Optional combination method utilizing Xieqing Zao A to perform test cross on a plurality of male parents

Abstract

An optional combination method utilizing Xieqing Zao A to perform test cross on a plurality of male parents relates to the agricultural technology field. The optional combination method comprises the following methods of a first season: (1), introducing male parents with the best quality to achieve test cross with the Xieqing Zao A respectively, and arranging separation devices among cells to prevent pollen from being spread among the cells; (2), knowing about a period of duration and a head spreading period of each of the male parents in details, enabling the male parents and the Xieqing Zao A to achieve matching test cross according to phase difference; (3) observing the outcrossing maturing rate of each matching cell to reserving seeds with the outcrossing maturing rate higher than 85% and weed out seeds with the outcrossing maturing rate lower than 85%, observing other expression characters specified by seed production to weed out seeds with poor expression, independently harvesting, threshing and storing the seeds by the cells, and performing marks; a second season: separately planting seeds meeting the specifications of each cell in different cells, observing cultivated characters and biological characters of the seeds, observing and measuring the seeds subjected to plant diseases and insect pests, taking samples to perform rice quality appraisal, and reserving seeds meeting the standards in the cells to perform approval; a third season: fixing up test places, performing hybrid indica joint identification, and performing approval and promotion. The optional combination method is simple and practical, and the cultivated seeds are high in quality. Therefore, the optional combination method has high practical application significance and can increase grain yield.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a method for selecting and combining multiple male parents by using Xieqingzao A to test cross. Background technique [0002] Xieqingzao A was bred by the Agricultural Science Institute of Guangde County, our province, and the applicant purchased the variety right of the female parent. So far, Xieyou 63, Xieyou 57, Xieyou 58, Xieyou 10, Xieyou 78039, etc. have been combined with this female parent. Many high-quality male parents have not been effectively matched. It is of great significance to test the mating group of the better male parent and Xieqingzao A in the current market to breed a better three-line hybrid rice combination. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a simple and easy-to-implement method for selecting and combining a plurality of male parentages with Xieqingzao A testcross. [0004...

AI Technical Summary

Problems solved by technology

Up to now, there are Xieyou 63, Xieyou 57, Xieyou 58, Xieyou 10, Xieyou 78039 and other varieties that have been paired with this female parent. Many high-quality male parents have not been effectively matched.