MARC details
| 000 -LEADER |
|---|
| fixed length control field |
03252nab a22003377a 4500 |
| 001 - CONTROL NUMBER |
|---|
| control field |
58442 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
MX-TxCIM |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20211006082039.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
150522s2016 -uk|||p|sp||| 00| 0 eng d |
| 024 8# - OTHER STANDARD IDENTIFIER |
|---|
| Standard number or code |
https://doi.org/10.1093/jxb/erw081 |
| 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) |
667 |
| Personal name |
Rebetzke, G.J. |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Awns reduce grain number to increase grain size and harvestable yield in irrigated and rainfed spring wheat |
| Medium |
[Electronic Resource] |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Place of publication, distribution, etc. |
New York, USA : |
| Name of publisher, distributor, etc. |
Oxford University Press, |
| Date of publication, distribution, etc. |
2016. |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Open Access |
| 500 ## - GENERAL NOTE |
|---|
| General note |
Peer review |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc. |
Genotypic variation in ear morphology is linked to differences in photosynthetic potential to influence grain yield in winter cereals. Awns contribute to photosynthesis, particularly under water-limited conditions when canopy assimilation is restricted. We assessed performance of up to 45 backcross-derived, awned–awnletted NILs representing four diverse genetic backgrounds in 25 irrigated or rainfed, and droughted environments in Australia and Mexico. Mean environment grain yields were wide-ranging (1.38–7.93 t ha−1) with vegetative and maturity biomass, plant height, anthesis date, spike number, and harvest index all similar (P >0.05) for awned and awnletted NILs. Overall, grain yields of awned–awnletted sister-NILs were equivalent, irrespective of yield potential and genetic background. Awnletted wheats produced significantly more grains per unit area (+4%) and per spike (+5%) reflecting more fertile spikelets and grains in tertiary florets. Increases in grain number were compensated for by significant reductions in grain size (–5%) and increased frequency (+0.8%) of small, shrivelled grains (‘screenings’) to reduce seed-lot quality of awnletted NILs. Post-anthesis canopies of awnletted NILs were marginally warmer over all environments (+0.27 °C) but were not different and were sometimes cooler than awned NILs at cooler air temperatures. Awns develop early and represented up to 40% of total spikelet biomass prior to ear emergence. We hypothesize that the allocation of assimilate to large and rapidly developing awns decreases spikelet number and floret fertility to reduce grain number, particularly in distal florets. Individual grain size is increased to reduce screenings and to increase test weight and milling quality, particularly in droughted environments. Despite the average reduction in grain size, awnless lines could be identified that combined higher grain yield with larger grain size, increased grain protein concentration, and reduced screenings. |
| 526 ## - STUDY PROGRAM INFORMATION NOTE |
|---|
| Program name |
Wheat CRP |
| Wheat Flagship Projects |
FP3 - Global partnership to accelerate genetic gain in farmers field |
| 546 ## - LANGUAGE NOTE |
|---|
| Language note |
Text in English |
| 591 ## - CATALOGING NOTES |
|---|
| Number of CIMMYT Informa |
CIMMYT Informa: 1990 (May 4, 2017) |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Awns |
| 9 (RLIN) |
4478 |
| Source of heading or term |
AGROVOC |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Wheat |
| Miscellaneous information |
AGROVOC |
| Source of heading or term |
|
| 9 (RLIN) |
1310 |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Yield factors |
| 9 (RLIN) |
6137 |
| Source of heading or term |
AGROVOC |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Grain crops |
| Miscellaneous information |
AGROVOC |
| 9 (RLIN) |
1926 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Bonnett, D.G. |
| 9 (RLIN) |
871 |
| Field link and sequence number |
INT2902 |
| Miscellaneous information |
Global Wheat Program |
| 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 |
| 773 0# - HOST ITEM ENTRY |
|---|
| Record control number |
u444540 |
| International Standard Serial Number |
0022-0957 |
| Place, publisher, and date of publication |
Oxford, United Kingdom : Oxford University Press |
| Title |
Journal of Experimental Botany |
| Related parts |
v. 67, no. 9, p. 2537-2586 |
| 856 4# - ELECTRONIC LOCATION AND ACCESS |
|---|
| Uniform Resource Identifier |
http://hdl.handle.net/10883/18838 |
| Link text |
Open Access through DSpace |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Dewey Decimal Classification |
| Koha item type |
Article |
| Suppress in OPAC |
No |