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Breeding method of large embryo rice variety

A technology of giant embryos and varieties, applied in the field of rice breeding, can solve the problems of difficult to breed giant embryos indica varieties or strains, and achieve the effects of saving manpower, speed, and improving nutritional quality

Inactive Publication Date: 2003-07-16
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that giant embryo is controlled by a single recessive gene. Up to now, there has been no report of directly using the method of mutagenesis to obtain giant embryo indica rice at home and abroad. If the giant embryo japonica rice is used for breeding, due to the separation of its offspring, it is difficult to select and breed suitable rice. The giant embryo indica rice varieties or strains required for production,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Irradiate 500 grams of dry seeds of Longtepu B with a dose rate of 1Gy / min, 400Gy dose of gamma-rays, M 1 The densely planted clusters are planted into 10,000 seedlings and more than 20,000 spikes; mixed harvest M 2 Seeds, shelled into brown rice, giant embryo mutant rice grains were found from brown rice, grown into seedlings in the incubator, and cultivated in the field to present M 2 plant; M 3 The adult line was bred into giant embryo Longtepu B, which was recorded as Longtepu geB.

Embodiment 2

[0020] Irradiate 500 grams of Minghui 63 dry seeds with a dose rate of 1Gy / min, 400Gy dose of gamma-rays, M 1 The densely planted clusters are planted into 10,000 seedlings and more than 20,000 spikes; mixed harvest M 2 Seeds, shelled into brown rice, giant embryo mutant rice grains were found from brown rice, grown into seedlings in the incubator, and cultivated in the field to present M 2 plant; M 3 The adult line was bred into the giant embryo Minghui 63, which was recorded as Minghui 63ge.

Embodiment 3

[0022] F 1 , and then take Longtepu A as the female parent, and take F 1 BC obtained by backcrossing for the male parent 1 f 1 , Mixed BC 1 f 1 The grains are put on the rice plants, and the giant embryo brown rice is selected by husking, and the Longtepu giant embryo male sterile line is bred, which is recorded as Longtepu geA.

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Abstract

A method for breeding the giant-embryo paddy rice variety features that the seeds of paddy rice are mutagenized according to the cryptogenetic property of the giant-embryo gene, a backcross method isused to obtain the corresponding giant-embryo sterile line, and after matching, the hybridized variety of giant-embryo paddy rice is obtained. Its advnatages are high nutritive value, high speed and low cost.

Description

technical field [0001] The invention belongs to a rice breeding method, in particular to a breeding method of a giant embryo rice variety. Background technique [0002] In brown rice, the crude fat and protein content of the seed embryo is 2 to 3 times that of the endosperm, and it is rich in vitamins; when polished rice is processed, most of the embryo enters the rice bran, so the embryo does not contribute much to the nutritional components of edible polished rice. However, refined rice with embryos once appeared in the Japanese market, and brown rice is also sold on the shelves of foreign supermarkets. The black rice sold in the existing Chinese market is also brown rice. The size of mesoembryo has a great influence on its nutritional quality. [0003] In 1981, Japanese scholars HiKaru Satoh and Takeshi Omura used the chemical mutagen MNU to treat the fertilized egg cells of Jin Nanfeng, and in the third generation of mutagenesis (MNU 3 ) seed population obtained giant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/06
Inventor 杨仁崔章清杞李毓杨艳荔
Owner FUJIAN AGRI & FORESTRY UNIV