Abstract
Under short-season western Canadian growing conditions, vernalization non-responsiveness is generally considered a preferable spring wheat (Triticum aestivum L.) phenotype, to avoid inconsistent maturity and yield patterns. The objectives of this study were to investigate the genetic factors affecting early flowering and maturity, and related agronomic traits, in a set of five Canadian spring wheat cultivars. The cultivars were first studied under 10- and 16-h photoperiods and 0- and 42-d vernalization treatments. Thereafter, the parents and F 1 hybrids from a one-way diallel mating design were grown with and without a 42-d vernalization treatment. Shorter photoperiod delayed flowering time in all cultivars, and increased final leaf number in AC Barrie. Vernalization hastened flowering and decreased final leaf number in AC Foremost and AC Taber. AC Foremost and AC Taber carry at least one different allele, from the rest of the cultivars studied, at the major loci governing vernalization response. Leaf and spikelet number on the main culm, days to anthesis and maturity, tiller number and yield plant -1 were mainly controlled by additive gene action. Narrow-sense heritability was medium to high (0.53–0.93) for final leaf number, days to anthesis, spikelet number and grain yield, but low to medium (0.20–0.71) for days to maturity and tiller number. Selection for early flowering under non-vernalizing conditions may aid in the breeding of (vernalization non-responsive) early-maturing spring wheat cultivars in western Canada. Key words: Diallel cross, earliness, photoperiod, vernalization, Triticum aestivum L.
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Claims 11
Claim · model-written summary
Shorter photoperiod delayed flowering in all cultivars.
- Taxon
- spring wheat
Triticum aestivumt0 - Treatment
- Shorter photoperiode0
- Outcome
- flowering timee0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shorter photoperiod delayed flowering time in all cultivars”
t0“spring wheat”
Claim · model-written summary
Shorter photoperiod increased final leaf number in AC Barrie.
- Taxon
- spring wheatTriticum aestivumt0
- Material
- AC Barriee0
- Treatment
- Shorter photoperiode0
- Outcome
- final leaf numbere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shorter photoperiod delayed flowering time in all cultivars, and increased final leaf number in AC Barrie”
t0“spring wheat”
Claim · model-written summary
Vernalization hastened flowering in AC Foremost.
- Taxon
- spring wheatTriticum aestivumt0
- Material
- AC Foremoste0
- Treatment
- Vernalizatione0
- Outcome
- floweringe0
- Direction
- hastenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vernalization hastened flowering and decreased final leaf number in AC Foremost and AC Taber”
t0“spring wheat”
Claim · model-written summary
Vernalization hastened flowering in AC Taber.
- Taxon
- spring wheatTriticum aestivumt0
- Material
- AC Tabere0
- Treatment
- Vernalizatione0
- Outcome
- floweringe0
- Direction
- hastenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vernalization hastened flowering and decreased final leaf number in AC Foremost and AC Taber”
t0“spring wheat”
Claim · model-written summary
Vernalization decreased final leaf number in AC Foremost.
- Taxon
- spring wheatTriticum aestivumt0
- Material
- AC Foremoste0
- Treatment
- Vernalizatione0
- Outcome
- final leaf numbere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vernalization hastened flowering and decreased final leaf number in AC Foremost and AC Taber”
t0“spring wheat”
Claim · model-written summary
Vernalization decreased final leaf number in AC Taber.
- Taxon
- spring wheatTriticum aestivumt0
- Material
- AC Tabere0
- Treatment
- Vernalizatione0
- Outcome
- final leaf numbere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vernalization hastened flowering and decreased final leaf number in AC Foremost and AC Taber”
t0“spring wheat”
Claim · model-written summary
AC Foremost and AC Taber carry at least one allele different from the other cultivars at major vernalization response loci.
- Taxon
- spring wheatTriticum aestivumt0
- Material
- AC Foremost and AC Tabere0
- Gene
- major loci governing vernalization responsee0
- Outcome
- at least one different allelee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AC Foremost and AC Taber carry at least one different allele, from the rest of the cultivars studied, at the major loci governing vernalization response”
t0“spring wheat”
Claim · model-written summary
Additive gene action mainly controlled leaf and spikelet number, anthesis and maturity timing, tiller number, and yield.
- Taxon
- spring wheatTriticum aestivumt0
- Outcome
- Leaf and spikelet number on the main culm, days to anthesis and maturity, tiller number and yield plant -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf and spikelet number on the main culm, days to anthesis and maturity, tiller number and yield plant -1 were mainly controlled by additive gene action”
t0“spring wheat”
Claim · model-written summary
Narrow-sense heritability was medium to high for final leaf number, anthesis timing, spikelet number and grain yield.
- Taxon
- spring wheatTriticum aestivumt0
- Outcome
- Narrow-sense heritabilitye0
- Value
- 0.53–0.93e0
- Qualifier
- final leaf number, days to anthesis, spikelet number and grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Narrow-sense heritability was medium to high (0.53–0.93) for final leaf number, days to anthesis, spikelet number and grain yield”
t0“spring wheat”
Claim · model-written summary
Narrow-sense heritability was low to medium for maturity timing and tiller number.
- Taxon
- spring wheatTriticum aestivumt0
- Outcome
- days to maturity and tiller numbere0
- Value
- 0.20–0.71e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low to medium (0.20–0.71) for days to maturity and tiller number”
t0“spring wheat”
Claim · model-written summary
The authors suggest selecting for early flowering without vernalization to breed early-maturing spring wheat in western Canada.
- Taxon
- spring wheatTriticum aestivume0
- Outcome
- Selection for early flowering under non-vernalizing conditionse0
- Setting
- western Canadae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Selection for early flowering under non-vernalizing conditions may aid in the breeding of (vernalization non-responsive) early-maturing spring wheat cultivars in western Canada”
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See all 15 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.