Breeding and Breeding of Good Breeding Breeding Plants can be used to refer to the plant's leaf physiological structure. Leaf is the main organ of crop photosynthesis. The level of crop yield is closely related to the area of ​​its leaves and the time of action. More than 80% of wheat grain yield is determined by post-flowering function. The accumulation of photosynthate in leaves was a significant positive correlation between flag leaf area and ear weight. Chlorophyll content is an important indicator to measure the photosynthetic characteristics. Under certain conditions, the chlorophyll content is proportional to the photosynthetic rate. The leaf area of ​​the plant can be measured using a portable leaf area meter, while the chlorophyll content is measured using a chlorophyll meter.
By using the leaf area detector to verify the relationship between leaf area and chlorophyll content and the synthesis of organic matter in wheat, that is, the accumulation of dry matter, it was found that the following points should be noted in the breeding process of wheat varieties:
Leaf size problem: large spike wheat leaves can not be too large, leaf area is too large, especially the flag leaf area and the upper two leaf area is too large, easy to cause group Yu cover, due to the glory of the leaves, make their plant type loose, resulting in units The reduction in the number of panicles in the area led to a decrease in grain yield, and the type of leaf with a relatively small leaf area and high photosynthetic efficiency was selected.
The level of chlorophyll content: Chlorophyll content has a certain relationship with the synthesis of organic matter in wheat, and the level of chlorophyll content has a certain relationship with some of the resistance of wheat, because when pathogens infect plants, they often can occur with chloroplasts. The interaction resulted in the disintegration of the chloroplasts. Severe morbidity and even chlorophyll synthesis were blocked, and symptoms such as leaf chlorosis, yellowing or mosaicism appeared. This problem has been verified in many plants. Therefore, in order to understand the disease resistance of plants, the chlorophyll content can be measured using a chlorophyll meter to understand the disease resistance of plants.
By using the leaf area detector to verify the relationship between leaf area and chlorophyll content and the synthesis of organic matter in wheat, that is, the accumulation of dry matter, it was found that the following points should be noted in the breeding process of wheat varieties:
Leaf size problem: large spike wheat leaves can not be too large, leaf area is too large, especially the flag leaf area and the upper two leaf area is too large, easy to cause group Yu cover, due to the glory of the leaves, make their plant type loose, resulting in units The reduction in the number of panicles in the area led to a decrease in grain yield, and the type of leaf with a relatively small leaf area and high photosynthetic efficiency was selected.
The level of chlorophyll content: Chlorophyll content has a certain relationship with the synthesis of organic matter in wheat, and the level of chlorophyll content has a certain relationship with some of the resistance of wheat, because when pathogens infect plants, they often can occur with chloroplasts. The interaction resulted in the disintegration of the chloroplasts. Severe morbidity and even chlorophyll synthesis were blocked, and symptoms such as leaf chlorosis, yellowing or mosaicism appeared. This problem has been verified in many plants. Therefore, in order to understand the disease resistance of plants, the chlorophyll content can be measured using a chlorophyll meter to understand the disease resistance of plants.