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| Content Provider | Springer Nature Link |
|---|---|
| Author | Nautiyal, P.C. Ravindra, V. Joshi, Y.C. |
| Copyright Year | 1999 |
| Abstract | Net photosynthetic rate (P$_{N}$) was studied in field-grown peanut cv. GG 2 in relation to leaf position, time of day, reproductive-sink, and phenophase. In general, P$_{N}$ remained higher in the upper leaves (first from top to the fourth) than in the lower leaves (fifth to eighth). The mean P$_{N}$ of the leaves situated upper and the leaves lower in the canopy increased from the morning, reached a maximum during noon hours, and decreased thereafter. Between 09:00 to 10:00 h, P$_{N}$, stomatal conductance (g$_{s}$), and transpiration rate (E) in the upper leaves were higher than in the lower leaves, but between 12:00 and 13:00 h, these activities increased significantly in the lower leaves. Highest P$_{N}$ was found during pod-development phase. Removal of flowers, and hence of active reproductive-sink, decreased plant height and number of leaves, and initiated accumulation of photosynthates in the leaves. The P$_{N}$ per unit leaf area in plants with reproductive-sink (WRS) was similar to those without reproductive-sink (WORS). However, leaf area of WORS plants decreased significantly, mainly due to the reduction in number of leaves. No feed-back inhibition of P$_{N}$ (per unit leaf area) was found despite accumulation of photosynthates in the leaves as a result of removal of the active reproductive-sink. |
| Starting Page | 129 |
| Ending Page | 138 |
| Page Count | 10 |
| File Format | |
| ISSN | 03003604 |
| Journal | Photosynthetica |
| Volume Number | 36 |
| Issue Number | 1-2 |
| e-ISSN | 15739058 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 1999-01-01 |
| Publisher Place | Dordrecht |
| Access Restriction | Subscribed |
| Subject Keyword | Plant Physiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physiology Plant Science |
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