scholarly journals Relationship between dry matter production and carbon dioxide absorption in seedlings of Scots pine (Pinus silvestris L.) in their second vegetation season

2015 ◽  
Vol 40 (2) ◽  
pp. 243-256
Author(s):  
W. Żelawski ◽  
J. Kucharska ◽  
J. Kinelska

Accumulation of dry matter in needles, lignified stems and roots during the second vegetation season was compared with seasonal changes in photosynthesis and respiration activities of the se organs. Whereas growth analysis concerned plants growing at nearly natural course of external conditions, gas exchange determinations were made at constant laboratory conditions. For comparison of dry matter production and photosynthetic ability of a plant new terms „assimilation capacity" and „efficiency of assimilation" were introduced as possible expressions of photosynthetic productivity. Two ecotypes of Scots pine originating from lowland and highland regions of the country exhibited slightly different pattern of the investigated characteristics.

1993 ◽  
Vol 23 (8) ◽  
pp. 1639-1644 ◽  
Author(s):  
Erik Valinger

The effects of thinning and nitrogen fertilization, singly and in combination, on growth of 45-year-old Scots pine (Pinussylvestris L.) trees in northern Sweden were examined for 5 years after treatment. Annual examination of trees determined height growth, diameter growth, crown development, annual biomass increment, aboveground biomass allocation, and needle efficiency in relation to treatments. Nitrogen fertilization increased total dry matter production. The combination of thinning and nitrogen fertilization increased total dry matter production per tree more than the additive effects of thinning and nitrogen fertilization singly. Dry matter production per hectare was increased by nitrogen fertilization. Needle efficiency, i.e., total annual aboveground biomass production per unit of needle mass, was also increased by nitrogen fertilization. The increased aboveground production after nitrogen fertilization resulted from both an increase in biomass of needles and from the increased needle efficiency. The allocation pattern indicated that an increased production of stemwood was a result of a larger biomass of needles. An increase in cone production of the control trees was associated with a decrease in needle efficiency.


2005 ◽  
Vol 33 (1) ◽  
pp. 377-380
Author(s):  
Erzsébet Nádasy ◽  
Gábor Wágner

2013 ◽  
Vol 38 (10) ◽  
pp. 1884-1890 ◽  
Author(s):  
Ren-He ZHANG ◽  
Dong-Wei GUO ◽  
Xing-Hua ZHANG ◽  
Hai-Dong LU ◽  
Jian-Chao LIU ◽  
...  

2011 ◽  
Vol 37 (8) ◽  
pp. 1432-1440
Author(s):  
Cheng-Yan ZHENG ◽  
Shi-Ming CUI ◽  
Dong WANG ◽  
Zhen-Wen YU ◽  
Yong-Li ZHANG ◽  
...  

Crop Science ◽  
2002 ◽  
Vol 42 (1) ◽  
pp. 146 ◽  
Author(s):  
P. Q. Craufurd ◽  
P. V. Vara Prasad ◽  
R. J. Summerfield

2010 ◽  
Vol 1 (1) ◽  
pp. 83-83 ◽  
Author(s):  
G Tuñon ◽  
E Kennedy ◽  
D Hennessy ◽  
P Kemp ◽  
N Lopez Villalobos ◽  
...  

2021 ◽  
Vol 265 ◽  
pp. 108104
Author(s):  
Santiago Julián Kelly ◽  
María Gabriela Cano ◽  
Diego Darío Fanello ◽  
Eduardo Alberto Tambussi ◽  
Juan José Guiamet

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