Paddy rice early flowering method

Abstract

The invention discloses a paddy rice early flowering method, and belongs to the paddy rice breeding technical field; the method comprises the following steps: a, cutting 2-3 bright yellow single spikes with plump anthers at about 10:50 am; b, placing spike heads into clean water for immersion, and wetting the rice spike particles; c, knocking wet rice spikes on the palm so as to remove extra water, and shearing the rice spikes; d, gathering the sheared rice spikes and to-be pollinated hybridized female parents for bagging, closing the bag opening, and settling for 8-10 minutes; e, opening the bag and removing flowering male parent single spikes, and shaking the male parent single spikes so as to pollinate the female parents. The novel method allows the male parent paddy rice to flower in advance under low temperature, thus reducing work difficulty and intensity, and timely finishing paddy rice sexual hybridization work in the same day.

Description

technical field

[0001] The invention relates to a method for early flowering of rice and belongs to the technical field of rice propagation. Background technique

[0002] Hybrid rice breeding requires sexual crossing. When doing hybridization, one of the rice varieties used as the male parent has to wait for flowering to complete pollination. If the temperature is low that day (around 20°C), the rice will not bloom until 1:30-14:00 in the afternoon, shortening the pollination time, which increases the difficulty and intensity of the work, and affects the efficiency of sexual hybridization of rice that day. Contents of the invention

[0003] The technical problem to be solved by the present invention is to provide a method for early flowering of rice, which can effectively solve the problem that the male rice variety can flower early at low temperature (about 20°C).

[0004] The technical problem to be solved by the present invention takes the following technical solutions...

Examples

Embodiment 1

[0014] A method for early flowering of paddy rice, it comprises the following steps:

[0015] a. At around 10:50 in the morning, pick and cut 2-3 ears of single ears with plump and bright yellow anthers;

[0016] b. Soak the ear head of rice in clear water to wet the ear grains;

[0017] c. Knock the wet ears of rice on the palm a few times to remove excess water and trim the ears of rice;

[0018] d. Put the ears of rice that have been clipped and the female parent ready for pollination and hybridization into bags together, and squeeze the mouth of the bag, and put it in the bag for 8-10 minutes;

[0019] E, open sack, take out the male parent single ear, at this moment the male parent single ear has bloomed, shaking the male parent single ear can pollinate the female parent.

[0020] The invention has remarkable effects. When the temperature of the day is low (about 20°C), the male parent rice can flower at about 11:00 in the morning, 2.5-3 hours earlier, prolong the polli...

technical field

[0001] The invention relates to a method for early flowering of rice and belongs to the technical field of rice propagation. Background technique

[0002] Hybrid rice breeding requires sexual crossing. When doing hybridization, one of the rice varieties used as the male parent has to wait for flowering to complete pollination. If the temperature is low that day (around 20°C), the rice will not bloom until 1:30-14:00 in the afternoon, shortening the pollination time, which increases the difficulty and intensity of the work, and affects the efficiency of sexual hybridization of rice that day. Contents of the invention

[0003] The technical problem to be solved by the present invention is to provide a method for early flowering of rice, which can effectively solve the problem that the male rice variety can flower early at low temperature (about 20°C).

[0004] The technical problem to be solved by the present invention takes the following technical solutions...

Examples

Embodiment 1

[0014] A method for early flowering of paddy rice, it comprises the following steps:

[0015] a. At around 10:50 in the morning, pick and cut 2-3 ears of single ears with plump and bright yellow anthers;

[0016] b. Soak the ear head of rice in clear water to wet the ear grains;

[0017] c. Knock the wet ears of rice on the palm a few times to remove excess water and trim the ears of rice;

[0018] d. Put the ears of rice that have been clipped and the female parent ready for pollination and hybridization into bags together, and squeeze the mouth of the bag, and put it in the bag for 8-10 minutes;

[0019] E, open sack, take out the male parent single ear, at this moment the male parent single ear has bloomed, shaking the male parent single ear can pollinate the female parent.

[0020] The invention has remarkable effects. When the temperature of the day is low (about 20°C), the male parent rice can flower at about 11:00 in the morning, 2.5-3 hours earlier, prolong the polli...