Harnessing radiation use efficiency using spectral reflectance indices for climate-resilient wheat improvement in CIMMYT international nurseries (Record no. 69611)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03691nam a22003737a 4500 |
| 001 - CONTROL NUMBER | |
| control field | 69611 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-TxCIM |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20251126165149.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 251125s2025 gw ||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | MX-TxCIM |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Karnati, B. |
| 9 (RLIN) | 40713 |
| 245 10 - TITLE STATEMENT | |
| Title | Harnessing radiation use efficiency using spectral reflectance indices for climate-resilient wheat improvement in CIMMYT international nurseries |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc. | Bonn (Germany) : |
| Name of publisher, distributor, etc. | University of Bonn, |
| Date of publication, distribution, etc. | 2025. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 1 page |
| 500 ## - GENERAL NOTE | |
| General note | Presented at Tropentag 2025: International Conference on Research for Sustainable Development, September 10–12, Hybrid Conference. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Wheat productivity is significantly constrained by climate change–induced drought stress, often compounded by high irradiance, which inhibits photosynthesis and reduces yield. Spectral reflectance indices (SRIs) can assess physiological traits, including leaf pigments, as rapid, nondestructive proxies for drought response. This study identified genotypic variation among 24 spring wheat Lines under water-deficit (WD) conditions using SRIs and evaluated their association with crop performance. The experiment was conducted during the 2023/2024 season at CIMMYT’s field station in Ciudad Obregón, Sonora, Mexico. SRIs for Anthocyanin Reflectance Index (ARI), Carotenoid Reflectance Index (CRI), Ratio Analysis of Carotenoids (RARSc), Structure Insensitive Pigment Index (SIPI), Photochemical Reflectance Index (PRI), Normalised Difference Vegetation Index (NDVI), Ratio Analysis of Chlorophyll a (RARSa), Ratio Analysis of Chlorophyll b (RARSb), Water Index (WI), and Normalised Difference Water Index (NDWI) were used to assess physiological status at early reproductive and maturation stages. ARI increased under WD across both stages, indicating higher anthocyanin accumulation for photoprotection and antioxidant defence. PRI reduction under WD reflected increased xanthophyll cycle de-epoxidation and excess energy dissipation, while CRI and RARSc were higher under well-watered (WW) conditions, suggesting inhibition of carotenoid biosynthesis under WD. NDVI consistently declined under WD due to reduced green biomass, whereas SPAD values showed limited variation and contribution to principal component analysis. Chlorophyll index RARSa increased under WD in most Lines. WI and NDWI significantly decreased under WD. On average, grain yield and biomass were reduced by 46 % and 48 %, respectively. SRIs (PRI, NDVI, CRI, RARSc, RARSb, WI, NDWI) showed strong positive correlations with yield and biomass, while ARI, SIPI, and RARSa were negatively associated across stages and environments. Two Lines were drought-adapted, and two were drought-sensitive. Overall, SRIs proved reliable for identifying high-yielding, drought-resilient Lines, supporting their use in breeding for water-limited conditions. |
| 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 | Climate change |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 1045 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Drought |
| 9 (RLIN) | 1080 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Heat |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 1143 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Food security |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 1118 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | High-throughput phenotyping |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 30900 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Remote sensing |
| Source of heading or term | AGROVOC |
| 9 (RLIN) | 1986 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rivera Amado, A.C. |
| Field link and sequence number | N1313814 |
| Miscellaneous information | Global Wheat Program |
| 9 (RLIN) | 1903 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Pieters, A. |
| 9 (RLIN) | 40709 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Gerard, G.S. |
| Field link and sequence number | 1713398 |
| Miscellaneous information | Global Wheat Program |
| 9 (RLIN) | 11490 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Velu, G. |
| Miscellaneous information | Global Wheat Program |
| Field link and sequence number | INT2983 |
| 9 (RLIN) | 880 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Crespo-Herrera, L.A. |
| Miscellaneous information | Global Wheat Program |
| Field link and sequence number | I1706538 |
| 9 (RLIN) | 2608 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Reynolds, M.P. |
| Miscellaneous information | Global Wheat Program |
| Field link and sequence number | INT1511 |
| 9 (RLIN) | 831 |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Asch, F. |
| 9 (RLIN) | 21429 |
| 711 2# - ADDED ENTRY--MEETING NAME | |
| Meeting name or jurisdiction name as entry element | Tropentag |
| 9 (RLIN) | 40712 |
| Date of meeting | (September 10-12, 2025 : |
| Location of meeting | Bonn, Germany) |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 11/25/2025 | 11/25/2025 | Conference paper | Not Lost | Dewey Decimal Classification | CIMMYT Staff Publications Collection | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Knowledge Center: John Woolston Library | 11/25/2025 |