Claim · model-written summary
Within-family fluctuation exceeded real family differences, but replication distinguished them.
- Taxon
- Sugar-Beet
Beta vulgaris subsp. vulgarist0 - Outcome
- real differences were distinguishablee0
- Comparator
- fluctuations of beet familiese0
Verbatim
e0“The fluctuations of beet families planted in progeny rows in alternation with check rows exceeded their real differences, but real differences were distinguishable by the use of a large number of replications”
t0“Sugar-Beet”
Title
Some Recent Investigations in Sugar-Beet Breeding
Frederick J. Pritchard Botanical Gazette 1916. doi:10.1086/331958
Other claims from this paper (11)
- Observation Individual beet root size and sugar content differences showed no evidence of inheritance.
- Association Sugar percentage or quantity in ordinary-sized roots did not correlate with seed yield.
- Association Seed yield did not correlate with mean progeny sugar percentage.
- Observation Areas within an apparently uniform field differed by 2 per cent sugar.
- Association Sugar percentage and sugar yield varied independently among sugar-beet rows.
- Recommendation The authors recommend grading progeny rows by both sugar percentage and sugar yield or extractable sugar yield.
- Association Mean root weight per row increased with sugar yield.
- Association Mean root weight per row decreased with sugar percentage.
- Intervention effect Stopping selection for one generation caused no deterioration in sugar percentage and an apparent gain.
- Intervention effect Continuous selection did not improve sugar yield or sugar percentage.
- Observation Good and poor beet families both transmitted average qualities.