Effect of fertilizer application on photosynthesis and oil yield of Jatropha curcas L.

Title:

Effect of fertilizer application on photosynthesis and oil yield of Jatropha curcas L.

Creator:

Yong, J. W. H., Ng, Y. F., Tan, S. N., and Chew, A. Y. L.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:d70a2e06-ff31-42c6-af93-000c413ee432
uuid:d70a2e06-ff31-42c6-af93-000c413ee432
issn:0300-3604
doi:10.1007/s11099-010-0026-3

Subject:

botanika, botany, biofuel, chlorophyll meter, Jatropha curcas L., leaf nitrogen content, oil, photosynthetic rates, and stable isotope

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The use of Jatropha curcas oil as a source of biofuel has been well-explored. However, the physiological and growth studies of J. curcas have received considerably lesser attention. In this study, leaf gas exchange measurements and leaf nitrogen content were determined for four varieties of J. curcas, grown in the field or in pots. Based on stable carbon isotope analysis (δ13C) and gas-exchange studies, J. curcas is a C3 sun plant and the range of leaf photosynthetic rates (or CO2 assimilation rates, PNmax) were typically between 7 and 25 μmol(CO2) m-2 s-1 and light saturation generally occurred beyond 800 μmol(quanta) m-2 s-1. Higher rates of leaf photosynthesis were generally obtained with the mature leaves. In addition, increased foliar PNmax were recorded in potted J. curcas variety Indiana with increasing nitrogen (N) nutrition levels. These plants also showed greater growth, increased leaf N content, higher maximum CO2 assimilation capacity (PNhighCO2) and chlorophyll (Chl) content, indicating the potential of optimizing the growth of Jatropha by varying fertilizer nutrient levels. A rapid assessment for leaf N using a nondestructive and portable Chl meter had been established for J. curcas. This approach will allow repeated sampling of the same plant over time and thus enable the monitoring of the appropriate levels of soil fertility to achieve good Jatropha plantation productivity. High N nutrition improved the overall plant oil yield by increasing the total number of fruits/seeds produced per plant, while not affecting the intrinsic seed oil content. and J. W. H. Yong ... [et al.].

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

208-218

Source:

Photosynthetica | 2010 Volume:48 | Number:2

Harvested from:

CDK

Metadata only:

false