| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Agronomy, Plant Physiology, and Agroecology Division, Int. Rice Research Inst., P.O. Box. 933, Manila 1099, Philippines
* Corresponding author (speng.{at}irri.cgnet.com).
A field-derived relationship between maximum single leaf net photosynthetic rate under saturating light (Amax) and leaf N content per unit leaf area (Na) is not available for rice (Oryza sativa L.). The rice simulation model ORYZA1 estimates aboveground dry matter production based on the relationship between Amax and Na determined previously under greenhouse-growth chamber conditions. The objectives of this study were to establish to relationship between Amax and Na under field conditions and to determine whether the field-derived relationship could improve ORYZA1 estimation of aboveground dry matter production of tropical irrigated rice. Rice plants were grown in the field with different N rates in the 1993 dry season. The Amax and Na were determined at 38 and 88 d after transplanting. Aboveground dry matter was determined at physiological maturity. Dry matter production data at physiological maturity from four other field experiments were used for model evaluation. There was a close correlation between Amax and Na under field conditions (r2 = 0.88). Compared with the relationship between Amax and Na as determined under greenhouse-growth chamber conditions in previous studies, higher Amax was observed at low Na in this field study. When the field-derived relationship between Amax and Na was used, ORYZA1 estimation of dry matter production was improved for rice grown in tropical irrigated environments.
Received for publication January 4, 1995.
This article has been cited by other articles:
|
|
 |
|
  W. Yang, S. Peng, R. C. Laza, R. M. Visperas, and M. L. Dionisio-Sese Yield Gap Analysis between Dry and Wet Season Rice Crop Grown under High-Yielding Management Conditions Agron. J., August 11, 2008; 100(5): 1390 - 1395. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. K. Swain, S. Herath, B. C. Bhaskar, P. Krishnan, K. S. Rao, S. K. Nayak, and R. N. Dash Developing ORYZA 1N for Medium- and Long-Duration Rice: Variety Selection under Nonwaterstress Conditions Agron. J., February 6, 2007; 99(2): 428 - 440. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. Ohsumi, A. Hamasaki, H. Nakagawa, H. Yoshida, T. Shiraiwa, and T. Horie A Model Explaining Genotypic and Ontogenetic Variation of Leaf Photosynthetic Rate in Rice (Oryza sativa) Based on Leaf Nitrogen Content and Stomatal Conductance Ann. Bot., February 1, 2007; 99(2): 265 - 273. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. K. Shukla, J. K. Ladha, V. K. Singh, B. S. Dwivedi, V. Balasubramanian, R. K. Gupta, S. K. Sharma, Y. Singh, H. Pathak, P. S. Pandey, et al. Calibrating the Leaf Color Chart for Nitrogen Management in Different Genotypes of Rice and Wheat in a Systems Perspective Agron. J., November 1, 2004; 96(6): 1606 - 1621. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
W.-H. Yang, S. Peng, J. Huang, A. L. Sanico, R. J. Buresh, and C. Witt Using Leaf Color Charts to Estimate Leaf Nitrogen Status of Rice Agron. J., January 1, 2003; 95(1): 212 - 217. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Peng, J. C. Biswas, J. K. Ladha, P. Gyaneshwar, and Y. Chen Influence of Rhizobial Inoculation on Photosynthesis and Grain Yield of Rice Agron. J., July 1, 2002; 94(4): 925 - 929. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 P. Horton Prospects for crop improvement through the genetic manipulation of photosynthesis: morphological and biochemical aspects of light capture J. Exp. Bot., February 1, 2000; 51(90001): 475 - 485. [Abstract] [Full Text]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Agronomy Journal | Vadose Zone Journal | |||
| Journal of Natural Resources and Life Sciences Education |
Soil Science Society of America Journal | ||||
| Journal of Plant Registrations | Journal of Environmental Quality |
The Plant Genome | |||
