Abstract
The rate of oxygen uptake was measured on sections of mature leaf tissue derived from two populations of Lolium perenne L. cv. S23, selected for contrasting rates of mature leaf respiration. Under conditions of sufficient nutrient supply, GL72 had a lower rate of respiration and a greater yield than GL66. The populations were exposed to important management variables to investigate their effect on the selection criterion, the two variables being nutrient supply and defoliation. Conditions of low nutrient supply were characterized by a similarity in respiration rate and a change in the regulation of respiration. Enzyme levels, rather than adenylates, controlled respiration. Weekly cutting induced activity of the otherwise latent alternative pathway.
| Original language | English |
|---|---|
| Pages (from-to) | 53-57 |
| Number of pages | 5 |
| Journal | Physiologia Plantarum |
| Volume | 66 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 1986 |
| Externally published | Yes |
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Respiration in mature leaves of Lolium perenne as affected by nutrient supply, cutting and competition. / Pilbeam, C. J.; Robson, M. J.; Lambers, H.
In: Physiologia Plantarum, Vol. 66, No. 1, 01.01.1986, p. 53-57.Research output: Contribution to journal › Article
TY - JOUR
T1 - Respiration in mature leaves of Lolium perenne as affected by nutrient supply, cutting and competition
AU - Pilbeam, C. J.
AU - Robson, M. J.
AU - Lambers, H.
PY - 1986/1/1
Y1 - 1986/1/1
N2 - The rate of oxygen uptake was measured on sections of mature leaf tissue derived from two populations of Lolium perenne L. cv. S23, selected for contrasting rates of mature leaf respiration. Under conditions of sufficient nutrient supply, GL72 had a lower rate of respiration and a greater yield than GL66. The populations were exposed to important management variables to investigate their effect on the selection criterion, the two variables being nutrient supply and defoliation. Conditions of low nutrient supply were characterized by a similarity in respiration rate and a change in the regulation of respiration. Enzyme levels, rather than adenylates, controlled respiration. Weekly cutting induced activity of the otherwise latent alternative pathway.
AB - The rate of oxygen uptake was measured on sections of mature leaf tissue derived from two populations of Lolium perenne L. cv. S23, selected for contrasting rates of mature leaf respiration. Under conditions of sufficient nutrient supply, GL72 had a lower rate of respiration and a greater yield than GL66. The populations were exposed to important management variables to investigate their effect on the selection criterion, the two variables being nutrient supply and defoliation. Conditions of low nutrient supply were characterized by a similarity in respiration rate and a change in the regulation of respiration. Enzyme levels, rather than adenylates, controlled respiration. Weekly cutting induced activity of the otherwise latent alternative pathway.
KW - Alternative respiratory pathway
KW - cytochrome pathway
KW - perennial ryegrass
KW - selection lines
KW - yield
UR - http://www.scopus.com/inward/record.url?scp=0008737461&partnerID=8YFLogxK
U2 - 10.1111/j.1399-3054.1986.tb01232.x
DO - 10.1111/j.1399-3054.1986.tb01232.x
M3 - Article
VL - 66
SP - 53
EP - 57
JO - Physiologia Plantarum
JF - Physiologia Plantarum
SN - 0031-9317
IS - 1
ER -