Сводный каталог книг

[Текст] : progress and prospects / Ed. by F.A. Valentine. - New York ; Berlin ; Heidelberg : Springer-Verlag, 1988. - 466 с. : 36 illustrations. - 43.20 р.
Библиогр: at the end of te papers%Index: p. 431-466%ISBN 0-387-96848-2; ISBN 3-540-96848-2

УДК

634.9

Аннотация: This volume presents a broad survey of contemporary research in basic plant science and genetic engineering, and the application of these fields to increased forest and crop production of raw materials for food, feed, and chemicals. Studies on artificial seeds from somatic embryos and the bioconversion of lignin and cellulosic materials for food, feed, and chemicals will be of special interest to the reader. Researchers in all fields of plant science and plant molecular biology will find the wealth of basic and practical information contained in this volume espacially useful for their work

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[Text] = Mosail-aneuploid embryo i polyembryonalt granfro (Picea abies (L.) Karst.) / M. Simak, A. Gustafsson, K. Ching. - Stockholm : Skogshogskolan, 1968. - 8 p. : рис. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 67). - eng. - Библиогр. в конце ст. - 0.10 р.

УДК

06

Аннотация: In this ivestigation, the chromosome number in the embryos of polyembryonal Picea abies seeds was determined. Polyembryony in seeds of Narway spruce is of rather common occurrence in the northern regions of Scandinavia. The selection of such seeds for experimental purposes can be easily made with the help of x-ray radiography.Among 220 polyembryonal seeds investigated there was one with two embryos. One of the embryos was normal (2n=24), the other was a mosaic aneuploid with chromosome number ranging from 12 to 24. Some other cytological abnormalities were also observed in this embryo.


Доп.точки доступа:
Gustafsson, A.; Ching, K.
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[Text] = Froutveckling efter sjalvpollinering och korspollinering av tall, Pinus silvestris L. : научное издание / C.P. Forshell. - Stockholm : Skogshogskolan, 1974. - 37 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 118). - eng. - Библиогр.: с. 36-37. - ISBN 91-38-01972-8 : 0.50 р.

УДК

06

Аннотация: The development of pollen tubes and ovules and the formtion of embryos and endosperm after different types of pollination: self-pollination, cross-pollination and wind-pollination were studied in ten clones of Pinus silvestris. Pollination and fertilization took place in all types of pollination. At a certain stage 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-pollination, considerably lower after wind-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-pollination may to some extent involve self-pollination. No clone was found to be quite self-sterile, but the differences in self-fertility between the clones were rather great.

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[Text] = Sambandet mellan sjalvbefruktning, tomfro och sjalvpollineringsfro som en foljd av polyembryoni : научное издание / D. Lindgren. - Stockholm : Skogshogskolan, 1975. - 24 p. : рис., табл. - (Studia Forestalia Suecica, ISSN 0039-3150 ; № 126). - eng. - Библиогр.: с. 24. - ISBN 91-38-02288-5 : 0.30 р.

УДК

06

Аннотация: The presence of polyembryony is of considerable importance for the relationship between the factors . Firstly the situation where all outbred embryos ara viable is considered and later the model is extended to the situation where outbred embryos are allowed to die

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