Effect of Root Restriction on the Growth, Photosynthesis Rate, and Source and Sink Relationship of Chilli (Capsicum annuum L.) Grown in Soilless Culture
Table 6
Chlorophyll a, b, total chlorophyll content and relative chlorophyll content for control and root-restricted chilli plants grown for 112 days after transplanting.
Parameters
Treatments
Days after transplant
14
28
42
56
Chlorophyll a
Control
1.208±0.02b
1.514±0.09a
1.651±0.14a
1.811±0.08a
(mg g−1fw)
Restricted
1.413±0.06a
1.707±0.05a
1.798±0.13a
1.814±0.03a
Chlorophyll b
Control
0.414±0.01b
0.445±0.04b
0.555±0.05a
0.658±0.05a
(mg g−1fw)
Restricted
0.478±0.02a
0.556±0.02a
0.598±0.04a
0.610±0.02a
Total chlorophyll content
Control
1.640±0.02b
1.982±0.11a
2.231±0.19a
2.496±0.18a
(mg g−1fw)
Restricted
1.913±0.08a
2.289±0.07a
2.424±0.18a
2.452±0.05a
Relative chl. content
Control
36.18±0.19b
45.23±0.61b
56.00±0.61b
51.65±0.50b
(SPAD unit)
Restricted
37.48±0.39a
48.83±0.26a
58.40±0.69a
58.13±0.48a
70
84
98
112
Chlorophyll a
Control
1.494±0.03a
1.829±0.09a
2.081±0.09a
1.911±0.09a
(mg g−1fw)
Restricted
1.501±0.05a
2.105±0.13a
1.923±0.08a
1.991±0.10a
Chlorophyll b
Control
0.466±0.01a
0.603±0.03a
0.710±0.03a
0.647±0.03a
(mg g−1fw)
Restricted
0.462±0.02a
0.617±0.07a
0.662±0.03a
0.693±0.03a
Total chlorophyll content
Control
1.982±0.05a
2.460±0.11a
2.822±0.13a
2.587±0.12a
(mg g−1fw)
Restricted
1.985±0.07a
2.753±0.25a
2.614±0.11a
2.714±0.13a
Relative chl. content
Control
58.38±0.15a
59.65±0.57a
60.30±0.61a
60.93±0.28a
(SPAD unit)
Restricted
57.23±0.27b
59.78±0.32a
60.98±0.86a
61.60±0.11a
Means followed by similar letters within a column for each parameter were not significantly different at based on t-test analysis ().
