Photosynthesis and biomass allocation of cotton as affected by deep-layer water and fertilizer application depth

Title:

Photosynthesis and biomass allocation of cotton as affected by deep-layer water and fertilizer application depth

Creator:

Chen, Z. K., Niu, Y. P., Ma, H., Hafeez, A., Luo, H. H., and Zhang, W. F.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:7a39d7da-c5b7-45d2-bdb9-80f69a60b217
uuid:7a39d7da-c5b7-45d2-bdb9-80f69a60b217
issn:0300-3604
doi:10.1007/s11099-016-0675-y

Subject:

obecná botanika, general botany, chlorophyll fluorescence, dry mass, fertigation, gas exchange, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Available water stored in deep soil layers could increase the photosynthetic capacity of cotton. It was hypothesized that the photosynthesis of cotton would be enhanced by changing the fertilizer application depth under different deep-layer water conditions. We examined two deep-layer water levels, i.e., well-watered (W80) and not watered (W0), combined with surface application (F10) and deep application (F30) of basal fertilizer. Compared to W0, W80 resulted in increased leaf area (LA), photosynthetic pigment contents, maximal PSII efficiency (Fv/Fm), effective quantum yield of PSII (YII) and PSI (YI), electron transport rate of PSII (ETRII) and PSI (ETRI). W80 also increased the aboveground and root dry mass by 39 and 0.6%, respectively, and decreased the root/shoot ratio by 40-73%. Under the W0 condition, higher values of Fv/Fm, YII, YI, ETRII, and ETRI were measured for F10 compared to F30 after 69 d from emergence. Under the W80 condition, cotton plants with F10 showed higher LA, Fv/Fm, YII, YI, ETRII, and ETRI, but there were no significant differences in the photosynthetic pigments compared to F30. Our results suggest that sufficient water in deeper soil layers and the surface application of basal fertilizer could increase photosynthetic activity and efficiency, which promoted aboveground dry mass accumulation and partitioning towards reproductive organs., Z. K. Chen, Y. P. Niu, H. Ma, A. Hafeez, H. H. Luo, W. F. Zhang., and Obsahuje seznam literatury

Language:

Multiple languages

Rights:

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

Coverage:

638-647

Source:

Photosynthetica | 2017 Volume:55 | Number:4

Harvested from:

CDK

Metadata only:

false