Abstract: The present invention provides a parthenocarpy regulatory gene including any of the following polynucleotides and use of the parthenocarpy regulatory gene. (1) A polynucleotide that encodes an amino acid sequence represented by SEQ ID NO: 1, (2) a polynucleotide that encodes an amino acid sequence having a sequence identity of 70% or higher relative to the amino acid sequence represented by SEQ ID NO: 1, (3) a polynucleotide that encodes an amino acid sequence in which 1 to 87 amino acids are substituted and/or the like in the amino acid sequence represented by SEQ ID NO: 1, and (4) a polynucleotide that is hybridized with a polynucleotide having a sequence complementary to the polynucleotide described in the above (1) under a stringent condition.

Abstract: This invention discloses a novel cold-inducible promoter which induces gene expression at low temperatures in potato tubers but which is scarcely induced in organs other than tuber or at normal temperature, which induces gene expression for a long time not less than five months.

Abstract: A method of production of an electric contact including a contact base member of one metal and a contact member of another metal of hardness lower than that of the contact base member joined to the contact member at one end portion thereof, with the method comprising the steps of forming a blind hole at the one end portion of the contact base member and applying pressure simultaneously to the contact base member and the contact member after the contact member is inserted and filled in the blind hole, to thereby cause the metals of the two members undergo plastic deformation to join them together in intimate contact with each other.

Abstract: A regulator handle assembly for the positional control of a car window glass includes a handle lever combined with a spring-loaded manual knob arranged slidable and rotatable on a hollow sleeve made at the free end of the handle lever integral therewith. This knob is slidable relative to the hollow sleeve and in the outward direction when manipulating the handle so as to enlarge the overall height thereof against action of a coil spring mounted within the knob. When the manual operating pressure is released, the knob is automatically returned to its height-shortened normal position under the influence of the coil spring.