Early stage sparse testing can increase selection accuracy and genetic gain in plant breeding programmes (Record no. 69657)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03706nam a22003737a 4500 |
| 001 - CONTROL NUMBER | |
| control field | 69657 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-TxCIM |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20251203103315.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 251201s2025 -uk||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | MX-TxCIM |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Atlin, G.N. |
| 9 (RLIN) | 2252 |
| 245 10 - TITLE STATEMENT | |
| Title | Early stage sparse testing can increase selection accuracy and genetic gain in plant breeding programmes |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc. | Edinburgh (CIMMYT) : |
| Name of publisher, distributor, etc. | EUCARPIA Biometrics in Plant Breeding Local Organising Committee, |
| Date of publication, distribution, etc. | 2025. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 1 page |
| 500 ## - GENERAL NOTE | |
| General note | Presented at XIX Conference 2025, EUCARPIA: Biometrics Plant Breeding, 17-19 Sep, Edinburgh, UK. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Low-cost genome profiling allows information from relatives to be used to reduce replication of selection candidates while retaining selection accuracy, creating opportunities to redesign plant breeding pipelines. Early-stage sparse testing uses the genomic relationship matrix (GRM) to sample the target population of environments (TPE) more effectively by distributing related early-stage selection candidates across many testing locations to train a genomic selection (GS) model, rather than concentrating them in replicated trials at a few research stations. Using the GRM, data on related genotypes across farms can be connected and combined to enable genomic prediction across the entire TPE, not just a few sites. A similar redesign is possible in hybrid breeding programmes, where the GRM allows related selection candidates to be evaluated on several testers, permitting general combining ability (GCA) to be estimated early in the selection process. Simulations indicate that, if testing resources are held constant, sparse testing designs can increase selection accuracy both across environments and across testers. Apromising application of sparse testing is to move early-stage testing directly into farmers’ f ields. Most crop production in Sub-Saharan Africa (SSA) occurs on small farms characterized by low input use, multiple biotic and abiotic stresses, and diverse management factors. However, most CGIAR and national breeding programmes conduct early-stage phenotyping at only a few well-managed research stations. Early-stage on-farm sparse testing (OFST) addresses this issue by shifting the evaluation process from research stations to dozens or even hundreds of farms, treating each farm as an incomplete block. This can enhance genetic gain in farmers’ fields by increasing selection accuracy and intensity while shortening the generation interval. Early-stage OFST is currently being piloted in the CIMMYT maize and CIAT bean programmes in SSA. |
| 546 ## - LANGUAGE NOTE | |
| Language note | Text in English |
| 600 ## - SUBJECT ADDED ENTRY--PERSONAL NAME | |
| Source of heading or term | |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Testing |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 12144 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Genetic gain |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 2091 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Plant breeding |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 1203 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Breeding programmes |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 21704 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Early selection |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 30704 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Burgueño, J. |
| Miscellaneous information | Genetic Resources Program |
| Field link and sequence number | INT3239 |
| 9 (RLIN) | 907 |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Teshale Mamo |
| 9 (RLIN) | 40793 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Beyene, Y. |
| Miscellaneous information | Global Maize Program |
| Field link and sequence number | INT2891 |
| 9 (RLIN) | 870 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Dagne Wegary Gissa |
| Miscellaneous information | Global Maize Program |
| Field link and sequence number | INT3401 |
| 9 (RLIN) | 952 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Cairns, J.E. |
| Miscellaneous information | Global Maize Program |
| Field link and sequence number | INT2948 |
| 9 (RLIN) | 879 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Field link and sequence number | 001712096 |
| Personal name | Chivasa, W. |
| Miscellaneous information | Global Maize Program |
| 9 (RLIN) | 19858 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Zaman-Allah, M. |
| Miscellaneous information | Global Maize Program |
| Field link and sequence number | I1705364 |
| 9 (RLIN) | 779 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Field link and sequence number | 001712518 |
| Personal name | Werner, C.R. |
| Miscellaneous information | Excellence in Breeding |
| -- | Breeding Modernization and Innovation Platform |
| 9 (RLIN) | 26661 |
| 773 ## - HOST ITEM ENTRY | |
| Place, publisher, and date of publication | Edinburgh (United Kingdom) : EUCARPIA Biometrics in Plant Breeding Local Organising Committee, 2025. |
| Related parts | p. 20 |
| Title | XIX Conference 2025 EUCARPIA, Biometrics In plant breeding, 17-19 Sep 2025 Edinburgh, UK. : Book of abstracts |
| Record control number | 69661 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Conference paper |
| Suppress in OPAC | No |
| Date last seen | Total Checkouts | Price effective from | Koha item type | Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection code | Withdrawn status | Home library | Current library | Date acquired |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12/01/2025 | 12/01/2025 | Conference paper | Not Lost | Dewey Decimal Classification | CIMMYT Staff Publications Collection | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Knowledge Center: John Woolston Library | 12/01/2025 |