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Web URL(s): | https://academic.oup.com/aob/article/82/6/835/2587953/ Last checked: 03/01/2017 Requires: PDF Reader |
Publication Type:
| Refereed |
Author(s): | Warringa, J. W.;
De Visser, R.;
Kreuzer, A. D. H. |
Author Affiliation: | DLO Research Institute for Agrobiology and Soil Fertility (AB-DLO), P.O. Box 14, 6700 AA Wageningen, The Netherlands and warringa: Wageningen Agricultural University, Department of Agronomy, Wageningen, The Netherlands |
Title: | Seed weight in Lolium perenne as affected by interactions among sedds within the inflorescence |
Source: | Annals of Botany. Vol. 82, No. 6, December 1998, p. 835-841. |
Publishing Information: | London, Oxford University Press |
# of Pages: | 7 |
Keywords: | TIC Keywords: Lolium perenne; Seed weight; Seedhead development; Cultivar variation
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Abstract/Contents: | "Little is known about the interactions between seeds within the inflorescence of perennial ryegrass (Lolium perenne L.) and their effect on final seed weight. These relations were investigated in two glass house experiments using two genotypes, by reducing the number of seeds in an inflorescence at anthesis. In the first experiment, entire spikelets were removed to study the relations between seeds in different spikelets. The effects on seed dry weight were not proportional to the number of spikelets removed. In one genotype, removal of two-thirds of the spikelets increased seed dry weight of the remaining seeds by 15%. In the other genotype, such trteatment did not increase seed dry weight. In the second experiment, investigating seed interactions within a spikelet, either two proximal seeds or two central seeds were maintained in a spikelet by removing the other ovules in combination with no or 75% shading. Shading by 75% reduced seed dry weight by about 10%. In the unshaded treatment, seed dry weight was not affected by ovule removal. Under shading, the central seeds in a spikelet were about 12% heavier if they grew alone, in contrast to the proximal seeds. The effects of a reduction in seed number on seed dry weight were not related to the final nitrogen concentration of seeds. These experiments show that assimilate partitioning and the relationship between seeds in the inflorescence of perennial ryegrass are already largely determined at anthesis; increasing seed yield by manipulations after anthesis is not feasible." |
Language: | English |
References: | 34 |
Note: | Tables Figures |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Warringa, J. W., and R. De Visser. 1998. Seed weight in Lolium perenne as affected by interactions among sedds within the inflorescence. Ann. Bot. 82(6):p. 835-841. |
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| Web URL(s): https://academic.oup.com/aob/article/82/6/835/2587953/ Last checked: 03/01/2017 Requires: PDF Reader |
| MSU catalog number: QK 1 .A53 |
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