| 000 | 02447nam a22004457a 4500 | ||
|---|---|---|---|
| 001 | G78627 | ||
| 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 | _aE16 | |
| 072 | 0 | _aF30 | |
| 090 | _aCIS-3866 | ||
| 100 | 1 |
_aAbdurehman, J. _929037 |
|
| 111 | 2 |
_aArnel R. Hallauer International Symposium on Plant Breeding _cMexico, DF (Mexico) _d17-22 Aug 2003 _9990 |
|
| 245 | 1 | 0 | _aHeterosis and combining ability for yield and related traits in maize |
| 260 |
_aMexico, DF (Mexico) : _bCIMMYT, _c2003. |
||
| 300 | _a2 pages | ||
| 340 | _aPrinted | ||
| 520 | _aAmongst cereals in Ethiopia, maize (Zea mays L.) ranks first in terms of total production and grain yield (CSA l997). Despite its importance, the national average for maize yield was low (only l.7 t/ha). This was attributed to several production constraints, including the lack of improved maize varieties (Abera 1982). After the release of improved open pollinating and hybrid varieties, the national average yield increased to 1.93 t/ha. Due to an increasing interest in hybrid maize production, the national maize research program began various activities related to hybrid development, including the determination of heterotic patterns and combining ability amongst different maize germplasms, and the identification of the most desirable crosses for exploiting heterosis. Heterosis receives considerable attention because of its marked effects on grain yield improvement. The amount of heterosis depends largely upon the genetic divergence of the parental materials (Hallauer and Miranda 1988). | ||
| 546 | _aText in English | ||
| 591 | _a0311|AGRIS 0301|AL-Maize Program | ||
| 595 | _aCSC | ||
| 650 | 1 | 7 |
_aCross-breeding _2AGROVOC _926603 |
| 650 | 1 | 7 |
_aGermplasm _2AGROVOC _91136 |
| 650 | 1 | 7 |
_aGrain yield _91339 _2AGROVOC |
| 650 | 1 | 7 |
_aInbred lines _2AGROVOC _91155 |
| 650 | 1 | 7 |
_aMaize _2AGROVOC _91173 |
| 650 | 1 | 7 |
_aPollination _2AGROVOC _95187 |
| 650 | 1 | 7 |
_91314 _aZea mays _2AGROVOC |
| 650 | 1 | 7 |
_91134 _aGenotypes _2AGROVOC |
| 650 | 1 | 7 |
_91151 _aHybrids _2AGROVOC |
| 650 | 1 | 7 |
_aPlant breeding _gAGROVOC _2 _91203 |
| 700 | 1 |
_aZelleke, H. _929038 |
|
| 700 | 1 |
_aGupta, V. _921023 |
|
| 773 |
_dMexico, DF (Mexico) : CIMMYT, 2003. _gp. 256-257 _tBook of abstracts : Arnel R. Hallauer international symposium on plant breeding _wG76572 _z970-648-106-0 |
||
| 942 |
_cSUM _2ddc |
||
| 999 |
_c6935 _d6935 |
||