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Efficient stamen killing method for japonica rice

A high-efficiency technology for japonica rice, which is applied to the field of efficient and fast japonica rice killing, can solve the problems of low work efficiency, large workload of manual killing, and achieves the effects of convenient killing of males, high hybrid outcrossing, and improved hybridization efficiency.

Inactive Publication Date: 2017-02-15
JIANGSU WUJIN RICE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems of large workload and low work efficiency of artificial detasseling in the current rice cultivation process, and provides a fast, efficient and quick detasseling method in the hybridization process of japonica rice

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0013] (1) Dig out the female parent soil that needs to be hybridized in the afternoon before flowering or in the morning of the same day, and cut off the old and tender tillers;

[0014] (2) In the afternoon or morning of the day before pollination, select rice ears that have entered full bloom within two or three days, and use scissors to cut the glumes along the middle and lower parts of the anthers (the anthers must be cut). spikelets, and then use clear water to water upwards from the base of the ear to the top of the ear to complete the killing of males;

[0015] (3) Put the kraft paper bag on the female parent after killing the male, and plant together the female parent of the kraft paper bag;

[0016] (4) When the flowers are in full bloom, the male parents are pollinated one by one, the kraft paper bags of the pollinated female parents are folded and sealed, and then checked regularly to prevent insects and mildew, and harvest when the hybrids are mature.

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Abstract

The invention relates to an efficient stamen killing method for japonica rice. The method includes: digging out female parents which need hybridization in the afternoon of the day before a blooming day or in the morning of the blooming day, shearing off excessively old and excessively tender tillers, selecting rice spikes which enter full blooming in 2-3 days, shearing open glumes along the middles of anthers with scissors, removing bloomed glumous flowers during glume shearing, and upwardly watering from the roots of the rice spikes with clean water to complete stamen killing; sleeving the female parents after the stamen killing with kraft bags, moving the female parents to places near male parents, and taking the male parents for pollination during full blooming. The clean water stamen killing method for the japonica rice has the advantages that convenient and fast stamen killing of the japonica rice is achieved, the method is low in glume shearing requirements and thorough in stamen killing, and hybridization efficiency is increased evidently; the problems that a hot-water stamen killing method kills pistils due to excessively high temperature and is not thorough in stamen killing due to excessively low temperature are solved, and the method is low in pistil damage, good in pollination effect, high in hybrid outcrossing seed-setting, and the like.

Description

technical field [0001] The invention belongs to the technical field of detasseling in the process of hybrid breeding of japonica rice, and in particular relates to an efficient and rapid japonica rice detasseling method. Background technique [0002] In the process of rice scientific research and breeding, especially when rice is heading and flowering, the flowering period is only more than ten days, which is a short time. Not only the heading of the intermediate materials, observation of flowering time, etc., but also the selection of parents and the hybridization of the group are required. The workload is very heavy. Huge, and this period of time is very critical to the entire breeding work-the basis of subsequent breed selection techniques, the largest workload of hybrid breeding should be manual killing, and this work is the key to the success or failure of hybridization. Here During this period, if a good and the simplest technical means can be used, and a good male kil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 朱邦辉徐洁芬宋学堂刘古春张庆徐玉峰
Owner JIANGSU WUJIN RICE RES INST
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