Russian experts have found that the precocious substances contained in some asteraceae plants can destroy the juvenile hormones of aphids and aphids and the functions of multiple organs, effectively suppress the growth and development of pests, and do not cause harm to beneficial insects such as bees.
According to a report by the Russian "Scientific Information" magazine this week, experts from the Institute of Ecology and Evolution of the University of the Russian Academy of Sciences, the Institute of Ecology and Evolution of the Swerzhov Institute, used the leaves of M. sinensis and F. edulis to feed on larvae of aphids and aphids. As a result, these larvae did not die. It is premature larvae, and premature larvae that grow old can't breed.
Further studies have found that the precocious ingredients contained in these plants act as insecticides and can act on neurosecretory cells in the brains of pest larvae, destroying the normal secretion process of larvae. The pest's digestive system is also damaged: the intestines become thinner and the intestinal epithelial cells change significantly. In addition, this precociousness also destroys the wax glands of pest larvae, making it impossible to secrete substances that prevent the organs from drying out, hindering their foraging and courtship and rendering them unable to reproduce.
At the same time, experiments with bees show that precociousness not only does not affect the normal function of bees, but also kills the aphids parasitizing them, thereby treating bee lice.
As early as 1976, scientists discovered that the Asteraceae plant contains precocious substances that destroy insect juvenile hormones such as cockroaches. The Russian study revealed this process in more detail. Russian researchers hope to find more similar bioactive substances that are effective in killing pests but are not harmful to humans.
According to a report by the Russian "Scientific Information" magazine this week, experts from the Institute of Ecology and Evolution of the University of the Russian Academy of Sciences, the Institute of Ecology and Evolution of the Swerzhov Institute, used the leaves of M. sinensis and F. edulis to feed on larvae of aphids and aphids. As a result, these larvae did not die. It is premature larvae, and premature larvae that grow old can't breed.
Further studies have found that the precocious ingredients contained in these plants act as insecticides and can act on neurosecretory cells in the brains of pest larvae, destroying the normal secretion process of larvae. The pest's digestive system is also damaged: the intestines become thinner and the intestinal epithelial cells change significantly. In addition, this precociousness also destroys the wax glands of pest larvae, making it impossible to secrete substances that prevent the organs from drying out, hindering their foraging and courtship and rendering them unable to reproduce.
At the same time, experiments with bees show that precociousness not only does not affect the normal function of bees, but also kills the aphids parasitizing them, thereby treating bee lice.
As early as 1976, scientists discovered that the Asteraceae plant contains precocious substances that destroy insect juvenile hormones such as cockroaches. The Russian study revealed this process in more detail. Russian researchers hope to find more similar bioactive substances that are effective in killing pests but are not harmful to humans.
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