Abstract
Kernel filling is related directly to kernel weight and yield. To analyze filling characteristics at different kernel positions on an ear and their relationship with stalk sugar in maize, we investigated kernel filling rate, kernel water content and stalk sugar content at different kernel position at 10, 20, 30, 40 and 50 days after pollination using two hybrids and their parents in 2015 and 2016, respectively. The results showed that filling rate at apical kernels of ear was significantly lower than that of middle and basal kernels, and the difference was maximum when filling rate reached its peak value. The relative differences between the middle and basal kernel filling rate is small, however, before the peak value, the basal kernel filling rate was higher than that of middle, and after the peak value, the filling rate of basal kernel was a little bit lower than that of middle. The kernel filling rates basically presented the tendency of low-high-low, but the genotype differences were also existed. 50 days after pollination, filling rates of upper part kernels still showed an increasing trend for some varieties. The stalk sugar had a close relationship with kernel filling rate, when the consumption of stalk sugar was in maximum value, filling rates of kernels was basically at its peak value, and the performance of hybrid was especially obvious. The utilization of hybrids with high stalk sugar and appropriate delay of harvest may be helpful for further increasing kernel weight in maize.
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Claims 8
Claim · model-written summary
Apical kernel filling rate was significantly lower than at middle and basal positions.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“filling rate at apical kernels of ear was significantly lower than that of middle and basal kernels”
t0“in Maize”
Claim · model-written summary
The apical versus middle and basal filling-rate difference was greatest at peak filling.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the difference was maximum when filling rate reached its peak value.”
t0“in Maize”
Claim · model-written summary
Before peak filling, basal kernel filling rate exceeded middle kernel filling rate.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“before the peak value, the basal kernel filling rate was higher than that of middle”
t0“in Maize”
Claim · model-written summary
After peak filling, basal kernel filling rate was slightly lower than middle kernel filling rate.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after the peak value, the filling rate of basal kernel was a little bit lower than that of middle.”
t0“in Maize”
Claim · model-written summary
Kernel filling rates generally followed a low-high-low pattern with genotype differences.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The kernel filling rates basically presented the tendency of low-high-low, but the genotype differences were also existed.”
t0“in Maize”
Claim · model-written summary
At 50 days after pollination, upper kernel filling rates were still increasing in some varieties.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50 days after pollination, filling rates of upper part kernels still showed an increasing trend for some varieties.”
t0“in Maize”
Claim · model-written summary
Stalk sugar consumption peaked around the peak in kernel filling rates, especially in hybrids.
- Compound
- stalk sugare0
- Outcome
- filling rates of kernelse0
- Direction
- peak valuee0
- Qualifier
- performance of hybrid was especially obviouse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the consumption of stalk sugar was in maximum value, filling rates of kernels was basically at its peak value, and the performance of hybrid was especially obvious.”
t0“in Maize”
Claim · model-written summary
The authors suggest using high-stalk-sugar hybrids and delaying harvest to increase maize kernel weight.
- Outcome
- utilization of hybrids with high stalk sugar and appropriate delay of harveste0
- Qualifier
- may be helpful for further increasing kernel weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The utilization of hybrids with high stalk sugar and appropriate delay of harvest may be helpful for further increasing kernel weight in maize.”