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林木改良中育种群的概念应用和发展(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
1992年01期
Page:
86-89
Column:
研究论文
publishdate:
1900-01-01

Article Info:/Info

Title:
BREEDING GROUPS: THE CONCEPT, APPLICATIONS, AND DEVELOPMENT IN FOREST AND TREE IMPROVEMENT
Article ID:
1000-2006(1992)01-0086-04
Author(s):
Dang Hanmin
Central China Agricultural University
Keywords:
Super breeding populations Breeding groups Seed orchards Inbreeding
Classification number :
-
DOI:
10.3969/j.jssn.1000-2006.1992.01.020
Document Code:
A
Abstract:
Breeding groups, subdivisions of a breeding population composed of superior individuals, are equivalent to inbred lines in crop breeding. Breeding groups are being used to control inbreeding in a breeding population and to effectively achieve maximum genetic gains in some tree improvement programs of the United States. The use of breeding groups does not change the breeding values of the subdivided populations. The genetic variance of breeding values within a breeding group, however, will be increased depending on the degree of inbreeding in each group. Such variance change will increase the total genetic variation and offer a better chance for selection of desirable genotypes for successive generations of breeding groups. Furthermore, breeding groups will add only paper work to keep records separate for a tree improvement program manager, but they can be easily implemented in a forest tree improvement program without extra field work.

References

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Last Update: 1900-01-01