Photosynthetic and growth responses of Camelina sativa (L.) Crantz to varying nitrogen and soil water status

Title:

Photosynthetic and growth responses of Camelina sativa (L.) Crantz to varying nitrogen and soil water status

Creator:

Pan, X., Lada, R., Caldwell, C. D., and Falk, K. C.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:26675e6d-b23a-471d-8dd4-84bf08821bf1
uuid:26675e6d-b23a-471d-8dd4-84bf08821bf1
issn:0300-3604
doi:10.1007/s11099-011-0035-x

Subject:

botanika, botany, instantaneous water-use efficiency, net photosynthesis, nitrogen supply, seed yield, soil water status, and transpiration rate

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Water and nitrogen (N) deficiency are two major constraints limiting the yield and quality of many oilseed crops worldwide. This study was designed to assess the response of Camelina sativa (L.) Crantz to the availability of N and water resources on photosynthesis and yield parameters. All the measured variables, which included plant height, root and shoot dry matter, root:shoot ratio, xylem pressure potential (XPP), yield components, photosynthetic parameters, and instantaneous water-use efficiency (WUE) were remarkably influenced by water and nitrogen supply. Net photosynthetic rate (PN) and yield components were significantly decreased more by water deficit than by N deficiency. XPP, stomatal conductance (gs), and intercellular CO2 concentration (C i) decreased substantially as the water deficit increased irrespective of the level of N application. WUE at the high N supply [100 and 150 kg(N) ha-1] dropped in a large degree as the increased water deficit due to a larger decrease in PN than transpiration rate (E). The results of this study suggest that the regulative capacity of N supply on photosynthetic and plant growth response is significantly affected by soil water status and C. sativa is more sensitive to water deficit than N supply. and X. Pan ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

316-320

Source:

Photosynthetica | 2011 Volume:49 | Number:2

Harvested from:

CDK

Metadata only:

false