MARC details
| 000 -LEADER |
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| fixed length control field |
03096nab a22004097a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
G15891 |
| 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 |
20240919020943.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
220909s1990 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-1349 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Beck, D. |
| 9 (RLIN) |
6306 |
| 245 10 - TITLE STATEMENT |
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| Title |
Heterosis and combining ability of CIMMYT's tropical early and intermediate maturity maize (Zea mays L.) germplasm |
| 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. |
1990. |
| 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 |
|---|
| General note |
Peer review |
| 500 ## - GENERAL NOTE |
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| General note |
Tables, references p. 14-16 |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
A 10 paretn diallel was formed to determine combining ability and heterotic patterns among CIMMYT's tropically adapted, early and intermediate maturity maize (Zea mays L.) gene pools and populations. The parents and their crosses were evaluated for yield (t/ha), plant and ear height (cm), and days to silk at five locations in Mexico, and one each in Colombia, Ecuador, India and Thailand. The test for average heterosis, parents vs. crosses, was significant for grain yield, and plant and ear height in the combined analysis of variance. General combining ability (GCA) was significant for all traits. Specific combining ability (SCA) was significant onlly for ear height. Although yield heterosis over the better parent was low in most crosses, moderate levels were observed in the Population 49 x Population 26 cross (9.6%). Population 26 also combined well with Pool 21 yielding 6.05 t/ha with 7.3% heterosis over the better parent. Pool 22 had the highest GCA effect for yield (0.37 t/ha), and was a parent in three of the five top yielding crosses. High yielding combinations included Pool 22 with Pool 20 (6.33 th/ha), Population 23 (6.24 t/ha), and Population 26 (6.23 t/ha). However, maximum heterosis over the better parent was only 3.2% in these crosses. The only cross with a significant positive SCA effect for yield was Population 23 x Pool 20 yielding 6.13 t/ha with 6.7% heterosis. Heterosis for plant and ear height, and days to silk were generally low. Based on our study, the best choices for initiating hybrid work among white grain materials are Population 23 and Pool 20, and among yellow grain materials Populations 26, Pool 21, and Pool 22. |
| 536 ## - FUNDING INFORMATION NOTE |
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| Text of note |
Genetic Resources Program |
| 546 ## - LANGUAGE NOTE |
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| Language note |
Text in English |
| 591 ## - CATALOGING NOTES |
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| Affiliation |
MP|SCS|7936-R|3 |
| 594 ## - STAFFID |
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| StaffID |
CCJL01 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| 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 |
Combining ability |
| 9 (RLIN) |
2367 |
| Source of heading or term |
AGROVOC |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Heterosis |
| 9 (RLIN) |
1145 |
| Source of heading or term |
AGROVOC |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Germplasm |
| 9 (RLIN) |
1136 |
| Source of heading or term |
AGROVOC |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Vasal, S.K. |
| 9 (RLIN) |
5280 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Crossa, J. |
| Miscellaneous information |
Genetic Resources Program |
| Field link and sequence number |
CCJL01 |
| 9 (RLIN) |
59 |
| 773 0# - HOST ITEM ENTRY |
|---|
| Title |
Maydica |
| Note |
606368, 619435 |
| Related parts |
v. 35, no. 3, p. 279-285 |
| Place, publisher, and date of publication |
Bergamo (Italy) : Istituto Sperimentale per la Cerealicoltura, 1990. |
| Record control number |
G444598 |
| International Standard Serial Number |
0025-6153 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Article |
| Source of classification or shelving scheme |
Dewey Decimal Classification |
| Suppress in OPAC |
No |