Abstract
Onion cultivation during summer wet season faces problems in seedlings raising and difficulties in management practices in the main field, which is a great concern. Ethyl methane sulphonate (EMS) is a chemical mutagen which helps to develop desirable mutant by point mutation. The present experiment was carried out at the Horticulture field laboratory of BINA, Mymensingh during the period July to October, 2019 to investigate the effect of ethyl methane sulphonate (EMS) for developing desirable mutants of onion under ambient and elevated temperature conditions. In this experiment five different doses of EMS viz., 0%, 0.5%, 1%, 1.5% and 2% were applied on onion seeds and the treated seedlings were grown under ambient and elevated temperature conditions. The experiments were conducted following Randomized Complete Block Design (RCBD) in field and Completely Randomized Design (CRD) in pot experiment under greenhouse condition. In the field trial, under ambient condition total leaf area, leaf area index, chlorophyll content and total bulb yield were significantly influenced by different concentrations of EMS. At ambient temperature, the highest bulb length (6.52 cm) and diameter (5.04 cm), single bulb weight (38.3 g) and total bulb yield (14.95 t/ha) were recorded with 0.5% EMS application, which decreased with further increasing concentrations of EMS (1.0-2.0%). On the contrary, the above yield parameters and total bulb yield were decreased under elevated temperature condition (+ 2ºC higher than ambient) irrespective of EMS concentrations. Above all, the interaction effects of temperature and EMS concentrations on onion seeds germination, seedling growth and yield components were found non-significant, although maximum total bulb yield was found with 0.5% -1.0% EMS application under ambient temperature condition. Conclusively, growth and yield attributes of summer onion were enhanced by applying chemical mutagen EMS at 0.5%-1.0% under ambient field condition, however elevated temperature (+2ºC higher than ambient) affected the yield of summer onion at all levels of EMS application.
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Claims 12
Claim · model-written summary
EMS concentrations significantly influenced total leaf area and leaf area index under ambient field conditions.
- Taxon
- Onion
Allium cepat0 - Treatment
- different concentrations of EMSe0
- Outcome
- total leaf area, leaf area indexe0
- Qualifier
- under ambient conditione0
- Setting
- fielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field trial, under ambient condition total leaf area, leaf area index, chlorophyll content and total bulb yield were significantly influenced by different concentrations of EMS”
t0“Onion”
Claim · model-written summary
EMS concentrations significantly influenced chlorophyll content under ambient field conditions.
- Taxon
- OnionAllium cepat0
- Treatment
- different concentrations of EMSe0
- Outcome
- chlorophyll contente0
- Qualifier
- under ambient conditione0
- Setting
- fielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field trial, under ambient condition total leaf area, leaf area index, chlorophyll content and total bulb yield were significantly influenced by different concentrations of EMS”
t0“Onion”
Claim · model-written summary
EMS concentrations significantly influenced total bulb yield under ambient field conditions.
- Taxon
- OnionAllium cepat0
- Treatment
- different concentrations of EMSe0
- Outcome
- total bulb yielde0
- Qualifier
- under ambient conditione0
- Setting
- fielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field trial, under ambient condition total leaf area, leaf area index, chlorophyll content and total bulb yield were significantly influenced by different concentrations of EMS”
t0“Onion”
Claim · model-written summary
At ambient temperature, 0.5% EMS gave the highest bulb length of 6.52 cm; higher EMS concentrations reduced it.
- Taxon
- OnionAllium cepat0
- Treatment
- 0.5% EMS applicatione0
- Outcome
- bulb lengthe0
- Direction
- higheste0
- Value
- 6.52 cme0
- Qualifier
- At ambient temperaturee0
- Comparator
- concentrations of EMSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At ambient temperature, the highest bulb length (6.52 cm) and diameter (5.04 cm), single bulb weight (38.3 g) and total bulb yield (14.95 t/ha) were recorded with 0.5% EMS application, which decreased with further increasing concentrations of EMS (1.0-2.0%)”
t0“Onion”
Claim · model-written summary
At ambient temperature, 0.5% EMS gave the highest bulb diameter of 5.04 cm; higher EMS concentrations reduced it.
- Taxon
- OnionAllium cepat0
- Treatment
- 0.5% EMS applicatione0
- Outcome
- diametere0
- Direction
- higheste0
- Value
- 5.04 cme0
- Qualifier
- At ambient temperaturee0
- Comparator
- concentrations of EMSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At ambient temperature, the highest bulb length (6.52 cm) and diameter (5.04 cm), single bulb weight (38.3 g) and total bulb yield (14.95 t/ha) were recorded with 0.5% EMS application, which decreased with further increasing concentrations of EMS (1.0-2.0%)”
t0“Onion”
Claim · model-written summary
At ambient temperature, 0.5% EMS gave the highest single bulb weight of 38.3 g; higher EMS concentrations reduced it.
- Taxon
- OnionAllium cepat0
- Treatment
- 0.5% EMS applicatione0
- Outcome
- single bulb weighte0
- Direction
- higheste0
- Value
- 38.3 ge0
- Qualifier
- At ambient temperaturee0
- Comparator
- concentrations of EMSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At ambient temperature, the highest bulb length (6.52 cm) and diameter (5.04 cm), single bulb weight (38.3 g) and total bulb yield (14.95 t/ha) were recorded with 0.5% EMS application, which decreased with further increasing concentrations of EMS (1.0-2.0%)”
t0“Onion”
Claim · model-written summary
At ambient temperature, 0.5% EMS gave the highest total bulb yield of 14.95 t/ha; higher EMS concentrations reduced it.
- Taxon
- OnionAllium cepat0
- Treatment
- 0.5% EMS applicatione0
- Outcome
- total bulb yielde0
- Direction
- higheste0
- Value
- 14.95 t/hae0
- Qualifier
- At ambient temperaturee0
- Comparator
- concentrations of EMSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At ambient temperature, the highest bulb length (6.52 cm) and diameter (5.04 cm), single bulb weight (38.3 g) and total bulb yield (14.95 t/ha) were recorded with 0.5% EMS application, which decreased with further increasing concentrations of EMS (1.0-2.0%)”
t0“Onion”
Claim · model-written summary
Elevated temperature decreased bulb length, diameter and single bulb weight regardless of EMS concentration.
- Taxon
- OnionAllium cepat0
- Treatment
- elevated temperature condition (+ 2ºC higher than ambient)e1
- Outcome
- yield parameterse1
- Direction
- decreasede1
- Qualifier
- irrespective of EMS concentrationse1
- Comparator
- ambiente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest bulb length (6.52 cm) and diameter (5.04 cm), single bulb weight (38.3 g)”
e1“the above yield parameters and total bulb yield were decreased under elevated temperature condition (+ 2ºC higher than ambient) irrespective of EMS concentrations”
t0“Onion”
Claim · model-written summary
Elevated temperature decreased total bulb yield regardless of EMS concentration.
- Taxon
- OnionAllium cepat0
- Treatment
- elevated temperature condition (+ 2ºC higher than ambient)e0
- Outcome
- total bulb yielde0
- Direction
- decreasede0
- Qualifier
- irrespective of EMS concentrationse0
- Comparator
- ambiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the above yield parameters and total bulb yield were decreased under elevated temperature condition (+ 2ºC higher than ambient) irrespective of EMS concentrations”
t0“Onion”
Claim · model-written summary
Temperature-by-EMS interactions on germination, seedling growth and yield components were not significant.
- Taxon
- onionAllium cepae0
- Treatment
- temperature and EMS concentrationse0
- Outcome
- seeds germination, seedling growth and yield componentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the interaction effects of temperature and EMS concentrations on onion seeds germination, seedling growth and yield components were found non-significant”
Claim · model-written summary
Maximum total bulb yield occurred with 0.5% -1.0% EMS under ambient temperature.
- Taxon
- OnionAllium cepat0
- Treatment
- 0.5% -1.0% EMS applicatione0
- Outcome
- total bulb yielde0
- Direction
- maximume0
- Qualifier
- under ambient temperature conditione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum total bulb yield was found with 0.5% -1.0% EMS application under ambient temperature condition”
t0“Onion”
Claim · model-written summary
EMS at 0.5%-1.0% enhanced summer onion growth and yield attributes under ambient field conditions.
- Taxon
- summer onionAllium cepae0
- Treatment
- chemical mutagen EMS at 0.5%-1.0%e0
- Outcome
- growth and yield attributese0
- Direction
- enhancede0
- Qualifier
- under ambient field conditione0
- Setting
- fielde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and yield attributes of summer onion were enhanced by applying chemical mutagen EMS at 0.5%-1.0% under ambient field condition”
The same questions in other papers
ethyl methanesulfonate · growth · Allium cepa (onion)Positive and negative results
1 in the opposite direction
- negative
mutagen · yield · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
heat · yield · Allium cepa (onion)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 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.