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A kind of subtropical region promotes cassava flowering hybrid breeding method

A subtropical area, hybrid breeding technology, applied in the field of crop cultivation, can solve problems such as difficult and accurate control, achieve strong cold resistance, strong adaptability, and promote the growth of roots

Inactive Publication Date: 2017-04-19
广西壮族自治区农业科学院经济作物研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The breeding technology for cassava flowering controlled by the above patent applications is mainly achieved through strict planting and management methods such as foliar fertilizer, artificial flower control, flower preservation, and regulation of the ratio of male and female flowers. However, the above methods are not only difficult to implement accurately Control, especially in the regulation of chemical regulation and artificial agronomic measures, in addition, it is necessary to measure the pollen vigor to select genes with good traits for pollination test. It can be said that the controllable cassava flowering seeds obtained by the above method are "flowers in the greenhouse." "The success rate is high under completely strict experimental conditions, but it is difficult to implement in a harsh environment. Although Guangxi is located in the subtropics, the temperature is moderate all year round, and there are no major disasters, but it is inevitable that low temperatures, strong winds, and large outbreaks of diseases and insect pests will occur. In order to obtain good genes that can be really popularized and applied, it is necessary to study the local cassava growth environment in Guangxi before it can be successfully promoted in this area

Method used

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  • A kind of subtropical region promotes cassava flowering hybrid breeding method
  • A kind of subtropical region promotes cassava flowering hybrid breeding method
  • A kind of subtropical region promotes cassava flowering hybrid breeding method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First, the inventor carried out the implementation of the invention technology in February 2012 in Wuming Lijian, Nanning, Guangxi, as follows:

[0028] (1) Land plot selection: choose a wasteland around Lijian Town, Wuming County, Nanning, Guangxi to implement this technology. The soil in this land is relatively poor, and no crops have been planted for many years. NPK levels were also lower.

[0029] At the same time, the land is surrounded by open land, without tall shelters, good lighting conditions, good ventilation, and flat terrain.

[0030] (2) Planting management:

[0031] ① Soil preparation: shallow plowing will be carried out on the selected land, and a small amount of compound fertilizer will be applied as the base fertilizer at the same time. Use 20 kg of 45% compound fertilizer per mu. After spreading evenly, turn the land and level it, and open ditches.

[0032] ②Plant when the average temperature of the day is 16°C, and choose perennial cassava as paren...

Embodiment 2

[0045] With the technology of the present invention, the inventor has also carried out cassava hybridization selection and breeding in Hepu, Fangchenggang, Beihai, Guangxi, and has achieved good results.

[0046] Table of results of flowering-promoting cross breeding of Hepu cassava in Beihai

[0047]

[0048] Results of flowering-promoting crossbreeding of cassava in Fangchenggang

[0049]

[0050] It can be seen from the above data that the technology of the present invention has excellent flowering-promoting effects in Nanning, Hepu and Hepu, Beihai, indicating that the technology has better adaptability in Guangxi.

[0051] At the same time, the inventor also found that the offspring bred by this technology have the following excellent traits through years of observation in many places: strong cold resistance, resistance to red spiders and high yield.

[0052] The following are the statistical results of the three trials:

[0053] Test results in three places in 20...

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Abstract

The invention relates to a cross breeding method for facilitating blooming of cassava in subtropical areas. The cross breeding method comprises the following steps: field selection, planting management, fertilization management, carbon and nitrogen nutrition level regulation, and cross breeding. A cassava sexual hybridization new species prepared by the cross breeding method has the characteristics of high red spider mite resistance, strong cold tolerance and good productivity, and is suitable for planting and popularizing in subtropical areas.

Description

technical field [0001] The invention belongs to the technical field of crop cultivation, and in particular relates to a cassava flowering hybrid breeding method in subtropical regions. Background technique [0002] cassava, scientific name Manihot esculenta Crantz Cassava, English name Cassava, alias cassava, cassava, is a perennial (tropical and subtropical) or annual (temperate) shrub of the Euphorbiaceae cassava (Manihot). Cassava originated in South America. It generally shows normal flowering and fruiting in tropical areas, such as normal flowering in tropical areas of Hainan Province in my country, and normal cross-breeding work can be carried out. [0003] The cassava planting area in Guangxi is about 4 million mu, accounting for more than 60% of the national cassava planting area; cassava has become one of the main economic crops in Guangxi. However, because Guangxi is a subtropical region, historically Guangxi cassava could not undergo normal flowering, pollinati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01G1/00A01C21/00
Inventor 韦本辉甘秀芹刘斌周佳申章佑李艳英劳承英胡泊宁秀呈
Owner 广西壮族自治区农业科学院经济作物研究所
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