Full TGIF Record # 4745
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Author(s):Sibma, L.; Louwerse, W.
Author Affiliation:Centre for Agrobiological Research, Wageningen, Netherlands
Title:The effect of changes in crop structure on photosynthesis, dry matter production and chemical composition of Lolium perenne
Section:Biological fundamentals of yield formation with grasses and legumes: Physiological and morphological fundamentals of yield formation
Other records with the "Biological fundamentals of yield formation with grasses and legumes: Physiological and morphological fundamentals of yield formation" Section
Source:International Grassland Congress, Proceedings. Vol. 1, 1977, p. 171-176.
# of Pages:6
Publishing Information:Leipzig, German Democratic Republic
Keywords:TIC Keywords: Crops; Photosynthesis; Dry weight; Chemical composition; Lolium perenne; Leaves
Abstract/Contents:"To study the effects of changes in leaf position in perennial ryegrass during the growing season, the leaf position was changed with wide meshed wire netting in field and greenhouse experiments. CO2 measurements with a mobile unit showed that changing the leaf position from erectophile to planophile decreased the carbohydrate production by 30% and the proportional recovery of the production occurred when the leaves were replaced in the original erectophile position. Throughout a single growing period the negative effect of a planophile leaf position on dry matter production above ground was 10% at the highest. This was associated with lower dry matter and carbohydrate contents. The total nitrogen and nitrate percentages, on the contrary, were higher. Artificial changes to more planophile leaf positions changed the chemical composition in the same direction as that found during the growing season. It is concluded that a change in the leaf position could be one of the causes of the lower production in the later part of the growing season."
Language:English
References:5
Note:Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sibma, L., and W. Louwerse. 1977. The effect of changes in crop structure on photosynthesis, dry matter production and chemical composition of Lolium perenne. Int. Grassland Congress Proc. 1:p. 171-176.
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