Abstract
Abstract Leymus chinensis (Trin.) Tzvel. is a perennial grass with high productivity and forage value; however, poor stand establishment, often due to seed dormancy, limits its widespread use for forage production. To investigate the mechanism of seed dormancy and to develop effective methods of improving germination, the contribution of each part of the caryopsis to dormancy was investigated, and a number of single or combined dormancy‐breaking pre‐treatments were conducted using three seed lots. The palea, lemma, pericarp/testa, and endosperm all contributed to seed dormancy. The contribution of each part to dormancy was 23·4%, lemma; 6·2%, palea; 28·4%, pericarp/testa; and 42·0%, endosperm. Hull (palea and lemma) removal, pericarp/testa piercing, and soaking in distilled water or 30% sodium hydroxide (Na OH ) significantly decreased the percentage of dormant seeds (i.e. increased germination). Treating hull‐removed and pericarp/testa‐pierced seeds with gibberellic acid ( GA 3 ) also significantly decreased the percentage of dormant seeds. Compared with each of the single pre‐treatments, the combined pre‐treatment of pre‐soaking in water for 1 d, then 30% Na OH for 60 min and treating with 300 μ m GA 3 resulted in the highest germination (89%); and seed viability was 91%.
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Claims 11
Claim · model-written summary
The lemma contributed 23·4% of seed dormancy.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Organ / stage
- lemmae0
- Outcome
- dormancye0
- Value
- 23·4%e0
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“The contribution of each part to dormancy was 23·4%, lemma”
Claim · model-written summary
The palea contributed 6·2% of seed dormancy.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Organ / stage
- paleae0
- Outcome
- dormancye0
- Value
- 6·2%e0
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“The contribution of each part to dormancy was 23·4%, lemma; 6·2%, palea”
Claim · model-written summary
The pericarp/testa contributed 28·4% of seed dormancy.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Organ / stage
- pericarp/testae0
- Outcome
- dormancye0
- Value
- 28·4%e0
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“The contribution of each part to dormancy was 23·4%, lemma; 6·2%, palea; 28·4%, pericarp/testa”
Claim · model-written summary
The endosperm contributed 42·0% of seed dormancy.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Organ / stage
- endosperme0
- Outcome
- dormancye0
- Value
- 42·0%e0
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“The contribution of each part to dormancy was 23·4%, lemma; 6·2%, palea; 28·4%, pericarp/testa; and 42·0%, endosperm”
Claim · model-written summary
Hull removal significantly decreased dormant seeds.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Treatment
- Hull (palea and lemma) removale0
- Outcome
- percentage of dormant seedse0
- Direction
- decreasede0
Not reportedComparator
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“Hull (palea and lemma) removal, pericarp/testa piercing, and soaking in distilled water or 30% sodium hydroxide (Na OH ) significantly decreased the percentage of dormant seeds (i.e. increased germination)”
Claim · model-written summary
Pericarp/testa piercing significantly decreased dormant seeds.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Treatment
- pericarp/testa piercinge0
- Outcome
- percentage of dormant seedse0
- Direction
- decreasede0
Not reportedComparator
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“pericarp/testa piercing, and soaking in distilled water or 30% sodium hydroxide (Na OH ) significantly decreased the percentage of dormant seeds”
Claim · model-written summary
Soaking in distilled water significantly decreased dormant seeds.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Treatment
- soaking in distilled watere0
- Outcome
- percentage of dormant seedse0
- Direction
- decreasede0
Not reportedComparator
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“soaking in distilled water or 30% sodium hydroxide (Na OH ) significantly decreased the percentage of dormant seeds”
Claim · model-written summary
Soaking in 30% sodium hydroxide significantly decreased dormant seeds.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Treatment
- 30% sodium hydroxide (Na OH )e0
- Outcome
- percentage of dormant seedse0
- Direction
- decreasede0
Not reportedComparator
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“soaking in distilled water or 30% sodium hydroxide (Na OH ) significantly decreased the percentage of dormant seeds”
Claim · model-written summary
Gibberellic acid treatment of hull-removed and pierced seeds significantly decreased dormancy.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Treatment
- gibberellic acid ( GA 3 )e0
- Outcome
- percentage of dormant seedse0
- Direction
- decreasede0
- Qualifier
- hull‐removed and pericarp/testa‐pierced seedse0
Not reportedComparator
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“Treating hull‐removed and pericarp/testa‐pierced seeds with gibberellic acid ( GA 3 ) also significantly decreased the percentage of dormant seeds”
Claim · model-written summary
The combined pretreatment produced the highest germination, 89%, compared with single pretreatments.
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“Compared with each of the single pre‐treatments, the combined pre‐treatment of pre‐soaking in water for 1 d, then 30% Na OH for 60 min and treating with 300 μ m GA 3 resulted in the highest germination (89%)”
Claim · model-written summary
Seed viability was 91% under the combined treatment.
- Taxon
- Leymus chinensis (Trin.) Tzvel.Leymus chinensist0
- Outcome
- seed viabilitye0
- Value
- 91%e0
Verbatim
t0“Leymus chinensis (Trin.) Tzvel.”
e0“seed viability was 91%”
The same questions in other papers
sodium hydroxide · growth · Leymus chinensisResults agree
1 paper in the same direction as this paper
- positive
Gibberellic acid · growth · Leymus chinensisResults agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.