MARC details
| 000 -LEADER |
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| fixed length control field |
03769nab a22004697a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G39842 |
| 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 |
20231006175535.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
231006s1992 it |||p|op||| 00| 0 eng d |
| 022 ## - INTERNATIONAL STANDARD SERIAL NUMBER |
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| International Standard Serial Number |
0025-6153 |
| 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 |
IT |
| 072 #0 - SUBJECT CATEGORY CODE |
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| Subject category code |
F01 |
| 072 #0 - SUBJECT CATEGORY CODE |
|---|
| 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) |
CIS-1756 |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Vasal, S.K. |
| 9 (RLIN) |
5280 |
| 245 10 - TITLE STATEMENT |
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| Title |
Heterotic patterns of ninety-two white tropical CIMMYT maize lines |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Place of publication, distribution, etc. |
Bergamo (Italy) : |
| Name of publisher, distributor, etc. |
Istituto Sperimentale per la Cerealicoltura, |
| Date of publication, distribution, etc. |
1992. |
| 340 ## - PHYSICAL MEDIUM |
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| Material base and configuration |
Computer File 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 |
| 500 ## - GENERAL NOTE |
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| General note |
Tables, references p. 270 |
| 500 ## - GENERAL NOTE |
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| General note |
Peer review |
| 500 ## - GENERAL NOTE |
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| General note |
Open Access |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
Development of inbred-based populations which are heterotic to each other was considered one of the primary goals when CIMMYT started its hybrid maize program in 1985. The objectives of this study were to determine the combining ability and heterotic patterns of tropical maize (Zea mays L.) inbred lines developed at CIMMYT and to identify and form heterotic groups for the tropics. Ninety-two tropical late white inbred lines at S3-S6 levels of inbreeding derived. from nine CIMMYT populations and pools were crossed to four tester lines (two dent and two flint). The 368 line x tester combinations were divided into four sets, eachset comprising of crosses of 23 lines to the four testers and tested in multilocation trials during 1988 to 1990. Mean grain yield for the four sets ranged from 5.6 to 6.5 t/ha. General combining ability (GCA) and specific combining ability (SCA) estimates for grain yield were calculated using line x tester analysis. Twenty-one of the 34 lines from Population 21 had positive GCA estimates for yield. Of the nine lines tested from Population 43, seven showed positive GCA effects for yield. The four testers behaved differently for GCA effects in different sets except Tester 3 (Pop. 25) which showed positive GCA effects for yield in all the sets and in the combined data. SCA effects for yield were significant in each set. Several line x tester hybrid combinations yielded more than 7 t/ha. Generally, crosses of lines from Population 43 to Populations 32 or 25 had higher grain yields. Interpopulation crosses were usually superior to intrapopulation crosses. A few crosses within Population 21 and Population 25 gave yields comparable to some of the best interpopulation combinations. Based. on the testcross data, two tropical heterotic groups THG "A" and THG "B" were formed which will be useful for future hybrid development work at CIMMYT and national programs in the tropics. Several of the lines included in this study were announced as CIMMYT maize lines (CML) during 1991, and are available to both public and private breeders. Twelve of the 20 top-yielding crosses (five from each set) involved CML lines. |
| 546 ## - LANGUAGE NOTE |
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| Language note |
Text in English |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
R92ANALY|MP|12541-R|3 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Combining ability |
| 9 (RLIN) |
2367 |
| Source of heading or term |
AGROVOC |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Germplasm |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
1136 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Inbred lines |
| Source of heading or term |
AGROVOC |
| 9 (RLIN) |
1155 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
1211 |
| Topical term or geographic name as entry element |
Plant population |
| Source of heading or term |
AGROVOC |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Yield components |
| 9 (RLIN) |
1312 |
| 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 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Srinivasan, G. |
| 9 (RLIN) |
6538 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Pandey, S., |
| 9 (RLIN) |
1500 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Cordova, H. |
| 9 (RLIN) |
5333 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Han, G.C. |
| 9 (RLIN) |
27600 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
González Ceniceros, F. |
| 9 (RLIN) |
485 |
| 773 0# - HOST ITEM ENTRY |
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| Title |
Maydica |
| Note |
620726, 620991 |
| Related parts |
v. 37, no. 2, p. 259-270 |
| Place, publisher, and date of publication |
Bergamo (Italy) : Istituto Sperimentale per la Cerealicoltura, 1992. |
| Record control number |
G444598 |
| International Standard Serial Number |
0025-6153 |
| 856 4# - ELECTRONIC LOCATION AND ACCESS |
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| Link text |
Open Access through DSpace |
| Uniform Resource Identifier |
http://hdl.handle.net/10883/1942 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Koha item type |
Article |
| Source of classification or shelving scheme |
Dewey Decimal Classification |
| Suppress in OPAC |
No |