Abstract
In order to explicit the effect of low light at flowering stage on the kernel number per ear of maize,we simulated low light stress through artificial shading,conducted two shading rate( 60%,90%) treatments for continuous 10 days at initial tasseling stage and at silking stage,and studied the effects of low light at flowering stage on the fertilization and seed setting of florets on female ears,as well as the accumulation of dry matter and its distribution to female ears. It was found that low light stress at flowering stage led to the decrease in daily weight gain of aboveground total dry matter,the reduction in distribution proportion of dry matter to female ears,the slowing of female ear growth,and the decline in rate of fertilization and seed setting; the influence of low light enlarged when the shading rate increased. Compared with the floret fertilization rate at the end of both 60% and 90% shading rate treatments at initial tasseling stage,the final seed setting rate was markedly increased. While in comparison with the floret fertilization rate at the end of both 60% and 90% shading rate treatments at silking stage,the final seed setting rate was decreased or similar. The final kernel number per ear of maize was decreased by 57% ~ 91% and 43% ~ 81% due to the light insufficient at initial tasseling stage and at silking stage,respectively. The daily average photosynthetically active radiation intensity in shading treatment period of both initial tasseling stage and silking stage had the greatest effect on the formation of kernels,followed by daily weight gain of aboveground total dry matter in shading treatment period. The daily average temperature in shading treatment period of silking stage also had directly positive effect on the kernel number per ear of maize.
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Claims 12
Claim · model-written summary
Low light stress at flowering stage decreased daily weight gain of aboveground total dry matter in maize.
- Treatment
- low light stress at flowering stagee1
- Outcome
- daily weight gain of aboveground total dry mattere1
- Direction
- decreasee1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e1“It was found that low light stress at flowering stage led to the decrease in daily weight gain of aboveground total dry matter”
Claim · model-written summary
Low light stress at flowering stage reduced the distribution proportion of dry matter to female ears of maize.
- Treatment
- low light stress at flowering stagee1
- Outcome
- distribution proportion of dry matter to female earse2
- Direction
- reductione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e1“It was found that low light stress at flowering stage led to the decrease in daily weight gain of aboveground total dry matter”
e2“the reduction in distribution proportion of dry matter to female ears”
Claim · model-written summary
Low light stress at flowering stage slowed female ear growth in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e1“It was found that low light stress at flowering stage led to the decrease in daily weight gain of aboveground total dry matter”
e3“the slowing of female ear growth”
Claim · model-written summary
Low light stress at flowering stage declined the rate of fertilization and seed setting of maize florets.
- Treatment
- low light stress at flowering stagee1
- Outcome
- rate of fertilization and seed settinge4
- Direction
- declinee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e1“It was found that low light stress at flowering stage led to the decrease in daily weight gain of aboveground total dry matter”
e4“the decline in rate of fertilization and seed setting”
Claim · model-written summary
The influence of low light on maize increased as the shading rate increased.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e5“the influence of low light enlarged when the shading rate increased”
Claim · model-written summary
At initial tasseling stage, the final seed setting rate of maize florets was markedly increased relative to the fertilization rate under 60% and 90% shading.
- Treatment
- shading rate treatments at initial tasseling stagee6
- Outcome
- final seed setting ratee6
- Direction
- markedly increasede6
- Comparator
- floret fertilization rate at the end of both 60% and 90% shading rate treatments at initial tasseling stagee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e6“Compared with the floret fertilization rate at the end of both 60% and 90% shading rate treatments at initial tasseling stage,the final seed setting rate was markedly increased”
Claim · model-written summary
At silking stage, the final seed setting rate of maize florets was decreased or similar relative to the fertilization rate under 60% and 90% shading.
- Treatment
- shading rate treatments at silking stagee7
- Outcome
- final seed setting ratee7
- Direction
- decreased or similare7
- Comparator
- floret fertilization rate at the end of both 60% and 90% shading rate treatments at silking stagee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e7“While in comparison with the floret fertilization rate at the end of both 60% and 90% shading rate treatments at silking stage,the final seed setting rate was decreased or similar”
Claim · model-written summary
Light insufficiency at initial tasseling stage decreased the final kernel number per ear of maize by 57% to 91%.
- Treatment
- light insufficient at initial tasseling stagee1
- Outcome
- final kernel number per ear of maizee1
- Direction
- decreasede1
- Value
- 57% ~ 91%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e1“The final kernel number per ear of maize was decreased by 57% ~ 91% and 43% ~ 81% due to the light insufficient at initial tasseling stage and at silking stage,respectively”
Claim · model-written summary
Light insufficiency at silking stage decreased the final kernel number per ear of maize by 43% to 81%.
- Treatment
- light insufficiente1
- Outcome
- final kernel number per ear of maizee1
- Direction
- decreasede1
- Value
- 43% ~ 81%e1
- Qualifier
- at silking stagee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e1“The final kernel number per ear of maize was decreased by 57% ~ 91% and 43% ~ 81% due to the light insufficient at initial tasseling stage and at silking stage,respectively”
Claim · model-written summary
Daily average photosynthetically active radiation during shading had the greatest effect on kernel formation in maize.
- Treatment
- daily average photosynthetically active radiation intensity in shading treatment periode1
- Outcome
- formation of kernelse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e1“The daily average photosynthetically active radiation intensity in shading treatment period of both initial tasseling stage and silking stage had the greatest effect on the formation of kernels”
Claim · model-written summary
Daily weight gain of aboveground total dry matter during shading followed photosynthetically active radiation as a factor of kernel formation.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e1“The daily average photosynthetically active radiation intensity in shading treatment period of both initial tasseling stage and silking stage had the greatest effect on the formation of kernels”
e2“followed by daily weight gain of aboveground total dry matter in shading treatment period”
Claim · model-written summary
Daily average temperature during shading at silking stage had a directly positive effect on kernel number per ear of maize.
- Treatment
- daily average temperature in shading treatment period of silking stagee1
- Outcome
- kernel number per ear of maizee1
- Direction
- positivee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Kernel Number per Ear of Maize”
e1“The daily average temperature in shading treatment period of silking stage also had directly positive effect on the kernel number per ear of maize”
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See all 57 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.