MARC details
| 000 -LEADER |
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| fixed length control field |
03710nam a22004697a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G65851 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MX-TxCIM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20240919020957.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
121211s ||||f| 0 p|p||0|| | |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
968-6923-93-4 |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MX-TxCIM |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
F30 |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
H50 |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER |
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| Classification number |
633.153 |
| Item number |
EDM |
| 110 2# - MAIN ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico) |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
835 |
| Personal name |
Ribaut, J.M. |
| Miscellaneous information |
Integrated Breeding Platform |
| Field link and sequence number |
INT1991 |
| Affiliation |
Developing Drought- and Low N-Tolerant Maize. Proceedings of a Symposium; El Batan, Tex. (Mexico); 25- 29 Mar 1996 |
| 245 00 - TITLE STATEMENT |
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| Title |
Changes in allelic frequencies in a tropical maize population under selection for drought tolerance |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Place of publication, distribution, etc. |
Mexico, DF (Mexico) |
| Name of publisher, distributor, etc. |
CIMMYT : |
| Date of publication, distribution, etc. |
1997 |
| 340 ## - PHYSICAL MEDIUM |
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| Material base and configuration |
Printed |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Selection for grain yield under severe water stress has often been considered inefficient because heritability generally declines as yield is reduced while environmental variance remains the same or increases. Under these conditions selection for secondary traits correlated with yield, Such as the anthesis- silking interval (ASI), may increase selection efficiency. Although ASI is a simple trait to measure in the field and has a relatively high heritability, it is not always possible to provide the stress levels required for efficient selection of this trait. CIMMYT physiologists conducted eight cycles of full-sib recurrent selection during the dry season for drought tolerance in the population 'Tuxpeño Sequia' based mainly on an index comprising increased grain yield and reduced ASI. In this study, we quantified changes in allelic frequencies over cycles of selection at loci of known map position. Through these changes identification of alleles involved in the expression of short or long ASI was possible, and may provide a rapid diagnostic tool in the future for screening lines or plants with potential drought tolerance in Tuxpeño germplasm. Changes in allele frequencies over cycles of selection (C0, C4 and C8; 116 plants randomly chosen from each cycle) were estimated using molecular markers. Loci distributed over the maize genome were assayed using RFLPs. Special attention was given to genomic regions responsible for expression of ASI, identified in a previous study using a cross between two inbreds derived mainly from Tuxpeño germplasm. There is strong evidence that the alleles of these two inbred lines are also present in this population. Allelic frequencies that either increased, decreased or remained stable were recorded for C8 relative to C0. Some major allele frequency changes were detected at loci located in genomic regions responsible for ASI expression, and the effects of these frequency changes were estimated. Implications of this analysis concerning the improvement of open-pollinated populations or lines using molecular markers are discussed. |
| 536 ## - FUNDING INFORMATION NOTE |
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| Text of note |
Generation Challenge Program |
| 546 ## - LANGUAGE NOTE |
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| Language note |
English |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
9802|AGRIS 9702|anterior|R97-98PROCE|FINAL9798 |
| 594 ## - STAFFID |
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| StaffID |
INT1991 |
| 595 ## - COLLECTION |
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| Collection |
CIMMYT Publications Collection |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Drought resistance |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| 9 (RLIN) |
1081 |
| Topical term or geographic name as entry element |
Drought stress |
| Miscellaneous information |
AGROVOC |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Flowering |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Genetic inheritance |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1211 |
| Topical term or geographic name as entry element |
Plant population |
| Miscellaneous information |
AGROVOC |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Selection |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Tropical zones |
| 653 0# - INDEX TERM--UNCONTROLLED |
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| Uncontrolled term |
CIMMYT |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1314 |
| Topical term or geographic name as entry element |
Zea mays |
| Miscellaneous information |
AGROVOC |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Edmeades, G.O., |
| Relator term |
coaut. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Edmeades, G.O.|Banziger, M.|Mickelson, H.R.|Peña-Valdivia, C.B. |
| Relator term |
eds. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
González de León, D., |
| Relator term |
coaut. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Hoisington, D.A., |
| Relator term |
coaut. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Huerta-Espino, J. |
| Miscellaneous information |
Global Wheat Program |
| Field link and sequence number |
CHUE01 |
| 9 (RLIN) |
397 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Conference proceedings |