Table 3.
Factors |
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---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A |
B |
SLN (g N m−2) |
SLP (g P m−2) |
Total P (g plant−1 × 10−3) |
Leaf area (cm2 plant−1) |
Amax (µmol CO2 m−2 s−1) |
QYE (µmol CO2 µmol Q−1 × 10−2) |
||||||||||||
10 ppm N | LP | 0·721 ± 0·067 | a | 0·045 ± 0·004 | c | 3·171 ± 0·368 | a | 117·7 ± 21·6 | a | 2·180 ± 0·253 | a | 0·230 ± 0·016 | a | ||||||
25 ppm N | LP | 0·812 ± 0·070 | ab | 0·042 ± 0·005 | bc | 3·412 ± 0·377 | a | 157·9 ± 24·3 | ab | 7·562 ± 0·620 | b | 1·001 ± 0·116 | b | ||||||
50 ppm N | LP | 0·871 ± 0·074 | abc | 0·038 ± 0·003 | abc | 3·571 ± 0·366 | a | 197·6 ± 19·5 | bcd | 12·110 ± 0·792 | c | 1·541 ± 0·144 | c | ||||||
100 ppm N | LP | 0·969 ± 0·099 | bcd | 0·034 ± 0·004 | abc | 3·850 ± 0·346 | a | 250·3 ± 20·3 | e | 15·039 ± 0·994 | d | 1·830 ± 0·180 | cd | ||||||
250 ppm N | LP | 1·036 ± 0·098 | cde | 0·031 ± 0·004 | ab | 4·128 ± 0·628 | a | 307·1 ± 25·6 | f | 17·166 ± 1·248 | ef | 2·140 ± 0·123 | d | ||||||
500 ppm N | LP | 1·111 ± 0·137 | de | 0·029 ± 0·003 | a | 4·309 ± 0·522 | a | 355·8 ± 30·8 | f | 18·374 ± 1·076 | fg | 2·320 ± 0·119 | de | ||||||
10 ppm N | HP | 1·098 ± 0·097 | de | 0·124 ± 0·010 | f | 9·903 ± 1·171 | b | 177·1 ± 21·7 | bc | 6·398 ± 0·516 | b | 2·739 ± 0·144 | e | ||||||
25 ppm N | HP | 1·230 ± 0·087 | ef | 0·120 ± 0·009 | f | 10·525 ± 0·972 | b | 210·8 ± 21·8 | cde | 12·391 ± 0·822 | c | 3·861 ± 0·176 | f | ||||||
50 ppm N | HP | 1·349 ± 0·122 | fg | 0·114 ± 0·008 | ef | 11·298 ± 1·129 | bc | 248·3 ± 27·2 | de | 16·145 ± 0·675 | de | 6·879 ± 0·379 | g | ||||||
100 ppm N | HP | 1·521 ± 0·095 | g | 0·105 ± 0·006 | e | 12·178 ± 1·157 | cd | 319·8 ± 30·1 | f | 19·108 ± 0·914 | g | 7·988 ± 0·610 | h | ||||||
250 ppm N | HP | 1·849 ± 0·126 | h | 0·093 ± 0·007 | d | 13·620 ± 1·012 | de | 433·2 ± 31·2 | g | 20·875 ± 1·246 | h | 8·742 ± 0·496 | i | ||||||
500 ppm N | HP | 2·227 ± 0·142 | i | 0·083 ± 0·008 | d | 14·929 ± 0·996 | e | 584·3 ± 38·6 | h | 21·692 ± 1·152 | h | 9·151 ± 0·498 | i | ||||||
n | 6 | 6 | 6 | 6 | 8 | 8 |
Low P (LP) plants were supplied with 0·5 mm P and high P (HP) plants were supplied with 1·6 mm P.
Values are means ± s.e.
Different letters indicate significant differences assessed by Tukey HSD test (P < 0·05) after performing three-way ANOVA with residual estimation.