000 03086nab a22004937a 4500
001 G73661
003 MX-TxCIM
005 20211006080514.0
008 121211b |||p||p||||||| |z||| |
022 0 _a0003-1062
040 _aMX-TxCIM
082 0 4 _a1998-059316
100 1 _aRevilla, P.
245 0 0 _aHeterotic patterns among open-pollinated sweet corn cultivars
260 _c1997
340 _aPrinted
500 _areferences US (DNAL 81 SO12)
520 _aHeterotic patterns in sweet corn are weakly defined. Most sweet corn inbreds are descended from three open pollinated cultivars: 'Golden Bantam', 'Stowell's Evergreen', and 'Country Gentleman'. Heterotic and phylogenetic relationships among these three cultivars and others are not clearly known. This investigation was designed to investigate the heterotic patterns among some historically important open-pollinated sweet corn cultivars: 'Country Gentleman', 'Golden Bantam', 'Lindsey Meyer Blue', 'Stowell's Evergreen', 'Howling Mob', and 'Pease Crosby'. The 15 possible hybrids from the diallel cross plus the 6 parents were grown in midspring and late summer plantings. Heterosis and combining ability effects were estimated for 13 traits. Hybrid x planting date interactions were significant for most of the main traits, hence, planting dates were analyzed separately. Average midparent heterosis for grain yield was 29.17% in the first planting date and 57.04% in the second planting. Midparent heterosis for yield plant height were highest for hybrids with 'Country Gentleman' as a parent. 'Stowell's Evergreen' when crossed to 'Pease Crosby', 'Lindsey Meyer, and 'Golden Bantam' exhibited high heterosis. The two late-maturity cultivars 'Country Gentleman' and 'Stowell's Evergreen' had higher general combining ability than the four early-maturity cultivars for most traits. Specific combining ability was seldom significant. Yield of 'Country Gentleman' hybrids averaged over all crosses and planting dates was the highest. These data indicate a strong heterotic pattern--'Country Gentleman' x 'Pease Crosby', 'Golden Bantam', and 'Lindsey Meyer Blue'--and a weaker one--'Stowell's Evergreen' x 'Pease Crosby', 'Golden Bantam', and 'Lindsey Meyer Blue'
546 _aEnglish
595 _aAC
650 1 0 _aBiological properties
650 1 0 _aCells
650 1 7 _aCereals
_gAGROVOC
_2
_91036
650 1 0 _aCrop husbandry
_91058
650 1 0 _aDevelopmental stages
650 1 0 _aDimensions
650 1 0 _aGametes
650 1 0 _aGenetic parameters
650 1 0 _aGramineae
650 1 7 _aPlant anatomy
_gAGROVOC
_2
_91202
650 1 0 _aPlant developmental stages
650 1 7 _aPlant genetics and breeding
_gNOT IN AGROVOC
_2
_91208
650 1 0 _aPlant products
650 1 0 _aPlant reproductive organs
650 1 0 _aProgeny
650 1 0 _aSeeds
650 1 0 _aTaxa
650 1 0 _aTiming
650 1 0 _aZea
650 1 0 _91313
_aYields
_gAGROVOC
700 1 _aTracy, W.F.,
_ecoaut.
773 0 _tAmerican Society for Horticultural Science (USA). (May 1997). v. 122(3) p. 319-324
942 _cJA
999 _c21566
_d21566