Two-line rice hybrid seed production method for blooming time oversliping

Abstract

The invention provides a two-line rice hybrid seed production method for blooming time oversliping. The method comprises the following steps that a, seeds are selected, wherein a japonica rice sterile line, a japonica rice wide line and a restoring line with the similar flowering time characteristics of female parent nonglutinous rice are selected or transferred as a male parent; b, seeds are produced, wherein the seed production time is set from the end of August to early September; c, fertilizer is applied, wherein boric fertilizer is applied in the young ear stage of the male parent to enable the flowering phase to be achieved early; d, dew is removed, wherein in the earing and blooming stage of the female parent, bamboo poles are used every morning in fine days for remove dew on the female parent; 2, harvesting is carried out, wherein abnormal plants with sheath and leaf colors, plant types and leaf types obviously different from those of normal plants are removed in the seedling stage, and harvesting is carried out in time when seeds are harvested. The flowering phase is made early by applying boric fertilizer skillfully and removing dew in early morning, the problems of flowering phase and blooming time oversliping are solved, flowering phases of the male parents and the female parent coincide, the outcrossing maturing rate is improved, and the purposes of seed production and yield increasing are achieved.

Description

technical field [0001] The invention relates to a hybrid seed production method of two-line rice which does not meet at flowering time. Background technique [0002] The hybrid rice that was popularized in the past is a combination of indica and japonica type. Since the parents of this type of combination are both indica rice, the flowering habits are roughly the same. It is not obvious that there is no contradiction between flowering and flowering during seed production. As long as there is a good seedling frame, the flowering period is good. High yield can be obtained. However, in recent years, indica-japonica subspecies hybrid seed production, because the multi-indica light (warm) male sterile line is used as the female parent, and the japonica or partially japonica-type wide line and restorer line are used as the male parent, although the advantages are obvious, but the flower Occasionally, the phenomenon is easy to occur, which results in a low seed setting rate. Con...

AI Technical Summary

Problems solved by technology

However, in recent years, indica-japonica subspecies hybrid seed production, because the multi-indica light (warm) male sterile line is used as the female parent, and the japonica or partially japonica-type wide line and restorer line are used as the male parent, although the advantages are obvious, but the flower Occurs easily, which leads to low seed setting rate