Abstract
Onion (Allium cepa L.), a member of the Amaryllidaceae family, is a cool-season vegetable crop and one of the most significant horticulture crops farmed globally for culinary purposes. It is the world's second most-farmed horticulture crop. Therefore, research was conducted to study the effects of foliar chitosan treatment on the growth and yield of two onion cultivars, Prema and Dayo. Research was conducted in the Experimental Area, Department of Horticultural Sciences, The Islamia University of Bahawalpur. Three different concentrations of chitosan @ 50 ppm, 100 ppm, and 150 ppm were used. The experiment was laid out according to a randomised complete block design (RCBD) with two factors and three replications. Data were collected on leaf area (cm²), leaf height (cm), number of leaves, leaf width (cm), LEF (linear electron flow), PAR (photosynthetically active radiation) (µmol m-² s-1), Phi2 (quantum yield of photosystem II), PhiNO (ratio of light not absorbed), total chlorophyll contents (SPAD) (mg g-1 FW), PhiNPQ (ratio of incoming light), leaf thickness, vh+ (proton gradient), gh+ (ATP synthase activity) and bulb weight. The most apparent increases were shown at 50 ppm. The results showed that chitosan considerably increased leaf area, leaf height, number of leaves, leaf width, photosynthetic efficiency (Phi2), total chlorophyll content (SPAD), and bulb weight. No significant differences were found for leaf thickness, gh+, PhiNO, and linear electron flow. The results highlight the potential of chitosan as a growth enhancer, implying that routine agricultural procedures may result in more resilient onion plants and increased yields.
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Claims 3
Claim · model-written summary
Chitosan increased onion leaf area, height and number of leaves.
- Taxon
- Onion
Allium cepat0 - Treatment
- chitosane0
- Outcome
- leaf area, leaf height, number of leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitosan considerably increased leaf area, leaf height, number of leaves, leaf width, photosynthetic efficiency (Phi2), total chlorophyll content (SPAD), and bulb weight”
t0“Onion”
Claim · model-written summary
Chitosan increased photosynthetic efficiency and chlorophyll content.
- Taxon
- OnionAllium cepat0
- Treatment
- chitosane0
- Outcome
- photosynthetic efficiency (Phi2), total chlorophyll content (SPAD)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitosan considerably increased leaf area, leaf height, number of leaves, leaf width, photosynthetic efficiency (Phi2), total chlorophyll content (SPAD), and bulb weight”
t0“Onion”
Claim · model-written summary
Chitosan increased bulb weight.
- Taxon
- OnionAllium cepat0
- Treatment
- chitosane0
- Outcome
- bulb weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitosan considerably increased leaf area, leaf height, number of leaves, leaf width, photosynthetic efficiency (Phi2), total chlorophyll content (SPAD), and bulb weight”
t0“Onion”
The same questions in other papers
chitosan · growth · Allium cepa (onion)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
chitosan · yield · Allium cepa (onion)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.