| 000 | 02479nam a22003977a 4500 | ||
|---|---|---|---|
| 001 | G78615 | ||
| 003 | MX-TxCIM | ||
| 005 | 20240919021102.0 | ||
| 008 | 121211s ||||f| 0 p|p||0|| | | ||
| 020 | _a970-648-106-0 | ||
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 072 | 0 | _aF30 | |
| 072 | 0 | _aF63 | |
| 090 | _aCIS-3854 | ||
| 100 |
_aBeck, D. _96306 |
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| 111 | 2 |
_aArnel R. Hallauer International Symposium on Plant Breeding _cMexico, DF (Mexico) _d17-22 Aug 2003 _9990 |
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| 245 | 1 | 0 | _aInbreeding depression in recycled seed of highland hybrids sown under optimal and nitrogen stressed conditions |
| 260 |
_aMexico, DF (Mexico) : _bCIMMYT, _c2003. |
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| 300 | _a2 pages | ||
| 340 | _aPrinted | ||
| 520 | _aMany farmers in developing countries do not replace their seed annually with newly purchased commercial seed. Instead they rely on recycled seed saved from their own harvest or obtained from other farmers. Smale and Phiri (1998) recommended that maize breeders working for areas where farmers commonly recycle seed should consider inbreeding depression as a criteria in their hybrid releases. Highland maize is grown on about 6 million hectares worldwide with aImost 3 million hectares in Mexico (Beck 2001). In Mexican highland areas, only about 10% of the area is planted with improved hybrid cultivars. It is a common practice for farmers in these areas to recycle their seed. Average maize yields in the Mexican highlands are about 2.5 t/ha. Yields are constrained by various factors including drought, low soil fertility, hail, and lack of availability of improved seed at accessible prices. The objective of this trial was to evaluate the inbreeding depression in various highland hybrid types by comparing the F1 to the F2and F3 generations under both low soil nitrogen and non-stressed conditions. | ||
| 546 | _aText in English | ||
| 591 | _a0311|AGRIS 0301|AL-Maize Program | ||
| 595 | _aCSC | ||
| 650 | 1 | 7 |
_aDeveloping countries _2AGROVOC _93229 |
| 650 | 1 | 7 |
_aNitrogen _2AGROVOC _92912 |
| 650 | 1 | 7 |
_aSeed production _91253 _2AGROVOC |
| 650 | 1 | 0 |
_aStress _91277 _2AGROVOC |
| 650 | 1 | 7 |
_91952 _aSoil fertility _2AGROVOC |
| 650 | 1 | 0 |
_91151 _aHybrids _2AGROVOC |
| 650 | 1 | 7 |
_aPlant breeding _gAGROVOC _2 _91203 |
| 700 | 1 |
_aTorres Flores, J.L. _8N1200756 _95573 _gGlobal Maize Program |
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| 773 |
_dMexico, DF (Mexico) : CIMMYT, 200 _gp. 208-209 _tBook of abstracts : Arnel R. Hallauer international symposium on plant breeding _wG76572 _z970-648-106-0 |
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| 942 |
_cSUM _2ddc |
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| 999 |
_c6924 _d6924 |
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