Method for breeding male sterile line in ternary hybrid rice with orange red mark property

Abstract

The invention provides a method for breeding a male sterile line of a ternary hybrid rice of which sword-like leave vines, stem joints, seed glumes and branches all present an orange red mark property. The process comprises the following step: crossing maintainer lines which present the ternary hybrid rice grass color property with the maintainer lines which present the orange red mark property; and crossing F3 individual plants of which the word-like leave vines, the stem joints, the seed glumes and the branches all present the orange red mark property with the ternary male sterile lines, and selecting plants for backcross successively to obtain the male sterile line of the ternary hybrid rice of which the sword-like leave vines, the stem joints, the seed glumes and the branches all present the orange red mark property after circulating to the ninth generation. The seeds have unique leave vain, stem, seed and branch mark properties, have an anti-counterfeit function, and are easy to identify. The hybrid rice male sterile line cultured by the process can greatly reduce the workload of roguing in a seed production process, improve the purities of the parental seeds and the hybrid seeds and improve the use safety of the hybrid rice.

Description

Technical field: [0001] The invention relates to cultivating a rice cytoplasmic male sterile line with orange-red marker traits by utilizing maintainer materials of rice flag leaf veins, stem nodes, glumes and branches with orange-red marker traits, so that it has the function of anti-counterfeiting identification The new method belongs to the technical field of plant genetics. Background technique: [0002] Rice is one of the largest food crops in the world, and more than 1 / 3 of the population uses rice as the main source of food. In order to increase the yield of rice, in the early 1970s, my country successfully bred rice cytoplasmic male sterile lines on the basis of dwarf breeding, and realized the matching of three lines of wild beetle. The rapid and large-scale popularization of hybrid rice has greatly increased the average rice yield per mu in China and made important contributions to my country's grain production. [0003] At present, since the seeds of the sterile...

AI Technical Summary

Problems solved by technology

[0003] At present, since the seeds of the sterile line are almost all grass-colored and the restorer-line seeds are also grass-colored, the colors of hybrid seeds, parental seeds, and commercial rice are all the same, so it is difficult to purify and identify them. Some unscrupulous individuals have opportunities to take advantage of the fake ones, and use the inferior ones to replace the superior ones, allowing unqualified seeds to flow into the market, causing huge economic losses to food and agriculture and the country, and also causing adverse social impacts

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