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Artificial pollination method for controlling flowering of in-vitro ears of indica rice

A technology for artificial pollination and rice, applied in the directions of botanical equipment and methods, applications, and plant genetic improvement, can solve the problems of uncontrollable flowering time of rice spikelets, and achieve the effect of improving work efficiency

Inactive Publication Date: 2016-10-26
CHINA NAT RICE RES INST
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Problems solved by technology

[0007] In view of this, the present invention aims at the problem that the flowering time of rice spikelets cannot be controlled in hybrid rice small seed production, and provides a method of artificial pollination for controlling the flowering of isolated panicles of indica rice. Due to the relatively short flowering time of rice spikelets, artificial pollination of rice is carried out throughout the day to prepare hybrid combinations to improve technical means for cultivating high-yielding, high-quality, multi-resistant rice varieties

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  • Artificial pollination method for controlling flowering of in-vitro ears of indica rice
  • Artificial pollination method for controlling flowering of in-vitro ears of indica rice
  • Artificial pollination method for controlling flowering of in-vitro ears of indica rice

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Embodiment Construction

[0021] The implementation of the present invention will be described in detail below with examples, so as to fully understand and implement the implementation process of how the present invention uses technical means to solve technical problems and achieve technical effects.

[0022] The present invention provides a kind of artificial pollination method of controlling indica rice detached panicle flowering, comprising the following steps:

[0023] 1) Obtaining in vitro flowering tassels (male parent, pollen donor). Select healthy ears that have not yet headed (the ear buds have split and are about to head), and cut off the whole ears (about 5 cm with ear stems, which is convenient for rotating and shaking powder during artificial pollination); soak the whole ears in water for 2 to 3 minutes and sprinkle them away Put the water droplets on the ears of rice into an ordinary kraft paper envelope, fold the seal of the envelope to prevent the evaporation of water and ensure the vit...

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Abstract

The invention discloses an artificial pollination method for controlling flowering of in-vitro ears of indica rice. The method comprises steps as follows: a male parent pollen donor is selected; a female parent pollen receptor is selected; the male parent pollen donor and the female parent pollen receptor are hybridized, and an indica rice hybridized combination is obtained. With the technology, artificial pollination of rice can be conducted all day long for preparation of hybridized combinations without the limitation that flowering time of rice spikelets is relatively short under natural conditions, and a technical means is provided for cultivation of high-yield, high-quality and multi-resistance rice varieties.

Description

technical field [0001] The invention belongs to the field of rice breeding, and in particular relates to an artificial pollination method for controlling indica rice isolated panicle flowering. Background technique [0002] Rice is one of the main grain crops in my country. The rice planting area accounts for about 30% of the total area of ​​grain crops in my country, but the total output accounts for 40% of the total grain output. China is a big country in rice production and consumption, and more than 50% of the population takes rice as a staple food. It is predicted that my country's population will reach 1.6 billion by 2030. Even if the area of ​​cultivated land does not decrease, the comprehensive production capacity of food crops will still need to increase by 55% to basically meet the needs of food. Rice will account for more than 40% of the increased food production. Under the national conditions of population increase and land decrease, cultivating super-high-yiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 陶龙兴符冠富陈婷婷奉保华杨永杰张彩霞杨雪芹赵霞
Owner CHINA NAT RICE RES INST
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