Cultivation of watermelon with few seeds

A cultivation method and watermelon technology, applied in botany equipment and methods, applications, plant genetic improvement, etc., can solve the problems of small melons, 4X late ripening, low seed yield, etc., and achieve quality improvement, convenient eating, and fewer seeds Effect

Inactive Publication Date: 2006-05-31
TIANJIN KERNEL VEGETABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the shortcomings of 4X, such as thick skin, late maturity, small melons, and low seed yield, only 4X watermelons with few seeds have been reported, and there are no popular varieties.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0011] Introduce S-1 and Z-10 low-seed materials, and use the S-1 materials with normal seed-setting as the female parent for genetic analysis. If about 50% of the fruits in the F1 generation are normal-seeding, about 50% of the fruits have half the seeds , and the pollen abortion rate is also about 50%. It can be preliminarily determined that this low-seed trait is caused by the translocation of two non-homologous chromosomes. Further, cytology can be used to identify when chromosomes are paired. If there are chromosomes that cannot be normal Pairing, and the formation of "cross" association, or the formation of "bridge" indicates that S-1 is a non-homologous chromosome translocation. The known homozygous translocation material of two non-homologous chromosomes was used as the female parent, and the tested translocation material Z-10 was used as the male parent for crossing, and the pollen abortion and the number of seeds of the F1 generation were observed. If there are only ...

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Abstract

A method for culturing the less-seed water melon includes such steps as determining the chromosome translocation material to obtain two non-homologous chromosome translocating bodies with different translocation sites, back crossing or selfing or test crossing to transfer them respectively to the male parent and female parent, hybridizing between said male and female parents, discriminating in field, and variety comparison. Its advantages are high transfer efficiency, and high effect to decrease the number of seeds by 45-55%.

Description

[0001] Field: [0002] The invention belongs to a method for breeding watermelons, in particular to a method for cultivating watermelons with few seeds. Background technique: [0003] At present, there are two methods for cultivating watermelons with few seeds: [0004] 1. Use 4X to cultivate watermelons with few seeds: This method is to induce 2X watermelons into 4X watermelons with 0.2% colchicine, and use the characteristics of 4X watermelons with few seeds to breed watermelons with few seeds. However, due to the shortcomings of 4X, such as thick skin, late ripening, small melons, and low seed yield, only 4X watermelons with few seeds have been reported, and there are no popular varieties. [0005] 2. Use chromosomal translocation to cultivate watermelons with few seeds: use radiation, chemical mutagenesis and other methods to create non-homologous chromosomal translocations, obtain heterozygous translocations, and then conduct homozygous selfing to breed homozygous transl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 焦定量段爱民张艳宁郝健全黄国清
Owner TIANJIN KERNEL VEGETABLE RES INST
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