Abstract
Several different selection strategies were used to estimate expected gain of days to flowering and other related characters in two F2 soybean (Glycine max (L.) Merrill) populations. The sample originated from crosses of lines whose seeds do not contain the three lipoxygenase isozymes with the commercially cultivated IAC-12. IAC-12 is a gene carrier for an extended juvenile period. This study was conducted during the winter of 1994 in Viçosa, Minas Gerais. The plants were grown under natural photoperiod. One population was grown in a heated greenhouse, and the other in the field under natural temperature conditions. Lower temperatures early in the field planting caused a delay in flowering. Delayed flowering caused a broader amplitude in all characters evaluated, and resulted in higher selection gains for the field-grown plants than for the greenhouse-grown plants. Direct selection for number of flowering days proved to be efficient for improving this character in both populations. Gains were also obtained for other characters. Interactions of temperature and photoperiod and temperature and genotypes affected soybean flowering time and produced alterations in other correlated agronomic characters, including productivity.
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Claims 7
Claim · model-written summary
Lower early field temperatures delayed soybean flowering.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Lower temperaturese0
- Outcome
- floweringe0
- Direction
- delaye0
- Setting
- field plantinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lower temperatures early in the field planting caused a delay in flowering.”
t0“soybean”
Claim · model-written summary
Delayed flowering broadened the amplitude of all evaluated characters.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- floweringe0
- Outcome
- amplitude in all characters evaluatede0
- Direction
- broadere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Delayed flowering caused a broader amplitude in all characters evaluated”
t0“soybean”
Claim · model-written summary
Selection gains were higher for field-grown than greenhouse-grown soybean plants following delayed flowering.
- Taxon
- soybeanGlycine maxt0
- Outcome
- selection gainse0
- Direction
- highere0
- Comparator
- greenhouse-grown plantse0
- Setting
- field-growne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulted in higher selection gains for the field-grown plants than for the greenhouse-grown plants.”
t0“soybean”
Claim · model-written summary
Direct selection for flowering days efficiently improved this character in both populations.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Direct selection for number of flowering dayse0
- Outcome
- flowering dayse0
- Direction
- improvinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Direct selection for number of flowering days proved to be efficient for improving this character in both populations.”
t0“soybean”
Claim · model-written summary
Selection also produced gains in other characters.
- Taxon
- soybeanGlycine maxt0
- Outcome
- other characterse0
- Direction
- Gainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gains were also obtained for other characters.”
t0“soybean”
Claim · model-written summary
Temperature by photoperiod and temperature by genotype interactions affected soybean flowering time.
- Taxon
- soybeanGlycine maxe0
- Treatment
- temperature and photoperiode0
- Outcome
- soybean flowering timee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Interactions of temperature and photoperiod and temperature and genotypes affected soybean flowering time”
Claim · model-written summary
These interactions altered correlated agronomic characters, including productivity.
- Taxon
- soybeanGlycine maxt0
- Material
- F2 populationst0
- Outcome
- other correlated agronomic characters, including productivitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“produced alterations in other correlated agronomic characters, including productivity.”
t0“soybean (Glycine max L.Merrill) F2 populations”
The same questions in other papers
stage · phenology · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
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