L.) Lettuce is an important agricultural commodity worldwide and it - - PDF document
Oral Presentation CRDC 5 21/07/54 EFFECTS OF TYPES AND CONCENTRATIONS OF CHITOSAN ON GROWTH OF FRILLICE ICEBERG LETTUCE CULTIVATED ICEBERG LETTUCE CULTIVATED BY HYDROPONIC METHOD Presented by Tanet Jirapornprasert L ETTUCE ( L
Presented by Tanet Jirapornprasert
Lettuce is an important agricultural commodity
With the increase in the consumption of salads,
biopolymer prepared by deacetylation reaction of chitin found in the shells of crustaceans, such as lobsters,
without chitosan, or with the addition of P-70 (chitosan 1) at 10 and 80 mg/L, and P-90 (chitosan 2) at 20 and 80 mg/L.
representative of at least four independent replications, and they were taken after three
they were taken after three months in culture.
Investigate the appropriate use of chitosan to
Grown the lettuce for 10 days Transplant to nutrient solution for 35 days and Transplant to nutrient solution for 35 days and
Store at 8°C for 10 days
Store at 60°C for 3 days
50
a a ab ab
10 20 30 40
Fresh weight(g) b b ab ab ab
control O 5 O 10 O 20 P 5 P 10 P 20
O5 = 5 mg/L oligomeric chitosan O10 = 10 mg/L oligomeric chitosan O20 = 20 mg/L oligomeric chitosan P5 = 5 mg/L polymeric chitosan P10 = 10 mg/L polymeric chitosan P20 = 20 mg/L polymeric chitosan
2.5 0.5 1.0 1.5 2.0
Dry weight(g)
0.0 control O 5 O 10 O 20 P 5 P 10 P 20
O5 = 5 mg/L oligomeric chitosan O10 = 10 mg/L oligomeric chitosan O20 = 20 mg/L oligomeric chitosan P5 = 5 mg/L polymeric chitosan P10 = 10 mg/L polymeric chitosan P20 = 20 mg/L polymeric chitosan
6 7 1 2 3 4 5
Weight loss percentage
control O 5 O 10 O 20 P 5 P 10 P 20
O5 = 5 mg/L oligomeric chitosan O10 = 10 mg/L oligomeric chitosan O20 = 20 mg/L oligomeric chitosan P5 = 5 mg/L polymeric chitosan P10 = 10 mg/L polymeric chitosan P20 = 20 mg/L polymeric chitosan
120
ab ab a
20 40 60 80 100
Fresh weight(g) b ab b b b O0.1 = 0.1 mg/L oligomeric chitosan O1 = 1 mg/L oligomeric chitosan O5 = 5 mg/L oligomeric chitosan P0.1 = 0.1 mg/L polymeric chitosan P1 = 1 mg/L polymeric chitosan P5 = 5 mg/L polymeric chitosan
control O5 O1 O0.1 P5 P1 P0.1
3.0 0.5 1.0 1.5 2.0 2.5
Dry weight(g)
0.0 control O5 O1 O0.1 P5 P1 P0.1
O0.1 = 0.1 mg/L oligomeric chitosan O1 = 1 mg/L oligomeric chitosan O5 = 5 mg/L oligomeric chitosan P0.1 = 0.1 mg/L polymeric chitosan P1 = 1 mg/L polymeric chitosan P5 = 5 mg/L polymeric chitosan
5 1 2 3 4
Weight loss percentage
control O5 O1 O0.1 P5 P1 P0.1
O0.1 = 0.1 mg/L oligomeric chitosan O1 = 1 mg/L oligomeric chitosan O5 = 5 mg/L oligomeric chitosan P0.1 = 0.1 mg/L polymeric chitosan P1 = 1 mg/L polymeric chitosan P5 = 5 mg/L polymeric chitosan
Nge et al 2006 Nge et al., 2006
Chitosan concentration (mg/L) Fresh weight (g) after three months Control
3.02 ± 0.33abcdef 10 4 08 ± 1 26abc
Pornpienpakdee et al.,2010
P-80
10 4.08 ± 1.26abc 20 4.03 ± 1.24abc 40 3.29 ± 1.43abcde 80 0.73 ± 0.16f
O-80
10 2.83 ± 0.97bcdef 20 3.51 ± 0.74abcd 40 1.89 ± 0.30cdef 80 0.77 ± 0.22f
stomatal opening in tomato leaf epidermis. Note that 10 mM ascorbic acid suppressed the inhibitory effect of chitosan (200 g/mL ) on stomatal
(n = 120) of three to four independent experiments. Lee et al.,1999
1 mg/L oligomeric chitosan with 80 degree of
Environment and Plant Physiology Research Environment and Plant Physiology Research