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Method for determining powdery mildew resistance of miniature rosa chinensis

A measurement method and technology of powdery mildew, which is applied in the field of plant resistance research, can solve the problem of unstable measurement results, difficulty in simulating the natural process and conditions of pathogens in the method of inoculation and identification of pathogens, and difficulty in accurately reflecting the resistance of modern rose powdery mildew in measurement results, etc. problems, to achieve the effect of meeting the incidence conditions of powdery mildew and having great practical application value

Inactive Publication Date: 2013-11-27
JIANGSU ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the existing modern rose powdery mildew resistance determination methods, the field investigation and identification method is affected by the weather conditions in different years and regions, and the measurement results are unstable; the pathogen inoculation identification method is difficult to simulate the natural process and Conditions, the measurement results are difficult to accurately reflect the powdery mildew resistance of modern roses
The invention provides a method for measuring the resistance of miniature rose powdery mildew that can fully meet the onset conditions of powdery mildew, conform to the actual production, and is simple and easy to implement. After literature search, there is no report in China

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Preparation of powdery mildew pathogen carrier: select the self-fertile miniature rose variety w14, which is less than 50cm in plant height, suitable for planting in pots with a pot diameter of 10-15cm, and is very susceptible to powdery mildew, as the powdery mildew pathogen carrier for testing, and select healthy branches of w14 Carry out cutting seedlings, and transplant them into pots after 27 days of cuttings. The size of the pots is 12 cm in diameter, with 4 plants per pot, and the substrate is peat. Afterwards, normal fertilizer and water management and prevention and control of diseases and insect pests will be carried out once after 68 days of potting. Use bactericide again, allow powdery mildew to infect and develop, select the potted flower that is seriously infected with powdery mildew as the powdery mildew pathogen carrier, standby;

[0018] (2) Preparation of the test variety group: Select 54 miniature rose varieties with a plant height of less than 50c...

Embodiment 2

[0022] (1) Preparation of powdery mildew pathogen carrier: choose w14, a miniature rose self-fertile variety w14 with a plant height below 50cm, suitable for planting in pots with a pot diameter of 10-15cm, and highly susceptible to powdery mildew, as the powdery mildew pathogen carrier for testing, and select healthy branches of w14 Carry out cutting seedlings, and transplant them into pots after 25 days of cuttings. The size of the pots is 12cm in diameter, with 4 plants per pot, and the substrate is peat. Afterwards, normal fertilizer and water management and prevention and control of diseases and insect pests will be performed once after 62 days of potting. Use fungicide again, allow powdery mildew to infect and develop, select the potted flower that is seriously infected with powdery mildew as the powdery mildew pathogen carrier, standby;

[0023] (2) Preparation of the test variety group: 57 miniature rose varieties with a plant height of less than 50cm, suitable for plan...

Embodiment 3

[0027] (1) Preparation of powdery mildew pathogen carrier: select the self-fertile miniature rose variety w14, which is less than 50cm in plant height, suitable for planting in pots with a pot diameter of 10-15cm, and is very susceptible to powdery mildew, as the powdery mildew pathogen carrier for testing, and select healthy branches of w14 Carry out cutting seedlings, and transplant them into pots after 30 days of cuttings. The size of the pots is 12cm in diameter, 4 plants per pot, and the substrate is peat. Afterwards, normal fertilizer and water management and prevention and control of diseases and insect pests will be performed once after 63 days of potting. Use bactericide again, allow powdery mildew to infect and develop, select the potted flower that is seriously infected with powdery mildew as the powdery mildew pathogen carrier, standby;

[0028] (2) Preparation of the test variety group: Select 55 miniature rose varieties with a plant height of less than 50cm, suita...

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Abstract

The invention discloses a method for determining powdery mildew resistance of miniature rosa chinensis. The method comprises the steps of (1) preparing powdery mildew pathogen carriers; (2) preparing test cultivar groups; (3) arranging test units; (4) evaluating the resistance. According to the method for determining the powdery mildew resistance of the miniature rosa chinensis, determination is conducted in a plastic greenhouse, the powdery mildew pathogen carriers are set, and artificial inoculation is not required; environmental conditions which are relatively stable and beneficial to development and progression of powdery mildew are built, so that the powdery mildew resistance of the miniature rosa chinensis can be shown fully, and the phenomenon that test results are influenced due to influence of differences of weather conditions and pathogen inoculation methods on powdery mildew infection degrees of the miniature rosa chinensis is avoided; relative susceptible indexes can reflect the powdery mildew resistance of the miniature rosa chinensis objectively, and man-made influence caused by a disease classification method when disease indexes are used for evaluating the disease resistance is avoided. The method for determining the powdery mildew resistance of the miniature rosa chinensis can satisfy inducing conditions of the powdery mildew fully, conforms to production reality, is simple and easy to implement and is high in practical application value in cultivation and breeding of the miniature rosa chinensis.

Description

technical field [0001] The invention relates to the field of plant resistance research, in particular to a method for measuring resistance to miniature rose powdery mildew. Background technique [0002] Miniature rose (Rosa chinensis minima) is a low-flowering shrub of the genus Rosa in the family Rosaceae. It is a type of modern rose. It has a small plant size, a variety of varieties, and gorgeous flowers. It is suitable for cultivation and ornamental in the form of small potted plants. Miniature potted roses are often used in major festival markets such as Mother's Day and Valentine's Day. They are good products for festival consumption and gifts for relatives and friends. Potted flower production has developed into an important flower industry abroad and is a typical high-efficiency facility agriculture. [0003] Powdery mildew is one of the most important diseases that harm miniature roses. It mainly harms the young branches, leaves and flower buds of miniature roses. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00
Inventor 汪有良
Owner JIANGSU ACAD OF FORESTRY
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