Seasonal dynamics of photosynthesis and total carbon gain in bearing and nonbearing pistachio (Pistacia vera L.) shoots

Title:

Seasonal dynamics of photosynthesis and total carbon gain in bearing and nonbearing pistachio (Pistacia vera L.) shoots

Creator:

Marino, G., La Mantia, M., Caruso, T., and Marra, F. P.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:e984aa03-6319-4f13-b306-ddff2fa8714c
uuid:e984aa03-6319-4f13-b306-ddff2fa8714c
issn:0300-3604
doi:10.1007/s11099-017-0752-x

Subject:

alternativní ložisko, karbohydráty, křivka reakce na světlo, fotosyntetická hustota fotonového toku, alternate bearing, bud drop, carbohydrates, light-response curve, photosynthetic photon flux density, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Seasonal changes in leaf gas exchange, assimilation response to light and leaf area were monitored in bearing and nonbearing pistachio shoots. Shoot bearing status did not directly affect leaf photosynthetic rate. However, photosynthetic light-response curves strongly varied during the season demonstrating the dominant effect of the tree’s seasonal phenology on assimilation. Early in the season low photosynthetic rates were associated with high rates of dark respiration indicating limited photosynthesis in the young leaves. As leaves matured, dark respiration decreased and assimilation reached maximum values. Photosynthetic efficiency was strongly reduced late in the season due to leaf age and senescence. Fruit load precipitated an early leaf senescence and drop that resulted in a 53% decrease in leaf area in bearing vs. nonbearing shoots, strongly decreasing the seasonal photosynthetic performance of bearing shoots. Bearing shoots produced a 26% lower seasonal carbon gain compared to nonbearing shoots., G. Marino, M. La Mantia, T. Caruso, F. P. Marra., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

932-941

Source:

Photosynthetica | 2018 Volume:56 | Number:3

Harvested from:

CDK

Metadata only:

false