Abstract
Studies have been developed to improve cultivation conditions through the introduction of beneficial compounds, among which are vitamins. The present work aimed to investigate the effects of the application of vitamins in the onion crop. For that, five treatments were used, composed of different vitamins (ascorbic acid, thiamine, niacin and pyridoxine), in a concentration of 100 mg L-¹ and a control treatment, with water application, via foliar spray. The characteristics of chlorophyll relative index, number of plant leaves, plant height, fresh leaf mass, leaf dry mass, bulb diameter, bulb mass and bulb yield were evaluated. It was found that the application of ascorbic acid and pyridoxine increased the relative levels of chlorophyll concerning the control treatment and those composed by the application of niacin and thiamine. In addition, for liquid photosynthesis, a superior result was shown when niacin and thiamine were applied, concerning the other treatments. It was concluded that the exogenous application of vitamins alters the physiological and developmental behavior of onion plants, but does not positively affect bulb yield. The increases in photosynthetic activity were not reversed in bulb development, but in the elongation of plant leaves. Finally, the use of the vitamins studied for onion cultivation is not recommended, under conditions similar to those of the present study.
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Claims 7
Claim · model-written summary
Ascorbic acid increased relative chlorophyll compared with control, niacin and thiamine.
- Taxon
- onion
Allium cepat0 - Treatment
- ascorbic acide0
- Outcome
- relative levels of chlorophylle0
- Direction
- increasede0
- Comparator
- control treatment and those composed by the application of niacin and thiaminee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of ascorbic acid and pyridoxine increased the relative levels of chlorophyll concerning the control treatment and those composed by the application of niacin and thiamine”
t0“onion”
Claim · model-written summary
Pyridoxine increased relative chlorophyll compared with control, niacin and thiamine.
- Taxon
- onionAllium cepat0
- Treatment
- pyridoxinee0
- Outcome
- relative levels of chlorophylle0
- Direction
- increasede0
- Comparator
- control treatment and those composed by the application of niacin and thiaminee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of ascorbic acid and pyridoxine increased the relative levels of chlorophyll concerning the control treatment and those composed by the application of niacin and thiamine”
t0“onion”
Claim · model-written summary
Niacin gave superior liquid photosynthesis compared with other treatments.
- Taxon
- onionAllium cepat0
- Treatment
- niacine0
- Outcome
- liquid photosynthesise0
- Direction
- superiore0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for liquid photosynthesis, a superior result was shown when niacin and thiamine were applied, concerning the other treatments”
t0“onion”
Claim · model-written summary
Thiamine gave superior liquid photosynthesis compared with other treatments.
- Taxon
- onionAllium cepat0
- Treatment
- thiaminee0
- Outcome
- liquid photosynthesise0
- Direction
- superiore0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for liquid photosynthesis, a superior result was shown when niacin and thiamine were applied, concerning the other treatments”
t0“onion”
Claim · model-written summary
Vitamin application did not positively affect onion bulb yield.
- Taxon
- onionAllium cepae0
- Treatment
- exogenous application of vitaminse0
- Outcome
- bulb yielde0
- Direction
- does not positively affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous application of vitamins alters the physiological and developmental behavior of onion plants, but does not positively affect bulb yield”
Claim · model-written summary
Increased photosynthetic activity corresponded to leaf elongation rather than bulb development.
- Taxon
- onionAllium cepat0
- Organ / stage
- plant leavese0
- Outcome
- elongation of plant leavese0
- Direction
- increasese0
- Qualifier
- not reversed in bulb developmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increases in photosynthetic activity were not reversed in bulb development, but in the elongation of plant leaves”
t0“onion”
Claim · model-written summary
The authors do not recommend these vitamins for onion cultivation under similar conditions.
- Taxon
- onionAllium cepae0
- Outcome
- use of the vitamins studied for onion cultivation is not recommendede0
- Qualifier
- under conditions similar to those of the present studye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“use of the vitamins studied for onion cultivation is not recommended, under conditions similar to those of the present study”
The same questions in other papers
ascorbic acid · physiology: pigments · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
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.