MARC details
| 000 -LEADER |
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| fixed length control field |
02768nam a22004337a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G24957 |
| 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 |
20240313225235.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
121211s ||||f| 0 p|p||0|| | |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MX-TxCIM |
| 041 0# - LANGUAGE CODE |
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| Language code of text/sound track or separate title |
eng |
| 043 ## - GEOGRAPHIC AREA CODE |
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| Geographic area code |
US |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
F01 |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
F30 |
| 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) |
REP-4389 |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Timothy, D.H. |
| 9 (RLIN) |
9489 |
| 245 10 - TITLE STATEMENT |
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| Title |
Development and spread of improved maize varieties and hybrids in developing countries |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Place of publication, distribution, etc. |
Washington, DC (USA) : |
| Name of publisher, distributor, etc. |
AID, |
| Date of publication, distribution, etc. |
1988. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xi, 71 pages |
| 340 ## - PHYSICAL MEDIUM |
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| Material base and configuration |
Printed |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Maize is the third most important cereal crop in the developing world, after rice and wheat. Attempts have beed made over many years to improve maize varieties and hybrids used in developing countries. National and international programs have been involved. In the latter case, research has been concentrated at the International Maize and Wheat Improvement Center (CIMMYT) in Mexico and the International Institute of Tropical Agriculture (IITA) in Higeria. Both centers carry out their work in collaboration with national research programs. Although the adoption of high-yielding wheat varieties developed by CIMMYT and of rice developed by other centers has been well documented, the same is not true of maize. Part of the rearon is that the genetics of maize are quite different drom, and much more complicated than, wheat or rice. Improved varieties are not as easily identified visually. Also relatively little effort has been put into the measurement process. As a result, it is not well known how much impact the maize research programs have had at the farm level. This report is a first step in rectifiying this information gap. In attempts to identify the maize varieties, hybrids, population, pools, and lines developed by CIMMYT and IITA that are being used in national programs in developing nations. It also incorporates, where available, estimates of area planted with hybrids and improved varieties. Further work is needed to more fully document and the main gene pools and to verify and expand the statistical data at the national level. |
| 546 ## - LANGUAGE NOTE |
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| Language note |
Text in English |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
MIC 10203-R |
| 595 ## - COLLECTION |
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| Collection |
Reprints Collection |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Agronomic characters |
| 9 (RLIN) |
1008 |
| Source of heading or term |
AGROVOC |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Breeding methods |
| 9 (RLIN) |
1030 |
| Source of heading or term |
AGROVOC |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Cultivation |
| 9 (RLIN) |
1071 |
| Source of heading or term |
AGROVOC |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Germplasm |
| 9 (RLIN) |
1136 |
| Source of heading or term |
AGROVOC |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
International cooperation |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
4895 |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Crop production |
| 9 (RLIN) |
1063 |
| Source of heading or term |
AGROVOC |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Research |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
9142 |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Uses |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
18934 |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Varieties |
| 9 (RLIN) |
1303 |
| Source of heading or term |
AGROVOC |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1314 |
| Topical term or geographic name as entry element |
Zea mays |
| Source of heading or term |
AGROVOC |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1151 |
| Topical term or geographic name as entry element |
Hybrids |
| Source of heading or term |
AGROVOC |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Harvey, P.H |
| 9 (RLIN) |
27972 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Dowswell, C. |
| 9 (RLIN) |
8713 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Koha item type |
Book |
| Source of classification or shelving scheme |
Dewey Decimal Classification |