However, if tens of thousands of nectarine flowers are emasculated and pollinated manually, the workload is huge, and it is actually impossible to solve a large number of seeds used in production. So a kind of rice was bred as the female parent, which has a special personality, with thin stamens and withered anthers. You can't fertilize and sow with your own pollen.
In order not to cut off the offspring of the mother, we should find two objects for it. The characteristics of these two objects are different: the first object looks very much like the female parent, but has sound pollen and developed stigma. When its pollen was given to its female parents, it gave birth to a daughter.
She looks exactly like her mother, and she is also a female parent. The stamens are thin and degenerate, the anthers are withered and deformed, and there is no fertility. The other object is completely different from the female parent in appearance, generally taller than the female parent, and also has sound pollen and developed stigma. After its pollen was given to the female parent, it gave birth to a son, stronger than both parents.
Extended data:
Main value
nutrition
The harvested rice grains are called rice and have shells. When milling rice, the husk is often removed together with the rice bran layer, and sometimes a thin layer of glucose and talcum powder is added to make the rice grains shiny. Rice with only the husk removed during rice milling is called brown rice, which is rich in starch and contains about 8% protein and a small amount of fat, including thiamine, nicotinic acid, riboflavin, iron and calcium. Rice without husk and rice bran is called polished rice or white rice, and its nutritional value is greatly reduced.
Baidu encyclopedia-rice
Baidu encyclopedia-hybrid rice