Abstract
Mechanization and simplification are inevitable trends in agriculture production to decrease input demands and simultaneously improve resource use efficiency. Dry direct-seeded rice is a resource-saving cropping system and has been considered as a replacement for traditional transplanted rice. However, the poor establishment of dry direct-seeded early rice, primarily induced by chilling stress, has limited the wide adoption of this system. To examine the effects of pre-sowing seed treatments on rice germination, seedling growth and associated metabolic events under chilling stress, two seed coating treatments (Hanyubaomu coating and Miaoboshi coating) and two seed priming treatments (selenium priming and salicylic acid priming) were tested in field and growth chamber experiments. The results revealed that under chilling stress, seed priming increased the rice seed germination by 20.96-26.31 %. The length and weight of shoots and roots were also significantly increased. The two seed coating treatments were not effective in enhancing seed germination and seedling growth under chilling stress. The improved germination and seedling growth of primed seeds under chilling stress were strongly linked with higher α-amylase activity and total soluble sugar content. Conclusively, these findings will provide new avenues for understanding and advancing pre-sowing seed treatments of dry direct-seeded early rice.
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Claims 6
Claim · model-written summary
Seed priming increased rice germination under chilling by 20.96-26.31 %.
- Taxon
- rice
Oryza sativae0 - Treatment
- seed priminge0
- Outcome
- rice seed germinatione0
- Direction
- increasede0
- Value
- 20.96-26.31 %e0
- Qualifier
- chilling stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under chilling stress, seed priming increased the rice seed germination by 20.96-26.31 %.”
Claim · model-written summary
Priming significantly increased shoot and root length and weight under chilling.
- Taxon
- riceOryza sativat0
- Outcome
- length and weight of shoots and rootse0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The length and weight of shoots and roots were also significantly increased.”
t0“rice”
Claim · model-written summary
Seed coatings did not enhance germination under chilling.
- Taxon
- riceOryza sativat0
- Treatment
- seed coating treatmentse0
- Outcome
- seed germinatione0
- Qualifier
- chilling stresse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two seed coating treatments were not effective in enhancing seed germination and seedling growth under chilling stress.”
t0“rice”
Claim · model-written summary
Seed coatings did not enhance seedling growth under chilling.
- Taxon
- riceOryza sativat0
- Treatment
- seed coating treatmentse0
- Outcome
- seedling growthe0
- Qualifier
- chilling stresse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two seed coating treatments were not effective in enhancing seed germination and seedling growth under chilling stress.”
t0“rice”
Claim · model-written summary
Greater germination and growth of primed seeds were linked to higher α-amylase activity.
- Taxon
- riceOryza sativat0
- Treatment
- primed seedse0
- Gene
- α-amylasee0
- Outcome
- α-amylase activitye0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The improved germination and seedling growth of primed seeds under chilling stress were strongly linked with higher α-amylase activity and total soluble sugar content.”
t0“rice”
Claim · model-written summary
Greater germination and growth of primed seeds were linked to higher soluble sugar content.
- Taxon
- riceOryza sativat0
- Treatment
- primed seedse0
- Outcome
- total soluble sugar contente0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The improved germination and seedling growth of primed seeds under chilling stress were strongly linked with higher α-amylase activity and total soluble sugar content.”
t0“rice”
The same questions in other papers
seed treatment · growth · Oryza sativa (rice)Positive and negative results
229 papers in the same direction as this paper · 15 in the opposite direction
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