Table 7.
Correlation matrix (Pearson coefficients) of endogenous sugar levels and of physiological traits after transfer in the absence of atrazine
| Fv/Fm | Chlorophyll content | Carotenoid content | GlcEoD | SucEoD | FruEoD | Reducing sugarsEoD | Total sugarsEoD | GlcEoN | SucEoN | FruEoN | Reducing sugarsEoN | Total sugarsEoN | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fv/Fm | – | ||||||||||||
| Chlorophyll content | −0·298 | – | |||||||||||
| Carotenoid content | −0·327 | 0·970*** | – | ||||||||||
| GlcEoD | 0·223 | −0·202 | −0·185 | – | |||||||||
| SucEoD | 0·078 | 0·332 | 0·316 | 0·804** | – | ||||||||
| FruEoD | 0·101 | 0·028 | 0·024 | 0·803** | 0·841*** | – | |||||||
| Reducing sugarsEoD | 0·207 | −0·166 | −0·152 | 0·994*** | 0·835*** | 0·864*** | – | ||||||
| Total sugarsEoD | 0·171 | −0·002 | 0·002 | 0·967*** | 0·924*** | 0·890*** | 0·982*** | – | |||||
| GlcEoN | −0·072 | 0·248 | 0·297 | 0·650* | 0·635* | 0·401 | 0·623* | 0·651* | – | ||||
| SucEoN | 0·383 | −0·288 | −0·315 | −0·168 | -0·289 | −0·353 | −0·472 | −0·192 | −0·394 | – | |||
| FruEoN | −0·533 | 0·396 | 0·376 | 0·086 | 0·309 | 0·295 | 0·646* | 0·537* | 0·468 | −0·545 | – | ||
| Reducing sugarsEoN | −0·191 | 0·310 | 0·348 | 0·582 | 0·623* | 0·417 | 0·569 | 0·609* | 0·977*** | −0·472 | 0·646* | – | |
| Total sugarsEoN | −0·085 | 0·249 | 0·282 | 0·592 | 0·597 | 0·347 | 0·565 | 0·597 | 0·977*** | −0·192 | 0·537 | 0·956*** | – |
Absolute levels of physiological traits (Fv/Fm, shoot chlorophyll content and shoot carotenoid content) were measured as described in the Methods in plantlets grown for 2 weeks in the absence of atrazine and transferred for 5 d to control medium in the absence of atrazine. Absolute levels of endogenous sugars were measured as described in the Methods in shoots of plantlets grown for 2 weeks in the absence of atrazine. Soluble sugar contents were measured at the end of day (EoD) and at the end of night (EoN). The whole set of accessions and of data was analysed. *** P < 0·001; ** P < 0·01; * P < 0·05.