Abstract
Two chili pepper (Capsicum annuum L.) cultivars ‘Super Hot’ and ‘Num Khao’ grown under field conditions in Thailand were sprayed with 0 (distilled water, control), 25, 50, 100, and 200 ppm chitosan after one week from transplanting and weekly thereafter for five weeks. Chitosan spray improved vegetative growth of both cultivars as measured by increased canopy size. It also increased the plant height of the ‘Super Hot’ cultivar and reduced leaf curl incidence in the ‘Num Khao’ cultivar. Leaf size and chlorophyll content were not significantly affected. Fruit were harvested from cultivars at the commercial maturity stage; that is, the red-ripe stage for ‘Super Hot’ and light green stage for ‘Num Khao’. From the four harvests at weekly intervals, chitosan treatment increased the ‘Super Hot’ yield because of greater fruit production and increased fruit size and there was a higher number of fruit per plant produced by the ‘Num Khao’ cultivar. Fruit color (L*, a*, b*, and sensory color) was not affected, but overall acceptability increased in response to chitosan spray due to improved size and quality of the ‘Super Hot’ cultivar and improved appearance, size and glossiness of the ‘Num Khao’ cultivar. Chitosan at 50 ppm appeared to be the optimum concentration to induce the above effects in both cultivars.
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Claims 12
Claim · model-written summary
Chitosan increased canopy size in both cultivars.
CapsicumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan spray improved vegetative growth of both cultivars as measured by increased canopy size.”
t0“chili pepper”
Claim · model-written summary
Chitosan increased Super Hot plant height.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It also increased the plant height of the ‘Super Hot’ cultivar”
e2“Chitosan spray”
t0“Chili Pepper”
Claim · model-written summary
Chitosan reduced Num Khao leaf curl incidence.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced leaf curl incidence in the ‘Num Khao’ cultivar”
e2“Chitosan spray”
t0“Chili Pepper”
Claim · model-written summary
Leaf size and chlorophyll content were not significantly affected.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf size and chlorophyll content were not significantly affected.”
e2“Chitosan spray”
t0“Chili Pepper”
Claim · model-written summary
Chitosan increased Super Hot yield through greater fruit production and size.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chitosan treatment increased the ‘Super Hot’ yield because of greater fruit production and increased fruit size”
t0“Chili Pepper”
Claim · model-written summary
Chitosan increased Super Hot fruit production.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greater fruit production”
e2“Chitosan spray”
e3“the ‘Super Hot’ cultivar and reduced leaf curl”
t0“Chili Pepper”
Claim · model-written summary
Chitosan increased Super Hot fruit size.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased fruit size”
e2“Chitosan spray”
e3“the ‘Super Hot’ cultivar and reduced leaf curl”
t0“Chili Pepper”
Claim · model-written summary
Chitosan increased fruit number per plant in Num Khao.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher number of fruit per plant produced by the ‘Num Khao’ cultivar”
e2“Chitosan spray”
t0“Chili Pepper”
Claim · model-written summary
Chitosan did not affect fruit color.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit color (L*, a*, b*, and sensory color) was not affected”
e2“Chitosan spray”
t0“Chili Pepper”
Claim · model-written summary
Chitosan increased overall acceptability of Super Hot fruit through size and quality.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overall acceptability increased in response to chitosan spray due to improved size and quality of the ‘Super Hot’ cultivar”
t0“Chili Pepper”
Claim · model-written summary
Chitosan increased overall acceptability of Num Khao fruit through appearance, size and glossiness.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“overall acceptability increased in response to chitosan spray due to improved size and quality of the ‘Super Hot’ cultivar and improved appearance, size and glossiness of the ‘Num Khao’ cultivar”
t0“Chili Pepper”
Claim · model-written summary
The authors identified 50 ppm chitosan as apparently optimal for both cultivars.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chitosan at 50 ppm appeared to be the optimum concentration to induce the above effects in both cultivars.”
t0“Chili Pepper”
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