MARC details
| 000 -LEADER |
|---|
| fixed length control field |
03529nab a22004577a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
59112 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
MX-TxCIM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20231018192729.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
180129s2017 w |||p| p||| 00| 0 eng d |
| 024 8# - OTHER STANDARD IDENTIFIER |
|---|
| Standard number or code |
https://doi.org/10.2135/cropsci2016.09.0754 |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
MX-TxCIM |
| 041 ## - LANGUAGE CODE |
|---|
| Language code of text/sound track or separate title |
eng |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
3375 |
| Personal name |
Masuka, B. |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Genetic diversity among selected elite CIMMYT maize hybrids in East and Southern Africa |
| Medium |
[Electronic Resource] |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Place of publication, distribution, etc. |
Madison, WI : |
| Name of publisher, distributor, etc. |
Crop Science Society of America, |
| Date of publication, distribution, etc. |
2017. |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Peer review |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Open Access |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc. |
Genetic gain within the CIMMYT Eastern and Southern Africa (ESA) hybrid maize (Zea mays L.) breeding program from 2000 to 2010 was recently estimated at 0.85 to 2.2% yr−1 under various environmental conditions. Over 100 varieties were disseminated from CIMMYT to farmers in ESA, hence the need to check genetic diversity and frequency of use of parents to avoid potential narrowing down of the genetic base. Fifty-five parents from CIMMYT ESA used in the hybrids were fingerprinted using genotyping-by-sequencing. Data analysis in TASSEL and MEGA6 generated pairwise genetic distances between parents of 0.004 to 0.4005. Unweighted pair group method with arithmetic mean (UPGMA) analysis produced two clusters (I and II) with two subclusters each (A and B) and two sub-subclusters (IAi and IAii). Principal coordinate analysis produced three clusters where IAi and IIA from the UPGMA analysis formed independent clusters while IAii, IB, and IIB clustered together. Lines were separated by pedigree and origin. Ninety-five percent frequency of pairwise genetic distances ranged between 0.2001 and 0.4000. However, only four of the 55 parents (CML444, CML395, CML312, and CML442) were each used in 15 to 30 of the 52 hybrids evaluated in the genetic gain study. The remaining 51 were used in one to four hybrids. Frequent use of the four parents gave 29 to 58% of the hybrids a narrow genetic base, posing risk in case of pest or disease outbreaks. Parents evaluated do not represent the genetic base of CIMMYT ESA but parents of the best-performing hybrids selected from 2000 to 2010. Breeders should ensure a wide genetic base for released varieties to avoid breakdown in case of pest or disease outbreaks. |
| 546 ## - LANGUAGE NOTE |
|---|
| Language note |
Text in English |
| 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 |
|---|
| Topical term or geographic name as entry element |
Germplasm |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1136 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Genetic variation |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1129 |
| 651 #7 - SUBJECT ADDED ENTRY--GEOGRAPHIC NAME |
|---|
| 9 (RLIN) |
4387 |
| Geographic name |
East Africa |
| Source of heading or term |
AGROVOC |
| 651 #7 - SUBJECT ADDED ENTRY--GEOGRAPHIC NAME |
|---|
| 9 (RLIN) |
5594 |
| Geographic name |
South Africa |
| Source of heading or term |
AGROVOC |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
6191 |
| Personal name |
Biljon, A. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
879 |
| Personal name |
Cairns, J.E. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT2948 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Das, B. |
| Miscellaneous information |
Global Maize Program |
| -- |
Excellence in Breeding |
| Field link and sequence number |
INT2825 |
| 9 (RLIN) |
863 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
2259 |
| Personal name |
Labuschagne, M. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
MacRobert, J.F. |
| Field link and sequence number |
INT2704 |
| Miscellaneous information |
Excellence in Breeding |
| 9 (RLIN) |
583 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
858 |
| Personal name |
Makumbi, D. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT2765 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Magorokosho, C. |
| Miscellaneous information |
Formerly Global Maize Program |
| Field link and sequence number |
INT2714 |
| 9 (RLIN) |
854 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
779 |
| Personal name |
Zaman-Allah, M. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
I1705364 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
2258 |
| Personal name |
Ogugo, V. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
923 |
| Personal name |
Olsen, M. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT3333 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Prasanna, B.M. |
| Miscellaneous information |
Global Maize Program |
| Field link and sequence number |
INT3057 |
| 9 (RLIN) |
887 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
876 |
| Personal name |
Amsal Tesfaye Tarekegne |
| Field link and sequence number |
INT2937 |
| Miscellaneous information |
Global Maize Program |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
869 |
| Personal name |
Fentaye Kassa Semagn |
| Field link and sequence number |
INT2869 |
| Miscellaneous information |
Global Maize Program |
| 773 0# - HOST ITEM ENTRY |
|---|
| Related parts |
v. 57 no. 5, p. 2395-2404 |
| Title |
Crop Science |
| Record control number |
u444244 |
| 856 4# - ELECTRONIC LOCATION AND ACCESS |
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| Link text |
Open Access through DSpace |
| Uniform Resource Identifier |
https://hdl.handle.net/10883/19200 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Dewey Decimal Classification |
| Koha item type |
Article |
| Suppress in OPAC |
No |