A kind of ogura type radish male sterile cytoplasm and its breeding method
A technology of male sterility and male sterility line, applied in the directions of botanical equipment and methods, biochemical equipment and methods, plant genetic improvement, etc., can solve the problems of fertility restoration and maintenance of uncertain relationship, unclear impact, etc.
Inactive Publication Date: 2019-01-08
SHANDONG CROP GERMPLASM CENT
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Problems solved by technology
The relationship between fertility recovery and maintenance among other types is still uncertain, and the impact of mitochondrial DNA variation on cytoplasmic male sterility among different types is also unclear
Method used
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Embodiment Construction
[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and implementation examples.
[0033] First select male sterile materials and homozygous fertile materials with Ogura type male sterile cytoplasm, the male sterile materials selected in the present invention have 5, 5 sterile materials are all from domestic local varieties, have Ogura type male sterile The homozygous fertile material of cytoplasm was Dahongpao, a local variety of Shandong, and Dahongpao of Zaozhuang was red-skinned and white-heart radish.
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The invention relates to the technical field of crop breeding and especially relates to Ogura-type radish male-sterile cytoplasm and a seed selection method thereof. The Ogura-type radish male-sterile cytoplasm is characterized in that a male sterile line stamen of the sterile cytoplasm thoroughly degenerates and cannot form pollens with normal functions, a gynoecium develops normally, a bud does not yellow at a low temperature and fertility keeping and recovery are different from those of the original Ogura-type male sterility line. The male-sterile cytoplasm can be used as a normal male sterile material for crop cross breeding, widens a maintainer line selection range, further discloses a orf138 sterile gene action mechanism and has a very important meaning for deep research on radish cytoplasm male sterility.
Description
(1) Technical field [0001] The invention relates to the technical field of crop breeding, in particular to an Ogura type radish male sterile cytoplasm and a breeding method thereof. (2) Background technology [0002] Plant male sterility means that in the development of flower organs, pistils develop normally, can normally receive pollen, form embryos, and finally develop into seeds; while the pollen and anther sacs of stamens are affected by factors such as genotype and environmental conditions. The inability to produce functional pollen. [0003] Male sterility caused by genotype can be divided into two types: male sterility controlled by nuclear genes, which can be divided into dominant nuclear male sterility and recessive nuclear male sterility, and male sterility controlled by nuclear genes The maintainer line selected by the breeding line only has a retention rate of 50%, and half of its offspring are fertile and half are sterile. It is difficult to directly apply it ...
Claims
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IPC IPC(8): A01H1/02C12Q1/6895
CPCA01H1/02C12Q1/6895C12Q2600/13C12Q2600/156
Inventor 王效睦白静段乃彬王俊峰谢坤
Owner SHANDONG CROP GERMPLASM CENT
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