34results about How to "Unaffected by environmental conditions" patented technology

The invention discloses a rice fertility gene SAW1 and its application. The nucleotide sequence of the gene SAW1 is shown in SEQ ID NO.1, and the encoded amino acid sequence is shown in SEQ ID NO.2. Knocking out the gene SAW1 can abort rice anthers, and can be applied to the creation of sterile lines and the preparation of hybrid seeds. The male sterile line produced based on the mutation of gene SAW1 has stable fertility and is not affected by environmental conditions. It provides necessary elements for the construction of a new hybrid breeding system and has good application value and prospects.

The invention relates to the field of interaction of laser and matter in strong-field physics, in particular to an optical soliton generation device and method with an adjustable center frequency. The optical soliton generation device comprises a laser, an action structure and a receiver. The method includes the steps that S1, an interval d between periodical medium planes is selected, the size delta of a periodical medium is obtained according to the formula that d=2*delta, and a periodical micro-nano structure is formed; S2, short-period ultra-short laser pulse is introduced, and the laser pulse is transmitted in the medium; S3, the reflection electric field and the transmission electric field generated when the pulse is transmitted in the periodical micro-nano structure are recorded respectively; S4, the recorded data are processed and analyzed, and then soliton pulse is obtained. By changing the size of the medium in the periodical micro-nano structure, the transmission process of the pulse in the micro-nano structure is affected, the final transmission electric field is further affected, and solitons of different frequencies are obtained. The optical soliton generation method is simple, easy to implement, free of influences of environment conditions and good in stability and repeatability of the system, and well realizes the adjustable center frequency of the optical solitons.

The invention discloses a DNA molecule identification method of coenospecies of Xishi abalone and Haliotis discus hannai Ino, relating to the DNA molecule marker detection of an abalone, in particular to a method for carrying out molecule identification to the authenticity of the coenospecies of an interspecific coenospecies generation of the Xishi abalone and the Haliotis discus hannai Ino by utilizing a molecule marker technology (microsatellite technology). The invention provides a DNA molecule identification method of the coenospecies of the Xishi abalone and the Haliotis discus hannai Ino by using microsatellite molecular marker, which has the advantages of high polymorphism, stable heredity and not being affected by environment conditions, etc, and can identify the authenticity of the coenospecies of the interspecific coenospecies generation of the Xishi abalone and the Haliotis discus hannai Ino during the large scale interspecific hybridization species production process of the Xishi abalone and the Haliotis discus hannai Ino. The genome DNA of the coenospecies generation of the Xishi abalone and the Haliotis discus hannai Ino is extracted by adopting a phenol chloroform method and PCR amplification reaction is carried out by taking the extracted genome DNA as a template to obtain the amplification product; gel electrophoresis and dyeing are carried out to the amplification product, and the map is compared; and comparison is carried out according to the electrophoresis result and the provided standard map.