| 000 | 03446nab a2200469 a 4500 | ||
|---|---|---|---|
| 999 |
_c56933 _d56925 |
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| 001 | 56933 | ||
| 003 | MX-TxCIM | ||
| 005 | 20240919021225.0 | ||
| 008 | 150803s2015 xxu|||p|op||| 00| 0 eng d | ||
| 022 | _a1435-0653 | ||
| 024 | 8 | _ahttps://doi.org/10.2135/cropsci2014.06.0415 | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 100 | 1 |
_91426 _aArief, V.N. |
|
| 245 | 1 | 0 |
_aEvaluating testing strategies for plant breeding field trials : _bredesigning a CIMMYT International Wheat Nursery |
| 260 |
_aMadison (USA) : _bCSSA, _c2015. |
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| 500 | _aPeer review | ||
| 520 | _aGenotypes produced from plant breeding programs for annual crops are evaluated in multiyear, multilocation field trials where a large number of genotypes grown in a few locations in the first year are progressively reduced by selection and tested in a greater number of locations in successive years. Provided fixed resources are specified, the efficiencies of testing strategies differing in the number of locations and replications used and in the number of genotypes tested in successive years can be evaluated by three statistics (genetic repeatability, acceptance probability, and potential gain) calculated from five variance components applicable to the field trials. The five variance components required are deployed genetic variance, genotype-by-year, genotype-by-location, and genotype-by-year-by-location interaction variances and the residual (error) variance. Strictly, known variance components are required, but the statistics and their standard errors can be calculated using robust estimates of the variance components obtained from a combined analysis over years of a large set of historical data from field trials that are connected by shared genotypes across years, as genotypeby- year and genotype-by-year-by-location variance components are estimable. Single-year analyses are unsuitable, as no estimate of the interactions with year are available, and such analyses produce biased estimates of genetic variance and genotype-by-location interaction variance. These procedures are illustrated using an example from the CIMMYT international wheat breeding program to evaluate 2-yr testing strategies for CIMMYT's Elite Spring Wheat Yield Trials that has been distributed and evaluated internationally since 1979. | ||
| 536 | _aGenetic Resources Program | ||
| 536 | _aGlobal Wheat Program | ||
| 546 | _aText in English | ||
| 591 | _bCIMMYT Informa No. 1946 | ||
| 594 | _aINT1422 | ||
| 594 | _aINT0610 | ||
| 594 | _aCCJL01 | ||
| 594 | _aINT0599 | ||
| 610 | 2 | 7 |
_9978 _aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) |
| 650 | 7 |
_aWheat _gAGROVOC _2 _91310 |
|
| 650 | 7 |
_aPlant breeding _gAGROVOC _2 _91203 |
|
| 700 | 1 |
_91427 _aDeLacy, I.H. |
|
| 700 | 1 |
_aCrossa, J. _gGenetic Resources Program _8CCJL01 _959 |
|
| 700 | 1 |
_aPayne, T.S. _gFormerly Genetic Resources Program _8INT1422 _9828 |
|
| 700 | 1 |
_aSingh, R.P. _gGlobal Wheat Program _8INT0610 _9825 |
|
| 700 | 1 |
_aBraun, H.J. _gFormerly Global Wheat Program _8INT0599 _9824 |
|
| 700 | 2 |
_91428 _aTing Tian |
|
| 700 | 1 |
_91429 _aBasford, K.E. |
|
| 700 | 1 |
_aDieters, M.J.J. _8001712805 _gExcellence in Breeding _91430 |
|
| 773 | 0 |
_wu444244 _aCrop Science Society of America _x0011-183X _dMadison, WI (USA) : CSSA, 2015. _tCrop Science _gv. 55, p. 164-177 |
|
| 856 | 4 |
_yAccess only for CIMMYT Staff _uhttps://hdl.handle.net/20.500.12665/1533 |
|
| 942 |
_2ddc _cJA _n0 |
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