Table 2.
Linear regression of rice yield (Y) against total crop N uptake (Nmax) and one other parameter trait of both well-watered and drought-stressed input parameters (n = 96; for definition of these traits, see Table 1)
| Equation | b0 | b1 | b2 | R2 |
|---|---|---|---|---|
| Y = b0 + b1Nmax | −15·43/–62·61 | 44·49***/37·13*** | 0·576/0·592 | |
| Y = b0 + b1Nmax + b2SW | −39·73/–44·54 | 43·86***/37·37*** | 1356·6/–881·1 | 0·577/0·593 |
| Y = b0 + b1Nmax + b2nSO | 466·60/86·83 | 47·11***/35·94*** | −35698·7***/–10033·9* | 0·749/0·614 |
| Y = b0 + b1Nmax + b2Hmax | 77·43/48·84 | 49·70***/40·49*** | −128·5**/–120·7*** | 0·609/0·646 |
| Y = b0 + b1Nmax + b2mV | 630·66/553·40 | 39·03***/29·32*** | −6·73***/–6·41*** | 0·668/0·714 |
| Y = b0 + b1Nmax + b2mR | −310·43/–339·14 | 38·54***/29·04*** | 15·69***/14·63*** | 0·669/0·710 |
| Y = b0 + b1Nmax + b2Sla | 161·52/92·18 | 42·74***/36·78*** | −8334·2*/–7903·0** | 0·598/0·625 |
Values are presented as ‘well-watered/drought-stressed’.
*, **, ***Significant at the 0·05, 0·01 and 0·001 probability levels, respectively.