Abstract
The present study examined the influence of humidity on the senescence in rice plant leaves. 1. Plants were grown for 11 days under 75% humidity with 12/12 hr; light/dark cycle, then grown at 60% or 90% humidity. Decrease in chlorophyll content of the third leaf in low humidity was faster than in high humidity, suggesting that leaf senescence progressed in low humidity more rapidly than in high humidity. 2. Water content was lower for plants grown in low humidity than those grown in high humidity. The decrease of water content was followed by the decrease of chlorophyll content. 3. High humidity increased the leaf area and accelerated the leaf emergence. 4. The products of photosynthesis in the third leaf were necessary for yong leaf emergence. The more the translocated materials from the third leaf, the faster the senescence of it. These results suggested that low humidity induced the decrease of water content, which stimulated the loss of chlorophyll (leaf senescence), and high humidity promoted the growth, which results in the delay of the third leaf senescence.
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Claims 9
Claim · model-written summary
Chlorophyll content of the third leaf decreased faster under low humidity than under high humidity.
- Taxon
- Rice
Oryza sativat0 - Organ / stage
- third leafe1
- Treatment
- low humiditye1
- Outcome
- chlorophyll content of the third leafe1
- Direction
- fastere1
- Comparator
- high humiditye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e1“Decrease in chlorophyll content of the third leaf in low humidity was faster than in high humidity”
Claim · model-written summary
Rice plants grown under low humidity had lower water content than those under high humidity.
- Taxon
- RiceOryza sativat0
- Treatment
- low humiditye3
- Outcome
- Water contente3
- Direction
- lowere3
- Comparator
- high humiditye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e3“Water content was lower for plants grown in low humidity than those grown in high humidity”
Claim · model-written summary
Decrease of water content in rice leaves was followed by decrease of chlorophyll content.
- Taxon
- RiceOryza sativat0
- Treatment
- decrease of water contente4
- Outcome
- chlorophyll contente4
- Direction
- decreasee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e4“The decrease of water content was followed by the decrease of chlorophyll content”
Claim · model-written summary
High humidity increased the leaf area of rice plants.
- Taxon
- RiceOryza sativat0
- Treatment
- High humiditye5
- Outcome
- leaf areae5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e5“High humidity increased the leaf area and accelerated the leaf emergence”
Claim · model-written summary
High humidity accelerated leaf emergence in rice plants.
- Taxon
- RiceOryza sativat0
- Treatment
- High humiditye5
- Outcome
- leaf emergencee5
- Direction
- acceleratede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e5“High humidity increased the leaf area and accelerated the leaf emergence”
Claim · model-written summary
Products of photosynthesis in the third leaf were necessary for young leaf emergence.
- Taxon
- RiceOryza sativat0
- Organ / stage
- third leafe6
- Outcome
- yong leaf emergencee6
- Qualifier
- products of photosynthesise6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e6“The products of photosynthesis in the third leaf were necessary for yong leaf emergence”
Claim · model-written summary
More materials translocated from the third leaf were associated with faster senescence of that leaf.
- Taxon
- RiceOryza sativat0
- Treatment
- translocated materials from the third leafe7
- Outcome
- senescencee7
- Direction
- fastere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e7“The more the translocated materials from the third leaf, the faster the senescence of it”
Claim · model-written summary
Low humidity induced decrease of water content, which stimulated loss of chlorophyll in rice leaves.
- Taxon
- RiceOryza sativat0
- Treatment
- low humiditye0
- Outcome
- loss of chlorophylle0
- Qualifier
- decrease of water contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“low humidity induced the decrease of water content, which stimulated the loss of chlorophyll (leaf senescence)”
Claim · model-written summary
High humidity delayed third-leaf senescence in rice, which the authors link to promoted growth.
- Taxon
- RiceOryza sativat0
- Treatment
- high humiditye0
- Outcome
- third leaf senescencee0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“high humidity promoted the growth, which results in the delay of the third leaf senescence”