Abstract
Three Hordeum vulgare×Triticum aestivum hybrids are described. The phenotypic expression of the hybrids was similar to T. aestivum. The overall mean chromosome association in the hybrids was 24.3I+1.33II (rods), +0.38II(rings)+0.15III+0.03IV+0.003VI with a 2.57 mean chiasma frequency per cell. Early pollinations of the hybrids, before stigma receptivity was evident, with respective T. aestivum cultivars, followed eight and 32 hours later by gibberellic acid (75 ppm aqueous) treatment into the floret cups yielded first backcross (BC1) seed set. The plants that resulted after embryo culture ranged in chromosome numbers from 27 to 50. Similar early pollinations of the BC1 plants with T, aestivum, coupled with two post-pollination applications of gibberellic acid after eight and 32 hours produced over 100 BC2 seeds. All BC2 plants remained self-sterile.
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Claims 7
Claim · model-written summary
The hybrids resembled T. aestivum phenotypically.
- Taxon
- Hordeum vulgare
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Hordeum vulgaret0 - Outcome
- phenotypic expression of the hybridse0
- Comparator
- T. aestivume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The phenotypic expression of the hybrids was similar to T. aestivum.”
t0“Hordeum vulgare * Triticum aestivum hybrids.”
Claim · model-written summary
The hybrids had a mean chromosome association of 24.3I+1.33II (rods), +0.38II(rings)+0.15III+0.03IV+0.003VI.
- Taxon
- Hordeum vulgareHordeum vulgaret0
- Outcome
- mean chromosome associatione0
- Value
- 24.3I+1.33II (rods), +0.38II(rings)+0.15III+0.03IV+0.003VIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The overall mean chromosome association in the hybrids was 24.3I+1.33II (rods), +0.38II(rings)+0.15III+0.03IV+0.003VI”
t0“Hordeum vulgare * Triticum aestivum hybrids.”
Claim · model-written summary
Mean chiasma frequency was 2.57 per cell.
- Taxon
- Hordeum vulgareHordeum vulgaret0
- Outcome
- mean chiasma frequency per celle0
- Value
- 2.57e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with a 2.57 mean chiasma frequency per cell”
t0“Hordeum vulgare * Triticum aestivum hybrids.”
Claim · model-written summary
Early pollination followed by gibberellic acid yielded BC1 seed set.
- Taxon
- Hordeum vulgareHordeum vulgaret0
- Treatment
- gibberellic acid (75 ppm aqueous) treatmente0
- Outcome
- first backcross (BC1) seed sete0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Early pollinations of the hybrids, before stigma receptivity was evident, with respective T. aestivum cultivars, followed eight and 32 hours later by gibberellic acid (75 ppm aqueous) treatment into the floret cups yielded first backcross (BC1) seed set.”
t0“Hordeum vulgare * Triticum aestivum hybrids.”
Claim · model-written summary
Embryo-cultured plants had chromosome numbers from 27 to 50.
- Taxon
- Hordeum vulgareHordeum vulgaret0
- Outcome
- chromosome numberse0
- Value
- 27 to 50e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plants that resulted after embryo culture ranged in chromosome numbers from 27 to 50.”
t0“Hordeum vulgare * Triticum aestivum hybrids.”
Claim · model-written summary
Early pollination of BC1 plants with two gibberellic acid applications produced over 100 BC2 seeds.
- Taxon
- Hordeum vulgareHordeum vulgaret0
- Treatment
- two post-pollination applications of gibberellic acide0
- Outcome
- BC2 seedse0
- Value
- over 100e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar early pollinations of the BC1 plants with T, aestivum, coupled with two post-pollination applications of gibberellic acid after eight and 32 hours produced over 100 BC2 seeds.”
t0“Hordeum vulgare * Triticum aestivum hybrids.”
Claim · model-written summary
All BC2 plants remained self-sterile.
- Taxon
- Hordeum vulgareHordeum vulgaret0
- Outcome
- self-sterilee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All BC2 plants remained self-sterile.”
t0“Hordeum vulgare * Triticum aestivum hybrids.”
The same questions in other papers
Gibberellic acid · yield · Hordeum vulgare (barley)Results differ
8 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
7 papers more in this group
See all 11 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.