Photosynthetic and physiological responses of foxtail millet (Setaria italica L.) to low-light stress during grain-filling stage

Title:

Photosynthetic and physiological responses of foxtail millet (Setaria italica L.) to low-light stress during grain-filling stage

Creator:

Yuan, X. Y., Zhang, L. G., Huang, L., Qi, X., Wen, Y. Y., Dong, S. Q., Song, X. E., Wang, H. F., and Guo, P. Y.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:efe3a15c-fb92-4bbe-8203-8e3b4780d086
uuid:efe3a15c-fb92-4bbe-8203-8e3b4780d086
issn:0300-3604
doi:10.1007/s11099-016-0645-4

Subject:

agronomické charakteristiky, obsah chlorofylu, fluorescence chlorofylu, sklizeň, bér italský, agronomic characteristics, chlorophyll content, chlorophyll fluorescence, photosynthetic physiology, yield, foxtail millet, Setaria italica, low-light stress, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Two foxtail millet (Setaria italica L.) varieties were subjected to different shading intensity treatments during a grain-filling stage in a field experiment in order to clarify physiological mechanisms of low-light effects on the yield. Our results showed that the grain fresh mass per panicle, yield, photosynthetic pigment contents, net photosynthetic rate, stomatal conductance, effective quantum yield of PSII photochemistry, and electron transport rate decreased with the increase of shading intensity, whereas the intercellular CO2 concentration increased in both varieties. In addition, shading changed a double-peak diurnal variation of photosynthesis to a one-peak curve. In conclusion, the lower yield of foxtail millet was caused mainly by a reduction of grain mass assimilated, a decline in chlorophyll content, and the low photosynthetic rate due to low light during the grain-filling stage. Reduced light energy absorption and conversion, restricted electron transfer, and reduced stomatal conductance might cause the decrease in photosynthesis., X. Y. Yuan, L. G. Zhang, L. Huang, X. Qi, Y. Y. Wen, S. Q. Dong, X. E. Song, H. F. Wang, P. Y. Guo., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

491-500

Source:

Photosynthetica | 2017 Volume:55 | Number:3

Harvested from:

CDK

Metadata only:

false