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Seed development after self-pollination and cross-pollination of Scots pine, Pinus sylvestris L

Plym Forshell, Christina (1974). Seed development after self-pollination and cross-pollination of Scots pine, Pinus sylvestris L. Technical Report. Stockholm: Predecessors to SLU > Royal School of Forestry, Sveriges lantbruksuniversitet. Studia forestalia Suecica ; 118
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Abstract

The development of pollen tubes and ovules and the formation of embryos and endorperm after different types of pollination: self-pollination, crosspollination and wind-pollination were studied in ten clones of Pinus sylvestris. Pollinization and fertilization took place in all types of pollination. At a certain state of development, however, embryos in some seeds began to degenerate. This degeneration was followed by a breaking down of the endosperm and resulted in empty seeds. The percentage of degenerated seeds was highest after self-pollinization, considerably lower after wind-pollination and smallest after cross-pollination. The results indicate that inviable zygotes, homozygous for lethal or sub-lethal genes, are formed after self-pollination and explain the high percentage of empty seeds usually found after this type of pollination. Wind-pollinization may to some extent involve self-pollination. No clone was found to be quite self-sterile, but the differences in selfertility~ between the clones were rather great.

Authors/Creators:Plym Forshell, Christina
Title:Seed development after self-pollination and cross-pollination of Scots pine, Pinus sylvestris L
Series/Journal:Studia forestalia Suecica (0039-3150)
Year of publishing :1974
Number:118
Number of Pages:37
Place of Publication:Stockholm
Publisher:Skogshögskolan
ISBN for printed version:91-38-01972-8
ISSN:0039-3150
Language:English
Publication Type:Report
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Plant breeding
Keywords:seeds, self-pollination, cross-pollination, Scots pine, Pinus sylvestris L.
URN:NBN:urn:nbn:se:slu:epsilon-9-80
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-9-80
ID Code:5693
Department:Predecessors to SLU > Royal School of Forestry
Deposited By: Skogsbiblioteket Umeå
Deposited On:14 Feb 2011 00:00
Metadata Last Modified:13 Nov 2015 13:57

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