Breeding method for bolting-resisting radish germplasm in Shangdong region

A technology of resistance to bolting and radish seeds is applied in the directions of horticultural methods, planting substrates, botanical equipment and methods, etc. Diseases and rot, etc., to ensure the controllability of the environment, shorten the time for slowing the seedlings, and ensure the survival rate.

Active Publication Date: 2016-12-14
VEGETABLE RES INST OF SHANDONG ACADEMY OF AGRI SCI
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

If effective measures are not taken, some extremely bolting-resistant radish germplasm resources will be lost
[0005] The common problems in the germplasm breeding of Shandong extremely resistant to bolting are: prolonging the vernalization time of sprouts will easily cause rot in the bud stage and fail to survive; too long vegetative growth time will cause the plants to be susceptible to disease and rot in the late reproductive growth period, and seeds cannot be harvested; extremely resistant to bolting The characteristics lead to high temperature during the flowering period, severe yellowing of the flower buds, and the seeds cannot be harvested; the extremely resistant bolting characteristics cause the late pod to coincide with the rainy season, and the seeds are prone to immature rot, etc., and the seeds cannot be harvested
However, this method is not suitable for the breeding of extremely bolting-resistant radish germplasm. This is because the above-mentioned requirements for cutting side branches are relatively harsh. If it is applied to the breeding of extremely bolting-resistant radish germplasm, there are still many problems to be solved.

Method used

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  • Breeding method for bolting-resisting radish germplasm in Shangdong region
  • Breeding method for bolting-resisting radish germplasm in Shangdong region
  • Breeding method for bolting-resisting radish germplasm in Shangdong region

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 (the radish variety selected in this embodiment is extremely resistant to bolting material: No. 14 Tianzheng radish)

[0044] (1) vernalization treatment

[0045]On October 10th of the first year, wash the seeds twice with pure water, soak them in 200-300 times of dacryline for 10 seconds, and then wash them once with pure water. Put the filter paper in the petri dish, put the radish seeds in it, add water to the petri dish to control the 1 / 3-1 / 4 of the seed height, accelerate the germination at 25°C for 32 hours, seal the petri dish with a sealing film, and store it at 2-4°C Vernalization in refrigerator for 25 days. Moisture management is required during the vernalization period, specifically: open the culture dish every 7 days to replenish water and then seal it with parafilm. When sealing for the first time, add water to the petri dish to control 1 / 4-1 / 5 of the height of the seeds; from the second to the last time of sealing, add water to the petri di...

Embodiment 2

[0065] Embodiment 2: (the radish variety that this embodiment selects is extremely resistant to bolting material: late ㄆ G)

[0066] In step (1) of this embodiment, vernalization was performed in a refrigerator at 2-4°C for 28 days, germination was accelerated at 25°C for 38 hours, and the rest were the same as in Example 1.

[0067] Present embodiment step (4) April 29 next year, when the main branch height of seed strain is 36cm, topping is carried out. On May 17, cuttings were carried out when more than 90% of the first-level side branches of the seed plants reached more than 6cm. All the other are with embodiment 1. The breeding results are shown in Table 1.

Embodiment 3

[0068] Embodiment 3: (the radish variety selected in this embodiment is extremely resistant to bolting material: Xuejianchun)

[0069] In the step (1) of this embodiment, the vernalization treatment was performed in a refrigerator at 2-4°C for 28 days, and germination was accelerated for 42 hours at 25°C, and the rest were the same as in Example 1.

[0070] Present embodiment step (4) next year on April 19th, when the main branch height of seed strain is 36cm, carry out topping. On May 8, cuttings were carried out when more than 90% of the primary side branches of the seed plants reached more than 6cm. All the other are with embodiment 1. The breeding results are shown in Table 1.

[0071] Table 1 Propagation of extremely bolting-resistant materials

[0072]

[0073] As can be seen from Table 1: the cutting survival rate of the present invention is ≥94.0%, the average number of pods of side branches is ≥38.8, and the quality of the seeds is good, and the germination rate...

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Abstract

The invention discloses a breeding method for bolting-resisting radish germplasm in the Shangdong region. The method includes the steps that 1, the vernalization time of seed reproduction of bolting-resisting radish germplasm is adjusted to be November of the previous year to meet the requirement for light intensity and light length of bolting-resisting radish; 2, seeds are repeatedly washed with sterile water and fast soaked with a Daktarin agent, water management in the vernalization stage is carried out, and therefore the problem that buds and seedlings rot due to overlong vernalization time is solved; 3, white sphagna peat and bagasse are used as matrixes, lateral branch cortex is promoted to take root directly, the seedling recovering time is shortened, and it is ensured that seeds are smoothly harvested; 4, cuttage is carried out indoors on all levels of radish lateral branches with the length of 6 cm or more in the later period for seed reproduction, regulation and control over environment and the number of the lateral branches are ensured, reproductive growth of the bolting-resisting radish germplasm is completed smoothly by adjusting and accurately controlling temperature, light illumination, light length, water and fertilizer. Plants in the method are high in survival rate, seed quality is high, and genetic performance is stable.

Description

technical field [0001] The invention belongs to the technical field of plant breeding, and in particular relates to a breeding method of extremely bolting-resistant radish germplasm in Shandong area. Background technique [0002] Radish is an important vegetable crop in my country. In recent years, spring radish has a good momentum of development, the market price is high, and the cultivated area has increased steadily. However, there are still many limiting factors in the production of spring radish in my country, the most prominent of which is early bolting, which has a major impact on the yield and quality of radish, and is a bottleneck problem that limits radish production and annual supply. Screening bolting-resistant radish germplasm and cultivating suitable bolting-resistant varieties can solve the major losses caused by early bolting to radish production and supply. [0003] As far as radish is concerned, it is required that new varieties have a greater improvement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G31/00A01G7/04A01C1/00A01C1/08A01H1/02
CPCA01C1/00A01C1/08A01G7/045A01G24/00A01G31/00A01H1/02Y02P60/14
Inventor 王淑芬徐文玲刘贤娴刘辰赵稳孙杨李晓龙李巧云张志刚赵智中
Owner VEGETABLE RES INST OF SHANDONG ACADEMY OF AGRI SCI
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