Breeding method of rice small grain sterile line, and simple seed production method of hybrid rice
A technology of hybrid rice and rice, applied in botany equipment and methods, plant genetic improvement, angiosperms/flowering plants, etc., can solve the problems of mixed sowing and harvesting of parents and parents, and achieve strong storage resistance and low smut rate , germination potential and high seedling rate
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0057] The breeding process of the small-grain CMS line is as follows:
[0058] In the summer of 2011, H155S was used as the female parent, and the self-fertile two-line male sterile line C815S was crossed with Qigui B hybrid F1 as the male parent. The short-day low temperature in Hainan, the long-day low temperature in Changsha summer, and the short-day low temperature stress in Changsha autumn were selected and tested. Fertility pressurization selection in human-controlled water temperature ponds, through 5 years of 9 generations of directional cultivation, in 2016, a small-grain dual-purpose GMS line Zhuo 201S with high rice quality, ideal plant type, and low sterility starting temperature was bred. The selection process is shown in Table 1.
[0059] Table 1 Breeding flowchart of Zhuo 201S
[0060]
[0061] 3. Characteristics
[0062] 1. Fertility performance
[0063] It can be seen from Table 2 that Zhuo 201S showed male sterility in Hunan from heading and flowering ...
Embodiment 2
[0081] In April 2016, in the hybrid seed production in Haitang Bay, Sanya, Hainan, Wanghui 780, a large-grain male parent, was used as the male parent, and Zhuo 201S was used as the female parent. The father and female parents are mixed at the same time on January 25, the ratio of the parents is 1:20, and the ratio of the dry grain of the male parent to the bud valley of the female parent is 1:1; At the same time, mix and apply "Nine Twenty" 15 g / mu, do not chase the pollen when there is a breeze, artificially assist pollination once in a windless state, and mature on May 20, as Figure 4It was shown that in the mature stage of mixed seed production of Zhuo 201S and Wanghui 780, the space occupied by the male parent is small, the proportion is small, and the outcrossing rate of seed production is high. Mixed harvest on May 20. Under the condition that the sieve aperture is 2.1 mm wide and 20 mm long, mechanical screening is carried out to successfully separate the male parent...
Embodiment 3
[0087] In April 2016, when producing hybrid seeds in Haitang Bay, Sanya, Hainan, the large-grain male parent Wanghui 091 was used as the male parent, Zhuo 201S was used as the female parent, and N111S was used as the female control. The male parent was sown with a seedling tray on January 15, and the female parent was broadcast live on January 25. The ratio of the parent parent was 1:20; "Zero" 15 g / mu, if there is a breeze, the powder will not be chased, and artificially assisted pollination will be done once in the absence of wind, and the mature mixed harvest will be on May 20. Under the condition that the sieve aperture is 2.1 mm wide and 20 mm long, mechanical screening is carried out to successfully separate the male parent seeds and the female parent seeds. The purity of the female parent seed, the hybrid, was 99.51%.
[0088] While Zhuo 201S was used as the female parent for seed production, a control experiment was carried out with N111S as the female parent under th...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com