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Genic and genetic drift effects associated with intrapopulation recurrent selection in the SA3 maize population

By: Caviedes C., M.
Contributor(s): Lopes, A.S [coaut.] | Narro, L.A [coaut.] | Pandey, S [coaut.].
Material type: materialTypeLabelArticlePublisher: 2000Other title: Efeitos genicos e oscilacao genetica associados a selecao recorrente intrapopulacional na populacao de milho SA3.Subject(s): Acid soils | Agronomic characters | Brazil | Genetic variation | Genetic variation | Grain AGROVOC | Maize | Production | Recurrent selection | Selection responses | SA3 DQI | Zea mays AGROVOC | Genetics AGROVOC In: Pesquisa Agropecuaria Brasileira v. 35, no. 8, p. 1585-1593628598Summary: The effects of intrapopulation recurrent selection and of the genetic drift were evaluated on 20 cycles of selection for SA3 maize (Zea mays L. ) population, tolerant to acid soil conditions. A sample of eight cycles was used to estimate the response to selection for grain yield and other agronomic traits by the model proposed by Smith (1983). The genetic materials used included eight cycles perse, eight cyclesperse selfed, 28 F1's among cycles, 28 F1's among cycles selfed and 28 F1's recombined. The trials were evaluated at five environments under acid soils conditions in Brazil and Colombia. The estimates of response to selection (2ALI+2DLI) showed that selection process was not effective to improve grain yield and to reduce plant height. However, the selection procedure was efficient to reduce days to silk and to increase the number of ears per plant. The magnitude of genetic drift estimates (DQI) indicated that its effects did not limit the improvement of the characters evaluated.Collection: CIMMYT Staff Publications Collection
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Item type Current location Collection Call number Copy number Status Date due Barcode Item holds
Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection CIS-3255 (Browse shelf) 1 Available 628598
Total holds: 0

AGRIS 2002-016932

Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0100-204X

The effects of intrapopulation recurrent selection and of the genetic drift were evaluated on 20 cycles of selection for SA3 maize (Zea mays L. ) population, tolerant to acid soil conditions. A sample of eight cycles was used to estimate the response to selection for grain yield and other agronomic traits by the model proposed by Smith (1983). The genetic materials used included eight cycles perse, eight cyclesperse selfed, 28 F1's among cycles, 28 F1's among cycles selfed and 28 F1's recombined. The trials were evaluated at five environments under acid soils conditions in Brazil and Colombia. The estimates of response to selection (2ALI+2DLI) showed that selection process was not effective to improve grain yield and to reduce plant height. However, the selection procedure was efficient to reduce days to silk and to increase the number of ears per plant. The magnitude of genetic drift estimates (DQI) indicated that its effects did not limit the improvement of the characters evaluated.

Global Maize Program

English

Portuguese

0111|AL-Wheat Program|AL-ABC Program|R01JOURN|3

BR-ESALQ 1998 CAVIEDES D f

Maria del Carmen Nava

INT2062

CIMMYT Staff Publications Collection

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