18 results about "Interspecific hybrids" patented technology

The invention relates to a male gamete killer gene S19g-A1 of a rice interspecific hybrid sterile S19 seat and application of the male gamete killer gene S19g-A1. The invention provides a rice hybrid sterility related protein S19g-A1. The amino acid sequence of the rice hybrid sterility related protein S19g-A1 is as shown in SEQ ID NO. 2. According to the invention, a key gene S19g-A1 of a rice interspecific hybrid sterile S19 site is researched and identified, function knockout is carried out on African rice S19g-A1, and pollen fertility of a mutant hybrid F1 obtained by carrying out distant hybridization on an obtained African rice s19g-a1 mutant returns to normal. Based on a gene editing technology, the invention develops a method for rapidly creating a hybrid affinity line capable of overcoming sterility of African rice hybrid, effectively eliminates S19 locus mediated interspecific hybrid reproductive disorder, breaks through the bottleneck of rice interspecific hybrid advantage utilization, provides target gene resources for distant hybrid advantage utilization and crop yield improvement, and has a wide application prospect. Good application prospects are realized.

The invention discloses a method for creating offspring of buckwheat interspecific hybridization. According to the invention, the immature embryo can be successfully obtained through artificial hybridization by taking wild buckwheat as a female parent and tartary buckwheat as a male parent; in order to solve the problems that the induction rate of an immature embryo on a callus induction culture medium is low and the differentiation rate is low when the callus is subjected to differentiation culture in a differentiation culture medium, the callus induction culture medium and the differentiation culture medium are optimized and screened; the obtained callus induction culture medium and the obtained differentiation culture medium remarkably improve the callus induction rate and the differentiation rate during differentiation culture, regenerated plants are obtained at high frequency, colchicine doubling is performed on the regenerated plants on the basis, and a doubled interspecific hybridization new germplasm is obtained by combining morphological and cytological identification. The method is applied to breeding of high-yield stress-resistant, high-flavone, perennial and other breakthrough new varieties or serves as a hybrid bridge parent, and the excellent characters of stress resistance, high flavone, perennial and the like of wild buckwheat are introduced into buckwheat cultivation.

The application relates to the field of molecular breeding, in particular to a molecular marker for identifying interspecific hybrid of brassica rapa and coelonema and application thereof. The molecular marker comprises one pair of brassica rapa specific primers and one pair of coelonema specific primers. The identification method comprises the following steps: obtaining a sample to be identified, taking genomic DNA of the material as a template, and using two specific primer pairs for amplification; performing agarose gel electrophoresis operation on the amplified product; and judging the authenticity of the interspecific hybrid by observing the electrophoresis strip.

The present disclosure relates to Cucurbitaceae allotetraploid plants and hybrid allopolyploid plants having desirable traits, such as resistance to an abiotic or biotic stressor, which may be used as rootstock for cultivated varieties. The disclosure further relates to composite Cucurbitaceae plants comprising the allopoly ploid plants described herein as the rootstock. The disclosure further relates to methods of producing Cucurbitaceae allopolyploid plants and hybrid allopolyploid plants.

The invention relates to a design and use method of a specific probe library for accurately identifying wild species chromosomes in peanut interspecific hybrids, which specifically comprises the following steps: assembling a T2T reference genome of a peanut related wild species Zw61, then carrying out bioinformatics analysis on the genome sequence and published Tifrunner, YZ9102, A. duranensis and A. ipaensis reference genomes, and finally identifying the chromosomes of the wild species in the peanut interspecific hybrids. An oligonucleotide library containing 91500 cultivated species and Zw61 variation group sequences is obtained, the oligonucleotide library comprises 10 oligonucleotide pools corresponding to chromosomes 1-10 of Zw61, the oligonucleotide library can be used for accurately identifying artificially synthesized hexaploid F1 of the cultivated species and the wild species and exogenous chromosomes in hybrid progenies through single-chromosome coating, and the identity of the exogenous chromosomes can be accurately determined; the problem that peanut distant hybridization exogenous chromosomes are difficult to identify is solved, and particularly the identification problem of exogenous chromosomes which are very close to cultivated species in genetic relationship and high in chromosome homology is solved.

The invention relates to the technical field of breeding, in particular to a method for breeding a sterile line of japonica rice with wide affinity, high exposure and early blossoming. According to the method, through combination of multi-parent hybridization and multiple cross with marker-assisted selection and phenotype tracking, accurate polymerization of multiple characters such as wide affinity, high exposure and early blossoming is realized, the breeding efficiency is high, the bred 'Ning46A' is high in seed production suitability, can be matched with an indica-japonica restorer line, fully utilizes the heterosis between subspecies, and has important production and application values.

This invention discloses a method for creating a flavorful sweet and sour melon through interspecific hybridization of thick-skinned melon and cucumber. Using the thick-skinned melon inbred line 'Baipicui' as the female parent and the cucumber inbred line 'Jinyou 406' as the male parent, artificial pollination and hybridization are performed to obtain interspecific hybrid offspring. These offspring are then subjected to several generations of self-pollination and selection to obtain the flavorful sweet and sour melon. This invention is the first to utilize interspecific hybridization between high-quality thick-skinned melon and cucumber to create a new high-quality flavorful sweet and sour melon germplasm. This new germplasm has a moderate sweet and sour taste, a well-proportioned fruit shape, and green flesh, and can be directly used for melon variety improvement.

The present disclosure relates to eggplant and pepper allotetraploid plants and hybrid allopolyploid plants having desirable traits, such as resistance to an abiotic or biotic stressor, which may be used as rootstock for cultivated varieties. The disclosure further relates to composite eggplants and pepper plants comprising the allopolyploid plants described herein as the rootstock. The disclosure further relates to methods of producing eggplant and pepper allopolyploid plants and hybrid allopolyploid plants.

The invention relates to the field of molecular breeding, in particular to a primer for identifying a Chinese cabbage and blue fragrant mustard intergeneric hybrid based on a KASP technology and application of the primer. The identification method comprises the following steps: obtaining a to-be-identified sample, taking genome DNA of the material as a template, and performing amplification by using a KASP primer pair; and carrying out fluorescence signal detection on the amplified product to judge the authenticity of the intergeneric hybrid.

The utility model discloses a melon interspecific hybrid tissue culture seedling domestication device relates to plant seedling domestication device technical field. Its structure includes nutrient solution groove, matrix groove, double -deck light -transmitting light -supplementing cover and ventilation adjustment assembly, and the matrix groove is installed in the nutrient solution groove, and ventilation adjustment assembly is installed on the nutrient solution groove and matrix groove, and ventilation adjustment assembly divides matrix groove and is divided into a plurality of seedling domestication area, and every seedling domestication area installs a double -deck light -transmitting light -supplementing cover. The utility model discloses through double -deck light -transmitting light -supplementing cover and temperature feedback system realizes environment accurate control, adopts M shape cotton line, filter cotton section constructs microcirculation nutrition supply system, and combines the partition formula modular design and promotes space utilization rate and operating efficiency, and the device is verified through the test, can make interspecific hybrid domestication survival rate to improve, and domestication period shortens, provides efficient technical solution for melon interspecific hybrid breeding.

This invention discloses SSR marker primers specific to the filamentous petals of gerberas and their applications. This invention utilizes SSR molecular markers to effectively identify different filamentous petal traits in gerberas, resulting in an SSR marker primer that can rapidly and accurately identify the petal traits of gerbera plants with different filamentous petals and the F1 generation of interspecific hybrids. The SSR marker primers provided by this invention can effectively distinguish between filamentous and non-filamentous petals in gerberas and exhibit significant polymorphism, with an accuracy greater than 65%. Furthermore, compared with traditional morphological trait observation methods, the identification method provided by this invention has better repeatability, saves time, and has high specificity. It can replace traditional morphological identification methods, effectively improving the molecular-level breeding process of gerberas and reducing the identification cycle of traditional morphological trait observation. It also allows for early screening to obtain gerbera offspring with superior filamentous varieties, which is of great significance for gerbera breeding.

The invention is applicable to the technical field of molecular biology, and provides an InDel marker and a primer group for identifying species of sika deer and red deer and application of the InDel marker and the primer group, the InDel marker is located at a 6116106 site of a fifth chromosome NC057819.1 of the red deer, 120bp of a DNA sequence shown in a sequence table SEQ ID NO: 1 is deleted at the site, and the DNA sequence exists in the sika deer. The invention also provides a primer group for identifying species of sika deer and red deer. The primer group comprises an upstream primer and a downstream primer which are designed aiming at the InDel marker. Based on high-throughput whole genome data of the sika deer and the red deer, the interspecific InDel marker is screened, a corresponding genetic typing technology is established, a technical system which is efficient in detection, low in cost and suitable for large-scale sample screening is constructed, accurate identification of the sika deer, the red deer and interspecific hybrid individuals can be achieved, and better application value is achieved.

This invention relates to a male gamete protection gene S19g-A7 and its application in improving rice hybrid fertility and hybrid rice breeding. This invention identifies a male gamete protection gene S19g-A7 at the S19 locus of interspecific hybrid sterility in rice, whose encoded amino acid sequence is shown in SEQ ID NO.2. Introducing the S19g-A7 gene into Asian rice for functional complementation can break the S19 locus-mediated interspecific hybrid sterility in rice, rapidly creating hybrid compatible lines that overcome interspecific hybrid sterility in Asian and African rice. This provides genetic resources and breeding methods for utilizing distant hybrid vigor in high-quality rice germplasm breeding, and has significant application value.

The present disclosure relates to eggplant and pepper allotetraploid plants and hybrid allopolyploid plants having desirable traits, such as resistance to an abiotic or biotic stressor, which may be used as rootstock for cultivated varieties. The disclosure further relates to composite eggplants and pepper plants comprising the allopolyploid plants described herein as the rootstock. The disclosure further relates to methods of producing eggplant and pepper allopolyploid plants and hybrid allopolyploid plants.

The present application belongs to the technical field of preparation of excellent commercial seed of economic marine shellfish, and particularly relates to a high-efficiency method for preparing interspecific three-way hybrid of Argopecten genus scallop. The method uses a selected and purified male sterile and female fertile hybrid Argopecten mactrolineatus as a female parent, and a restocked Argopecten purpuratus as a male parent, to produce a "Argopecten mactrolineatus Argopecten purpuratus" three-way hybrid scallop commercial seed with hybrid vigor and outstanding stress resistance. The method can realize large-scale, continuous and efficient hybrid seed production, and has the advantages of simple operation, labor saving, low dependence on personnel, and the like. The hybridization rate is increased from less than 30% in the prior art to more than 90%, and the efficiency of interspecific hybrid seed production and the purity of the seed of the protandrous Argopecten genus scallop are significantly improved.

This invention discloses a method for interspecific hybridization and seedling cultivation of *Pterocarya spp.* and *Pterocarya martensii*, comprising: selecting mature, live male *Pterocarya spp.*, cleaning and drying them, placing them in seawater, continuously aerating and artificially circulating the water to induce natural sperm release; dissecting mature female *Pterocarya martensii* to extract gonads, collecting mature eggs, cleaning them, and allowing them to settle to obtain an egg mixture; adding ammonia to the egg mixture to activate the eggs; adding the activated egg mixture to a sperm-containing water body for fertilization in the dark; after successful fertilization, removing the male *Pterocarya spp.* and transferring the fertilized eggs to a seedling pond; and cultivating the fertilized eggs in seawater to develop into D-shaped larvae. This invention is the first of its kind for distant hybridization and seedling cultivation of *Pterocarya spp.* and *Pterocarya martensii*, breaking through the reproductive isolation between the two species, achieving stable and efficient hybridization and fertilization. The process is simple and highly stable, and can cultivate new hybrid pearl oyster seedlings that combine the excellent traits of both parents. It has significant implications and promotional value for the innovation of marine pearl oyster germplasm and industrial upgrading.

A molecular marker for identifying Vitis vinifera and its interspecific hybrid grapes and an application thereof are provided. Through whole-genome resequencing data analysis, a significant InDel locus IH1 is identified, which is located at 7,224,357 base pairs (bp) on chromosome 13 of grapes. This locus shows genotypic differences between Vitis vinifera and its interspecific hybrids. Through the differences in the number and distribution of electrophoretic bands, Vitis vinifera and its interspecific hybrids may be distinguished. Based on the characteristics of this molecular marker, it may be used for screening of interspecific hybrid progeny lines in the early stage of breeding and elimination of selfed progeny. At the same time, it may also conduct screening of the genetic background of seedlings.

The invention discloses a method for evaluating the comprehensive quality of blackberry interspecific hybridization single plants, which comprises the following steps: 1) taking blackberries as female parents and wild rubus corchorifolius as male parents to obtain blackberry F1 generation interspecific hybridization seedling groups; (2) collecting mature fruits of each single plant of the F1 interspecific hybrid population, and measuring various appearance quality indexes and nutritional quality indexes of the fruits to obtain character data of each fruit; (3) obtaining a correlation rule among the characters through correlation analysis; and 4) performing principal component analysis by calculating and comparing the contribution rate and the characteristic value of the fruit character, calculating to obtain the weight of each principal component, constructing a fruit comprehensive evaluation model, and obtaining the comprehensive evaluation score of the hybrid F1 single plant according to the model. The method for optimizing the interspecific hybrid plants of the blackberries through comprehensive evaluation of fruit characters is explored for the first time, the evaluation indexes obtained by the method can be used for rapidly and effectively screening out the hybrid single plants with excellent comprehensive characters, and the method has a good application prospect in quality breeding of the blackberries.