| 000 | 02418nam a22004457a 4500 | ||
|---|---|---|---|
| 001 | G75916 | ||
| 003 | MX-TxCIM | ||
| 005 | 20240919021056.0 | ||
| 008 | 121211s ||||f| 0 p|p||0|| | | ||
| 020 | _a970-648-096-X | ||
| 040 | _aMX-TxCIM | ||
| 072 | 0 | _aF01 | |
| 072 | 0 | _aU10 | |
| 082 | 0 | 4 |
_a633.1553 _bBEL |
| 100 | 1 |
_92252 _aAtlin, G.N. |
|
| 245 | 0 | 0 |
_aSources of variation in participatory varietal selection trials with rainfed rice: _b Implications for the design of mother-baby trial networks |
| 260 |
_aMexico, DF (Mexico) _bCIMMYT : _c2002 |
||
| 300 | _ap. 36-43 | ||
| 340 | _aPrinted | ||
| 500 | _aTables | ||
| 520 | _aLittle information has been published on the repeatability of participatory varietal selection (PVS) trials. Repeatability estimates, which can be derived from the combined analysis of trials over locations and years, are useful for determining the number of replications and the optimal blocking structure of PVs trials. Variance components were estimated from a series of uplandand lowland PVS trials conducted in the states of Jharkand and Bihar in eastern India, and used to estimate the repeatability of means. In both sets of trials the cultivar x site x year variance component was larger than the cultivar x site component, indicating that there was little specific adaptation to sites within the trials series. Participatory varietal trials conducted on-farm under farmer management were quite repeatable; replication over 5 sites was predicted to result in a repeatability of more than 0.5 in both data sets. Simulation indicated that a modest benefit is likely from the use of alpha-lattice designs when among-farm variances are large in experiments conducted using the mother-baby design, which treats farms as incomplete blocks. | ||
| 546 | _aEnglish | ||
| 591 | _a0109|AGRIS 0201|AL-Economics Program|R02CIMPU | ||
| 593 | _aJuan Carlos Mendieta | ||
| 595 | _aCPC | ||
| 650 | 1 | 0 |
_aAgroforestry _92210 |
| 650 | 1 | 0 | _aAnalytical methods |
| 650 | 1 | 7 |
_aCrop yield _gAGROVOC _2 _91066 |
| 650 | 1 | 0 | _aData analysis |
| 650 | 1 | 0 | _aFarmers associations |
| 650 | 1 | 7 |
_aRice _gAGROVOC _2 _91243 |
| 650 | 1 | 0 |
_aVariety trials _92474 |
| 653 | 0 | _aCIMMYT | |
| 650 | 1 | 0 |
_91952 _aSoil fertility _gAGROVOC |
| 650 | 1 | 7 |
_aPlant breeding _gAGROVOC _2 _91203 |
| 700 | 1 |
_aBellon, M.R.|Reeves, J. _eeds. |
|
| 700 | 1 |
_aCourtois, B., _ecoaut. |
|
| 700 | 1 |
_aParis, T., _ecoaut. |
|
| 942 | _cBK | ||
| 999 |
_c5625 _d5625 |
||