MARC details
| 000 -LEADER |
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| fixed length control field |
03430nam a22003377a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G93651 |
| 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 |
20230704201320.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
121211s2009||||cc | ||0|| | e eneng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MX-TxCIM |
| 041 ## - LANGUAGE CODE |
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| Language code of text/sound track or separate title |
eng |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
CIS-5787 |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Magorokosho, C. |
| Miscellaneous information |
Formerly Global Maize Program |
| Field link and sequence number |
INT2714 |
| 9 (RLIN) |
854 |
| 245 10 - TITLE STATEMENT |
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| Title |
Genetic diversity and agronomic performance of southern african maize varieties under abiotic stresses |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Place of publication, distribution, etc. |
Shangai, China : |
| Name of publisher, distributor, etc. |
SAGC, |
| Date of publication, distribution, etc. |
2009. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
1 page |
| 500 ## - GENERAL NOTE |
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| General note |
Poster Abstract |
| 500 ## - GENERAL NOTE |
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| General note |
Presented at International Conference on Integrated Approaches to Improve Crop production Under Drougt-Prone Environments (INTERDROUGHT), 3; Shangai, China, 11-16 Oct, 2009 |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Large scale and planned introduction of maize (Zea mays L.) in southern Africa was accomplished during the last 100 years. Since then, smallholder farmers and breeders have been selecting varieties best adapted to their specific growing conditions and market needs. A study was conducted in 2004 and 2005 to assess the variability and performance of a core set of maize varieties collected in Zimbabwe, Zambia and Malawi. A total of 108 varieties comprising ancestral open pollinated varieties (OPV) introductions originating from the USA, early generation OPVs developed in southern Africa around the 1900s, traditional landraces and improved varieties were evaluated under low soil nitrogen, low soil pH, drought stress, random stress, and under optimum moisture and fertilizer levels. Results obtained showed the existence of considerable variation in agronomic traits under the different environments. Differences among the accessions, type of accessions (landraces, ancestors, early OPVs and improved) were significant for most of the traits studied. Genotype x Environment (GxE) interactions were also significant. Agronomic performance of maize varieties under different environments was used to create dendrograms, where materials were clustered into groups based on respective performance under specific environments. Estimates of broad sense heritabilities varied depending on traits and testing environments. However, these estimates were generally larger for each trait in the environment where the variance of that trait was highest. Genetic and phenotypic correlation coefficients also varied depending on traits and testing environments. Biplots constructed revealed which traits were closely related for each environment. Generally improved varieties outperformed landraces under all environments, but there were notable exceptions with many landraces yielding as much as improved varieties. Landraces were more stable than improved varieties across test environments, but improved varieties were more responsive to favorable growing conditions. The most promising landraces for pre-breeding and further investigation were identified. |
| 536 ## - FUNDING INFORMATION NOTE |
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| Text of note |
Global Maize Program|Research and Partnership Program |
| 546 ## - LANGUAGE NOTE |
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| Language note |
Text in English |
| 594 ## - STAFFID |
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| StaffID |
INT1888|INT2714 |
| 595 ## - COLLECTION |
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| Collection |
CIMMYT Staff Publications Collection |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| 9 (RLIN) |
1130 |
| Topical term or geographic name as entry element |
Genetics |
| Source of heading or term |
AGROVOC |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Maize |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
1173 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Varieties |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
1303 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Banziger, M. |
| Miscellaneous information |
Research & Partnership Program |
| -- |
Excellence in Breeding |
| Field link and sequence number |
INT1888 |
| 9 (RLIN) |
834 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
6537 |
| Personal name |
Betrán, J. |
| 856 4# - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
http://libcatalog.cimmyt.org/Download/cis/G93651.pdf |
| Link text |
Access only for CIMMYT Staff |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Conference poster |
| Source of classification or shelving scheme |
Dewey Decimal Classification |