0
- Outcome
- germination percentagee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The drastic reduction of germination percentage was recorded at higher temperature of 40 and 45°C.”
t0“onion”
Claim · model-written summary
Sel. 140 had the highest seedling vigour index, 2062.
- Taxon
- onionAllium cepat0
- Material
- Sel. 140e0
- Outcome
- seedling vigour indexe0
- Direction
- higheste0
- Value
- 2062e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest seedling vigour index of 2062 was exhibited by Sel. 140.”
t0“onion”
Claim · model-written summary
Sel. 140 had the highest March-sown germination, 90.3.
- Taxon
- onionAllium cepat0
- Material
- Sel. 140e0
- Outcome
- germination (%)e0
- Direction
- higheste0
- Value
- 90.3e0
- Qualifier
- March sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest germination (%) was recorded in March sowing in genotype Sel. 140 (90.3)”
t0“onion”
Claim · model-written summary
Sel. 417 had the lowest May-sown germination, 65.3.
- Taxon
- onionAllium cepat0
- Material
- Sel. 417e0
- Outcome
- germination (%)e0
- Direction
- leaste0
- Value
- 65.3e0
- Qualifier
- May sowinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest germination (%) was recorded in March sowing in genotype Sel. 140 (90.3) and least in May sowing in genotype Sel. 417 (65.3)”
t0“onion”
Claim · model-written summary
High temperature significantly reduced vegetative growth and yield traits.
- Taxon
- onionAllium cepat0
- Treatment
- High temperaturee0
- Outcome
- vegetative growth traits and yield traitse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High temperature resulted in a significant reduction in vegetative growth traits and yield traits.”
t0“onion”
Claim · model-written summary
Agrifound Dark Red was promising for high-temperature tolerance.
- Taxon
- onionAllium cepat0
- Material
- Agrifound Dark Rede0
- Outcome
- high temperature tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Agrifound Dark Red and Sel. 140 were found promising for high temperature tolerance.”
t0“onion”
Claim · model-written summary
Sel. 140 was promising for high-temperature tolerance.
- Taxon
- onionAllium cepat0
- Material
- Sel. 140e0
- Outcome
- high temperature tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Agrifound Dark Red and Sel. 140 were found promising for high temperature tolerance.”
t0“onion”
Claim · model-written summary
Observed variability offers scope to improve heat-adapted onion varieties.
- Taxon
- onionAllium cepae0
- Outcome
- develop onion varieties suitable for high temperature conditione0
- Qualifier
- high amount of variabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The high amount of variability suggests scope for improvement and gradual genetic drift is possible to develop onion varieties suitable for high temperature condition.”
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See all 6 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.