MARC details
| 000 -LEADER |
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| fixed length control field |
03386nab a22004217a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G67169 |
| 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 |
20240919021140.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
121211b |||p||p||||||| |z||| | |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
MX-TxCIM |
| 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) |
Look |
| Local cutter number (OCLC) ; Book number/undivided call number, CALL (RLIN) |
under journal title |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Castellanos, S. |
| 245 10 - TITLE STATEMENT |
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| Title |
Relative performance of testers to identify elite lines of corn (Zea mays L.) |
| Medium |
[Electronic Resource] |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Date of publication, distribution, etc. |
1998 |
| 340 ## - PHYSICAL MEDIUM |
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| Material base and configuration |
Printed |
| 500 ## - GENERAL NOTE |
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| General note |
Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0025-6153 |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc. |
Testcross evaluation is used to determine the relative potential of corn (Zea mays L.) lines in a hybrid breeding program. Choice of tester is important for efficient selection among lines for their potential in hybrids. Testcrosses among 21 lines and seven testers were evaluated at seven environments in Guatemala. The experimental design was a randomized complete block with a split-plot arrangement, where lines were assigned to whole plots and testers to subplots. The objectives of the study were to obtain information for choice of testers and to identify the more convenient tester to use in early testing for a hybrid program in which three-way and double-cross hybrids are commonly used. Data for yield and agronomic traits were recorded, but the combined analysis for yield (t/ha) was the main trait of interest. Differences among lines and among testers across environments were highly significant (P ≤ 0.01). Highly significant differences for the testers x lines interaction indicated that the testers ranked the lines differently. Coefficient of concordance (W) and Pearson correlations (r) suggested that the ranking of lines across testers was relatively consistent. Testcrosses with a single cross had the greatest average yield (6.48 t/ha). Based on the variance among testcrosses, estimates of general combining ability. correlation with the other testers, and acceptable performance itself, the single cross tester was suggested as the tester for the hybrid breeding program in Guatemala. Lines with good general combining ability for different hybrid combinations were identified. Three-way testcrosses superior to the hest check (lCTA HB-85) were identified for further evaluation as potential new hybrids for release. Significant correlations between yield and diseases (Southern corn rust caused by Puccinia polysora Underw and Northern corn leaf blight caused by Exserobilum turcicum Pass. = Helmintbosporium turcicum Pass. reflected the importance of emphasizing selection for disease resistance during line development. |
| 546 ## - LANGUAGE NOTE |
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| Language note |
English |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
9812|EE|R98-99ANALY|1 |
| 592 ## - HEADER |
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| Header |
US-IowaSU 1992 CASTELLANOS D f |
| 595 ## - COLLECTION |
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| Collection |
CIMMYT Staff Publications Collection |
| 595 ## - COLLECTION |
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| Collection |
Serials Collection |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Maize |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1173 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1213 |
| Topical term or geographic name as entry element |
Plant response |
| Source of heading or term |
AGROVOC |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Variety trials |
| 9 (RLIN) |
2474 |
| Source of heading or term |
AGROVOC |
| 650 #7 - 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 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Plant breeding |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1203 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
2367 |
| Topical term or geographic name as entry element |
Combining ability |
| Source of heading or term |
AGROVOC |
| 651 #7 - SUBJECT ADDED ENTRY--GEOGRAPHIC NAME |
|---|
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
5028 |
| Geographic name |
Guatemala |
| 653 0# - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Tropical maize CIMMYT |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Córdova, H.S., |
| Relator term |
coaut. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Hallauer, A.R., |
| Relator term |
coaut. |
| 9 (RLIN) |
516 |
| 740 ## - ADDED ENTRY--UNCONTROLLED RELATED/ANALYTICAL TITLE |
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| Uncontrolled related/analytical title |
67169 |
| 740 ## - ADDED ENTRY--UNCONTROLLED RELATED/ANALYTICAL TITLE |
|---|
| Uncontrolled related/analytical title |
70083 |
| 773 0# - HOST ITEM ENTRY |
|---|
| Title |
Maydica |
| Related parts |
v. 43, no. 3, p. 217-226 |
| 856 4# - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
http://hdl.handle.net/10883/1957 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Article |
| Source of classification or shelving scheme |
Dewey Decimal Classification |
| Suppress in OPAC |
No |