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New cultivar, method for differentiating plant cultivars, and method for causing earlier maturing of rice individual

A rice and variety technology, applied in the fields of botanical equipment and methods, plant products, biochemical equipment and methods, etc., can solve problems such as poor filling, decreased taste, and late maturity.

Inactive Publication Date: 2013-12-04
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when Koshihikari is cultivated in the southern region, the earing time is too early, and sufficient yield cannot be expected.
Also, due to the continued high temperature during the earing period, the taste is reduced
On the other hand, when Koshihikari is cultivated in the northern region, it will ripen late, and even if the ears can emerge, the low temperature will make the filling poor, and the rice cannot be harvested.

Method used

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  • New cultivar, method for differentiating plant cultivars, and method for causing earlier maturing of rice individual
  • New cultivar, method for differentiating plant cultivars, and method for causing earlier maturing of rice individual
  • New cultivar, method for differentiating plant cultivars, and method for causing earlier maturing of rice individual

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Embodiment 1

[0095] Koshihikari H5 was crossed with Koshihikari H3, and in the Koshihikari chromosome, only the QTS14 region and the Hd1 region were replaced with a chromosome segment derived from Habadak, and a new variety was bred.

[0096] Specifically, Koshihikari H3 was crossed with Koshihikari H5, and two of the obtained offspring individuals (seeds) were cultivated to self-pollinate (self-cross), and further 100 offspring individual seeds were obtained. All the 100 seeds were cultivated, and DNA markers of each offspring individual were investigated, and one DNA marker M3-Cg (Hd1) and DNA marker M3-Ag (QTS14) were screened out as Habadak-derived alleles Cultivated individuals of homologous chromosomal regions. The inventor named the new variety "Koshihikari No. 5".

[0097] In a field in Chiba Prefecture, the heading date of Koshihikari No. 6 was determined (sowing date: May 6, 2010, transplantation date: June 1, 2010). The measurement results are shown together with the results o...

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Abstract

The objective of the present invention is to provide: a new cultivar of rice that matures earlier than an original cultivar; and a method for causing the earlier maturing of rice individuals. The present invention relates to: rice cultivar Koshihikari-kazusa 6 go, which has a cultivar registration application number of 25587; a progeny individual obtained by hybridizing two individuals selected from the group consisting of an individual of the aforementioned cultivar and a progeny individual thereof; and a method that is for causing the earlier maturing of rice individuals and that is characterized by replacing the region of the third chromosome of a rice individual corresponding to the region containing base number 31,720,064 to 31,724,043 in the third chromosome of rice cultivar Nipponbare with a chromosome fragment comprising the corresponding region of rice cultivar Habataki or rice cultivar Koshihikari kazusa 6 go.

Description

technical field [0001] The invention relates to a new variety cultivated by non-gene recombination, a method for identifying the new variety, and a method for making individual rice mature early. Background technique [0002] Groups that belong to the same biological species but are different from other groups in certain traits due to differences in genetic structure are called breeds. That is to say, even if the plants are of the same species, their cultivation difficulty, resistance to diseases and insect pests, yield, quality, etc. will be different depending on the variety. Therefore, for crops, especially major crops such as rice and wheat, in order to obtain better varieties, variety improvement has been continuously carried out since ancient times. Breed improvement. [0003] With recent advances in nucleic acid analysis technology, etc., the genes of various plants such as Arabidopsis thaliana, rice, and wheat have been deciphered, and the obtained genetic informat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H5/00C12N15/09A01G22/22
CPCC12N15/8262A01H5/10C12Q1/6895C12Q2600/156
Inventor 林少扬
Owner HONDA MOTOR CO LTD
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