7 results about "Harmonia axyridis" patented technology

The invention discloses a target gene capable of adapting to hunger stress of axyridis polyaxyridis, which is an HvarAKR1B1 gene for coding aldose reductase, and is used for detecting the hunger stress and comparing the gene expression and metabolite change of the axyridis polyaxyridis through transcriptomics and metabonomics technologies. The key gene for responding to hunger stress of the heterodylaea axyridis is screened by difference analysis and is verified by an RNAi (Ribonucleic Acid Interference) technology. After the gene is silenced, the survival rate, the eclosion rate and the survival rate from the 4-instar larva to the adult larva of the heterodylaea polyalaea are obviously reduced, and the RNAi-mediated gene reduces the hunger tolerance of the heterodylaea polyalaea. Therefore, the silence or overexpression of the gene can obtain the effect of effectively regulating and controlling the population quantity of the axyridis polyaxyridis, and the gene has relatively good popularization and application values.

Chiral isomeric sulfite compounds, and preparative separation and application of chiral structures thereof are disclosed,. which belong to the technical field of agriculture. The present disclosure has found that the chiral isomeric sulfite compounds having the structure of general formula (A) have excellent inhibitory activities against pest eggs, especially have strong inhibitory activities against eggs of thrips, mites, Lepidoptera moths, Aleyrodidae and Harmonia axyridis, and meanwhile have germicidal activity, and their absolute configuration are obtained through preparative separation. The compounds with such structures can be used for killing pest eggs and germs, and have high research value of agrochemical, having broad application prospects in the field of agricultural pharmacy. 20 25 20 23 00 31 M ar 2 02 5 2 0 2 5 2 0 2 3 0 0 3 1 M a r 2 0 2 5

Chiral isomeric sulfite compounds, and preparative separation and application of chiral structures thereof are disclosed, which belong to the technical field of agriculture. The present disclosure has found that the chiral isomeric sulfite compounds having the structure of general formula (A) have excellent inhibitory activities against pest eggs, especially have strong inhibitory activities against eggs of thrips, mites, Lepidoptera moths, Aleyrodidae and Harmonia axyridis, and meanwhile have germicidal activity, and their absolute configuration are obtained through preparative separation. The compounds with such structures can be used for killing pest eggs and germs, and have high research value of agrochemical, having broad application prospects in the field of agricultural pharmacy.

The invention belongs to the technical field of agricultural pest control and provides a method for controlling facility crop pests by using functional plants. The method comprises the following steps: transplanting cnidium monnieri seedlings into a crop field before field planting or seedling emergence of crops; hanging the cnidium monnieri in the potted flowering period above crops planted on the ground, and replacing the cnidium monnieri with a new potted cnidium monnieri in the flowering period after the cnidium monnieri enters a green fruit period; releasing egg cards of natural enemies, orius sativus, encarsia formosa and harmonia axyridis 3 days after the potted snake bed is placed; when the cnidium monnieri on the ground enters the jointing stage, cnidium monnieri seeds are sown in the original position. According to the method, the crop yield is not reduced, meanwhile, damage caused by outbreak of pest populations is avoided, meanwhile, use of chemical insecticides is reduced, and green production of crops is promoted. The functional plant cnidium monnieri is planted in the greenhouse and used for conserving natural enemy insects released in the greenhouse, conserving of the natural enemy insects and prevention and control of pests can be considered at the same time, population growth of the natural enemy insects is promoted, and the cost of manually releasing natural enemies is reduced.

The invention belongs to but is not limited to the technical field of pest biological control, and discloses a method for relieving reproductive decline of harmonia axyridis, which is suitable for indoor long-term breeding populations incapable of avoiding inbreeding, in particular to rare homozygous mutants needing long-term conservation. The method specifically comprises the following steps: feeding offspring new eclosion adults which show reproductive decline after being fed with aphids as food with artificial feed prepared by mixing pork liver homogenate, rape pollen, cane sugar, yeast powder, honey and the like for 3-4 days, and then feeding the adults with the aphids; in the feeding process after the ladybirds start to lay eggs, 7-day aphids and 1-day artificial feed are adopted for feeding circularly, and high reproductive power is kept. In addition, when severely reproductive decline occurs to adults fed with the aphids in daily life, the adults are fed with artificial feed for 3 days in time, then aphid feeding is recovered, and the egg laying amount and the egg hatching rate can be remarkably increased within a short time. According to the method, the reproductive decline of the harmonia axyridis bred indoors for a long time is effectively relieved through short-term intermittent artificial feed feeding.

Chiral isomeric sulfite compounds, and preparative separation and application of chiral structures thereof are disclosed,.which belong to the technical field of agriculture. The present disclosure has found that the chiral isomeric sulfite compounds having the structure of general formula (A) have excellent inhibitory activities against pest eggs, especially have strong inhibitory activities against eggs of thrips, mites, Lepidoptera moths, Aleyrodidae and Harmonia axyridis, and meanwhile have germicidal activity, and their absolute configuration are obtained through preparative separation. The compounds with such structures can be used for killing pest eggs and germs, and have high research value of agrochemical, having broad application prospects in the field of agricultural pharmacy.

The application discloses an attractant composition which is composed of cis-9-tetradecenyl acetate and 3-methyl-2-butanol with a mass ratio of (1-4):(1-4). It is found for the first time that cis-9-tetradecenyl acetate has an attracting effect on both female and male Harmonia axyridis, 3-methyl-2-butanol can increase the attracting effect of cis-9-tetradecenyl acetate on Harmonia axyridis, and 3-methyl-2-butanol also has a certain attracting effect on Harmonia axyridis. Therefore, cis-9-tetradecenyl acetate or the combination of cis-9-tetradecenyl acetate and 3-methyl-2-butanol can be used to attract Harmonia axyridis in a local area, improve the population density of Harmonia axyridis, so that the utilization rate of Harmonia axyridis in a field can be improved, and the biological control efficiency of Harmonia axyridis can be enhanced.