Table 2.
The parameter values for the logistic curves (eqn 4: W = a/{1 + exp[−(t − b)/c]}) describing vegetative and reproductive growth together with the coefficient of determination (r2)
| Vegetative |
Panicle |
|||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cultivar |
Year |
a |
b |
c |
r2 |
a |
b |
c |
r2 |
|||||||||
| R72 | 1997 | 8·3 (0·26) | 43·0 (2·02) | 5·7 (2·12) | 0·90 | 15·7 (4·39) | 50·4 (8·50) | 14·5 (2·85) | 0·96 | |||||||||
| 1998 | 10·9 (0·31) | 45·3 (1·29) | 6·5 (1·21) | 0·98 | 13·9 (2·07) | 43·4 (3·69) | 9·2 (2·33) | 0·98 | ||||||||||
| 1999 | 8·2 (0·17) | 42·5 (0·92) | 6·1 (0·83) | 0·97 | 8·5 (0·59) | 38·9 (1·77) | 7·1 (1·54) | 0·93 | ||||||||||
| 2000 | 8·6 (0·22) | 45·4 (1·11) | 5·9 (1·07) | 0·96 | 10·2 (0·43) | 38·3 (1·09) | 7·8 (0·82) | 0·98 | ||||||||||
| 2001 | 8·4 (0·18) | 41·3 (0·65) | 7·4 (0·65) | 0·98 | 10·2 (0·47) | 40·5 (1·12) | 7·3 (0·71) | 0·99 | ||||||||||
| NPT | ||||||||||||||||||
| (IR65598-112-2) | 1997 | 12·5 (0·50) | 52·3 (4·02) | 7·9 (3·30) | 0·88 | 21·1 (12·34) | 58·5 (16·51) | 14·6 (4·35) | 0·97 | |||||||||
| (IR65564-44-5-1) | 1998 | 14·1 (0·44) | 50·3 (1·76) | 9·1 (1·46) | 0·97 | 13·8 (1·71) | 42·6 (3·01) | 9·0 (1·81) | 0·96 | |||||||||
| (IR68011-15-1-1) | 1999 | 12·2 (0·38) | 43·3 (1·80) | 9·0 (1·51) | 0·94 | 9·1 (0·53) | 35·2 (1·63) | 9·5 (1·06) | 0·98 | |||||||||
The numbers in parentheses are standard errors, the units of a are t ha−1, the units of b and c are days.