Claim · model-written summary
S1 families from the cross (50% adapted germplasm) yielded significantly less than those from the adapted population.
- Material
- cross (50% adapted germplasm)e1
- Treatment
- levels of introgressione7
- Outcome
- yielde1
- Direction
- yielded significantly lesse1
- Comparator
- adapted (100% adapted germplasm)e1
Zea maysNot reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maize ( Zea mays L.) geneticists and breeders in the USA are concerned with the narrow base of Corn Belt germplasm”
e1“The S 1 families from the cross (50% adapted germplasm) yielded significantly less than those from adapted (100% adapted germplasm) and backcross (75% adapted germplasm)”
e7“three levels of introgression of exotic maize germplasm into an adapted population”
Title
Introgression of an Exotic Germplasm for Improving an Adapted Maize Population1
J. Crossa; C. O. Gardner Crop Science 1987. doi:10.2135/cropsci1987.0011183x002700020008x
Other claims from this paper (6)
- Intervention effect S1 families from the cross (50% adapted germplasm) yielded significantly less than those from the backcross (75% adapted germplasm).
- Intervention effect Adapted and backcross populations yielded similarly.
- Observation Adapted and backcross maize populations were early maturing.
- Intervention effect Use of an exotic source increased genetic variation in the cross population.
- Mechanism Major genes for lack of adaptation are acting in the cross population.
- Recommendation The cross can be used as a base population in a selection program if useful exotic genes are at low frequencies, given an appropriate effective population size.