Temperature and light conditions have a great influence on the value of potato paddling. In the chlorophyll analyzer test, the temperature of the blade at 20°C and the illumination time of 12h was the highest, and the padding value of the different leaf positions was the most stable. On the other hand, the padding value of leaves treated with light for 8 h and 15 °C was the lowest, which may be due to the low temperature and short illumination that was not conducive to the formation of potato chlorophyll. However, under high temperature and long illumination conditions, the sap value measured by chlorophyll analyzer was slightly lower than that of medium light. Warm conditions indicate that high temperatures accelerate the decomposition of chlorophyll.
The difference in pad values ​​of the upper eight leaves was not significant at high temperature and long illumination (light 16h and temperature 25°C), and there was no significant difference in paddid values ​​of all leaves under medium temperature and light (light 12h and temperature 20°C). The SPAD-502 chlorophyll analyzer showed no significant difference in the padding value of the upper 4 leaves under low-temperature and short-light conditions and high-temperature and long-term lighting. Under medium temperature conditions, the padding values ​​of the top 8 leaves were not significantly different.
The SPAD-502 chlorophyll meter was used to provide the basis for determining the leaf position during the determination of potato paddling value. When determining the paddle leaf value of potato, the 3rd leaf and 4th leaf were selected as the sampling leaf. When measuring other physiological indicators of leaves, whether it is also suitable to choose inverted 3 leaves, inverted 4 leaves is more suitable for further study.
The chlorophyll meter SPAD-502 was used to measure the regular change of the padding value between different leaf positions of potato. The general trend of changes in the paddle leaf values ​​of the two varieties tested was that the top four leaves had higher chlorophyll content, indicating that the chlorophyll content of the leaf at this site was higher, and the SPAD-502 chlorophyll meter showed that the padding value decreased with the leaf position. And falling. This may be related to the synthesis and decomposition of chlorophyll in plants. Newly-grown leaves exhibit rapid chlorophyll synthesis and less decomposition. Therefore, they show high chlorophyll content. The lower leaves of the plants are born early, have a long leaf age, and the leaves are aging. Chlorophyll synthesis is low. Decomposition is fast.
The difference in pad values ​​of the upper eight leaves was not significant at high temperature and long illumination (light 16h and temperature 25°C), and there was no significant difference in paddid values ​​of all leaves under medium temperature and light (light 12h and temperature 20°C). The SPAD-502 chlorophyll analyzer showed no significant difference in the padding value of the upper 4 leaves under low-temperature and short-light conditions and high-temperature and long-term lighting. Under medium temperature conditions, the padding values ​​of the top 8 leaves were not significantly different.
The SPAD-502 chlorophyll meter was used to provide the basis for determining the leaf position during the determination of potato paddling value. When determining the paddle leaf value of potato, the 3rd leaf and 4th leaf were selected as the sampling leaf. When measuring other physiological indicators of leaves, whether it is also suitable to choose inverted 3 leaves, inverted 4 leaves is more suitable for further study.
The chlorophyll meter SPAD-502 was used to measure the regular change of the padding value between different leaf positions of potato. The general trend of changes in the paddle leaf values ​​of the two varieties tested was that the top four leaves had higher chlorophyll content, indicating that the chlorophyll content of the leaf at this site was higher, and the SPAD-502 chlorophyll meter showed that the padding value decreased with the leaf position. And falling. This may be related to the synthesis and decomposition of chlorophyll in plants. Newly-grown leaves exhibit rapid chlorophyll synthesis and less decomposition. Therefore, they show high chlorophyll content. The lower leaves of the plants are born early, have a long leaf age, and the leaves are aging. Chlorophyll synthesis is low. Decomposition is fast.
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