一种花时不遇的两系水稻杂交的制种方法

Method for producing two-line rice hybrid seeds in asynchronous flowering period

Abstract

The invention provides a method for producing two-line rice hybrid seeds in asynchronous flowering period. The method includes steps of a, selecting seeds by means of carrying out seed selecting and breeding or transformation on round-grained non-glutinous sterile lines, round-grain non-glutinous general lines and round-grain non-glutinous restoration lines which are used as male parents; b, producing the hybrid seeds at the hybrid seed production time from the end of the August to the beginning of the September; c, applying fertilizers, to be more specific, spraying the boric fertilizers on the male parents in young ear periods and shifting flower seasons to an earlier time; d, removing dew on female parents by the aid of bamboo poles every morning in fine days in earing and flowering seasons of the female parents; e, harvesting the seeds, to be more specific, removing weeds with obvious difference in sheath, leaf colors, plant types, leaf types and the like in rice seedling seasons and timely harvesting the seeds when the seeds are ripe. Flower time characteristics of the round-grain non-glutinous sterile lines, the round-rain non-glutinous general lines and round-grain non-glutinous restoration lines are similar to flower time characteristics of female parent non-glutinous rice. The method has the advantages that the flower seasons can be shifted to the earlier time in modes of smartly applying the boric acid fertilizers and removing the dew in the early morning, the problem of flowering asynchronism in existing procedures for producing hybrid seeds can be solved, flower seasons of the male parents and the female parents coincide with one another, the hybrid setting percentage can be increased, and the purposes of producing the hybrid seeds and increasing the production can be achieved.
本发明提出了一种花时不遇的两系水稻杂交的制种方法,包括以下步骤:a、选种:选育或转育具有与母本籼稻花时特性相近的粳型不育系和粳型广系和恢复系作父本;b、制种:制种时间安排在8月底至9月初;c、施肥:父本在幼穗期喷施硼肥,提早花期;d、赶露水:母本抽穗扬花期,晴天每天早上用竹竽赶去母本上的露水;e、收获:秧田期把叶鞘、叶片颜色不同、株型、叶型等差异显著的杂株除去,种子成熟时及时收获。本发明通过巧施硼肥和清早赶露水的方式提早花期,解决了现有制种过程中花期、花时不遇的问题,达到父本、母本花期重合,提高了异交的结实率,达到制种增产的目的。

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    CN-104663422-AJune 03, 2015广德县农业科学研究所一种杂交水稻的制种方法
    CN-104871963-ASeptember 02, 2015安徽徽大农业有限公司Seed preparation method for blooming time overslip two-line rice hybridization
    CN-106069722-ANovember 09, 2016合肥慧谷农业科技有限公司Two-line rice hybrid seed production method for blooming time oversliping

NO-Patent Citations (0)

    Title

Cited By (0)

    Publication numberPublication dateAssigneeTitle