Claim · model-written summary
Yield heterosis declined in F1-derived generations.
- Taxon
- soybean
Glycine maxe0 - Outcome
- heterosis of yielde1
- Direction
- declinede1
- Qualifier
- in F1-derived generationse1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“evaluating the hybrid heterosis, inbreeding depression and combining ability performed in F1-F3 generations of 14 yield and quality traits among parental materials of soybean”
e1“The heterosis of yield was the largest among the traits studied, but that in F1-derived generations declined and, therefore, not useful in production”
Title
Jiayin Yang; Junyi Gai Zhongguo nongye Kexue 2009
Other claims from this paper (13)
- Observation Yield heterosis was the largest among the yield-related traits in the soybean F1 hybrids.
- Observation Heterosis for number of pods per plant and seeds per plant was the next largest after yield heterosis.
- Observation No obvious heterosis was observed for 100-seed-weight.
- Association Traits with high F1 heterosis showed high inbreeding depression in F2 and F3 generations.
- Observation No obvious hybrid heterosis was observed for maturity and quality (protein and oil contents) traits.
- Observation Significant GCA×Generation and SCA×Generation interaction was found for yield.
- Association Parental cultivars with high F1 combining ability were not necessarily high in combining ability in derived inbred generations for yield.
- Observation No significant GCA×Generation or SCA×Generation interaction was observed for quality traits.
- Association F1 combining ability could predict combining ability in derived inbred generations for quality traits.
- Association Yield of the parental materials per se could not be used as an indicator of their GCA.
- Association Protein and oil contents of the parental materials per se could be used as an indicator of their GCA.
- Recommendation Yield heterosis carried into F1-derived generations is not useful in production.
- Recommendation Selection pressure should be placed on early hybrid generations to improve quality traits in line cultivars.