A kind of breeding method of radish maintainer line with ogura male sterile cytoplasm

Abstract

The invention belongs to the technical field of crop breeding, and in particular discloses a radish maintainer line with Ogura male-sterile cytoplasms and a breeding method for the radish maintainer line with the Ogura male-sterile cytoplasms. The radish maintainer line with the Ogura male-sterile cytoplasms is characterized by comprising the Ogura male-sterile cytoplasms, wherein the maintainer line has a maintaining function on a sterile line with Ogura H-shaped male-sterile cytoplasms; female and male organs of the maintainer line normally grow and are high in self-fruitfulness; pistils of a male sterile line normally grow, and stamens pistils of the male sterile line are completely degraded and do not have effective pollens. The radish maintainer line breaks through the breeding range and the breeding method of conventional maintainer lines; the maintainer line which has the maintaining function on an Ogura cytoplasms male sterile line is selected from fertile plants with an Ogura cytoplasm type, so that the breeding range of the maintainer line is further expanded, and the very important significance on further research on the male sterility of the Ogura cytoplasms is achieved.

Description

(1) Technical field [0001] The invention belongs to the technical field of crop breeding, in particular to a breeding method for a radish maintainer line with Ogura male sterile cytoplasm. (2) Background technology [0002] There is obvious heterosis in cruciferous plants. Because of their small flower organs, manual detasseling operation is time-consuming and laborious, and there are few hybrid seeds obtained by one pollination. To solve this problem, breeders choose self-incompatibility. But the self-incompatibility line is easily affected by factors such as the environment, the compatibility is unstable, and the purity of the seed production is often not high. The use of plant male sterile lines for hybrid seed production can better solve the problem of self-incompatible line seed production, and can improve the purity of hybrid seeds and increase the yield of crops. It has become the main development direction of the international seed industry. [0003] The male steril...

AI Technical Summary

Problems solved by technology

[0009] When using the Ogura male sterile line for crop breeding, scientists often choose to select the maintainer line from plants without Ogura male sterile cytoplasm. From the current literature and related materials, the cytoplasm of the maintainer line of the Ogura male sterile line There are only two types, one is the normal cytoplasmic type (N type) and the other is the NWB cytoplasmic type, and no one has bred maintainer lines from plants with Ogura cytoplasm

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