Abstract
【Objective】The objective of the study was to elucidate the differences of the chilling sensitivity between floral buds at different developmental stages in litchi(Litchi chinensis Sonn.).【Method】The relative conductivity,hydrogen peroxide(H2O2) content,surface feature and ultrastructure in floral buds of 'Feizixiao'and 'Nuomichi'at different developmental stages,including the stageswhitish millets at which the first axillary panicle primordia emerged and primary inflorescence with elongated rachis(1 to 2 cm long) were determined or observed during an extreme cold wave from late January to late February in 2008.【Result】The results showed that low temperature resulted in the increase of H2O2 content and relative conductivity in the buds.Relative conductivity atwhitish milletsof 'Feizixiao'was stable and in low level during the cold wave.The chilled trichomes on the surface of the primary inflorescences were in disorder.Gaps and fragments were found in the trichomes of the two cultivars,but those in the 'Nuomichi'were more than in 'Feizixiao'.The trichomes of the chilled whitish millets were orderly arranged on the surface of the buds with gaps and fragments.More gaps and fragments were found in 'Nuomichi'.In contrast,the non-chilled trichomes on the floral buds were arranged orderly without any gap.In the chilled cells of the two cultivars,the cell wall was unclear,tonoplast disrupted and cytoplasm leaked into the vacuole.While the cell wall and tonoplast in the primary inflorescences or whitish milletsof the non-chilled cells were clear.【Conclusion】The studies suggested that primary inflorescences were more sensitive to chilling than whitish millets.
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Claims 11
Claim · model-written summary
Low temperature increased bud H2O2 content
LitchiNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low temperature resulted in the increase of H2O2 content and relative conductivity in the buds”
t0“litchi”
Claim · model-written summary
Low temperature increased bud relative conductivity
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low temperature resulted in the increase of H2O2 content and relative conductivity in the buds”
t0“litchi”
Claim · model-written summary
Relative conductivity in Feizixiao whitish millets remained low and stable during the cold wave
- Material
- 'Feizixiao'e0
- Organ / stage
- whitish milletse0
- Outcome
- Relative conductivitye0
- Direction
- stablee0
- Setting
- during the cold wavee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Relative conductivity atwhitish milletsof 'Feizixiao'was stable and in low level during the cold wave”
t0“litchi”
Claim · model-written summary
Chilled primary inflorescence trichomes were disordered
- Organ / stage
- primary inflorescencese0
- Treatment
- chillede0
- Outcome
- trichomes on the surface of the primary inflorescences were in disordere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chilled trichomes on the surface of the primary inflorescences were in disorder”
t0“litchi”
Claim · model-written summary
Nuomichi had more trichome gaps and fragments than Feizixiao
- Material
- 'Nuomichi'e0
- Organ / stage
- trichomese0
- Outcome
- Gaps and fragmentse0
- Direction
- moree0
- Comparator
- 'Feizixiao'e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gaps and fragments were found in the trichomes of the two cultivars,but those in the 'Nuomichi'were more than in 'Feizixiao'”
t0“litchi”
Claim · model-written summary
Chilled whitish millet trichomes stayed ordered but had gaps and fragments
- Organ / stage
- whitish milletse0
- Treatment
- chillede0
- Outcome
- trichomes of the chilled whitish millets were orderly arranged on the surface of the buds with gaps and fragmentse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The trichomes of the chilled whitish millets were orderly arranged on the surface of the buds with gaps and fragments”
t0“litchi”
Claim · model-written summary
Nuomichi had more trichome gaps and fragments
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“More gaps and fragments were found in 'Nuomichi'”
t0“litchi”
Claim · model-written summary
Non-chilled floral-bud trichomes were ordered and gap-free
- Organ / stage
- floral budse0
- Treatment
- non-chillede0
- Outcome
- trichomes on the floral buds were arranged orderly without any gape0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the non-chilled trichomes on the floral buds were arranged orderly without any gap”
t0“litchi”
Claim · model-written summary
Chilled cells showed wall, tonoplast and cytoplasmic damage
- Organ / stage
- cellse0
- Treatment
- chillede0
- Outcome
- cell wall was unclear,tonoplast disrupted and cytoplasm leaked into the vacuolee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the chilled cells of the two cultivars,the cell wall was unclear,tonoplast disrupted and cytoplasm leaked into the vacuole”
t0“litchi”
Claim · model-written summary
Non-chilled primary inflorescence and whitish-millet cells had clear walls and tonoplasts
- Treatment
- non-chillede0
- Outcome
- cell wall and tonoplast in the primary inflorescences or whitish milletsof the non-chilled cells were cleare0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cell wall and tonoplast in the primary inflorescences or whitish milletsof the non-chilled cells were clear”
t0“litchi”
Claim · model-written summary
Primary inflorescences were more chilling-sensitive than whitish millets
- Organ / stage
- primary inflorescencese0
- Outcome
- sensitive to chillinge0
- Direction
- moree0
- Comparator
- whitish milletse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“primary inflorescences were more sensitive to chilling than whitish millets”
t0“litchi”
The same questions in other papers
cold · physiology: oxidative · LitchiPositive and negative results
1 in the opposite direction
- positive
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.