Photosynthetica 1998, 35(1):41-46 | DOI: 10.1023/A:1006809528852

Longevity and factors influencing photosynthesis in tea leaves

R. Raj Kumar1, L. Manivel1, S. Marimuthu1
1 UPASI Tea Research Institute, Tamil Nadu, India

Quadratic relationship between the age of a tea leaf and the net photosynthetic rate (PN) has been found. A progressive increase in PN was recorded for four months. Then the PN slowly declined, yet even seven-month-old tea leaves sustained a low PN. In a tea shoot, the PN increased from the first leaf onwards. Besides the physiological maturity and proximity, photon flux density (PFD) played an important role in reducing the PN. The tea leaf PN was influenced by cultivation procedures which in turn disrupted the quantum of PFD transmitted through the canopy.

Additional key words: Camellia assamica ssp. assamica; irradiance; leaf age and insertion; photon flux density; spectral distribution in canopy

Prepublished online: March 1, 1998; Published: January 1, 1998  Show citation

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Raj Kumar, R., Manivel, L., & Marimuthu, S. (1998). Longevity and factors influencing photosynthesis in tea leaves. Photosynthetica, 35(1), 41-46. doi: 10.1023/A:1006809528852
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