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Method for breaking dormancy of potato seed tubers

A potato and seed dressing technology, applied in botany equipment and methods, seed coating/seed dressing, seed and rhizome treatment, etc., can solve the two-time spraying treatment and the cumbersome operation of germination, and the economic loss of farmers in the second cropping area , Difficult to apply in production and other problems, to achieve the effect of preventing foreign bacteria, avoiding the spread of rotten seeds and germs, and reducing rot

Inactive Publication Date: 2012-12-05
刘勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]2, 4-D, Rindit (Landit), thiourea, etc. all have the effect of breaking tuber dormancy, but it is difficult to apply in production due to inconvenient operation
However, soaking and accelerating germination with gibberellin solution often causes tuber rot, and soaking may also cause pathogens to spread from infected potato pieces to healthy potato pieces, and often cause rotten seeds and disease occurrence
Especially for potatoes planted in autumn, germination and sowing coincide with high temperature and high humidity, and the rot is more serious, which brings huge economic losses to farmers in the second cropping area.
[0005] Second, Pang Wenjing published a method of spraying gibberellin solution to break the dormancy of seed potatoes in "Chinese Potato" Volume 18, No. 3 in 2004. But this method is only suitable for processing whole potatoes, and it needs two spraying treatments and the germination operation is more cumbersome

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Indoor Germination Effect Experiment of Breaking Dormancy Method

[0016] The tested variety is the main potato variety "Rice Flower Potato" in the local mountainous area. The seed dressing agent for breaking dormancy is: 1 kg of talcum powder + 20 ml of 60 mg / L gibberellin solution + 25 g of 72% gram wettable powder. According to the dicing method of the present invention, the seed potatoes harvested for 10 days are cut into pieces, and then the seeds are dressed with a seed dressing agent, and 200 seed potatoes are processed and cut into pieces, and the treated seed potatoes are cut into pieces and buried in seedlings with wet vermiculite. In the tray, place it at 25-30°C to accelerate germination, and sprinkle water in time to keep the surface of the vermiculite moist. After 7 days of germination, open the vermiculite to observe the germination of the potato pieces. The germination rate is 91%, and the bud length is 0.4-1.1cm. After 10 days of germination, the potato...

Embodiment 2

[0018] Autumn potato planting application test

[0019] The planting variety is "Zao Dabai", and the normal dormancy period is 60 days. After the harvest on July 17, the autumn sowing was done on August 16, and the dormancy had not yet been completed when the seeds were sown. Cut into pieces according to the method described in the present invention, seed dressing, air-dried and sow, use seed dressing agent as: every kilogram of talcum powder+40 mg / liter gibberellin solution 20 milliliters+58% metalaxyl manganese zinc wettable powder 30 grams +72% agricultural streptomycin sulfate soluble powder 5 grams. The control treatment was set up in the experiment: the seed potatoes were cut into pieces by the rotary cutting method commonly used by local farmers, soaked in 0.5 mg / L gibberellin solution for 10 minutes, air-dried and sowed. The test treatment began to emerge 12 days after sowing, and the emergence rate reached 79.6% 22 days after sowing, and 40 days after sowing, the se...

Embodiment 3

[0021] Applied Experiment of Potato Autumn Propagation

[0022] The breeding varieties are medium-ripening potato variety "Jizhangshu No. 3" and purple potato variety "Heimeiren". After the original seed was harvested on July 15, the first-class species was sown in autumn on August 14. Cut into pieces according to the method of the present invention, dress the seeds, and sow after air-drying. The seed dressing agent used is: every kilogram of talcum powder+50 mg / liter gibberellin solution 20 milliliters+72% gram dew wettable powder 25 grams. Jizhangshu 3 began to emerge 15 days after sowing, and the emergence rate was 86.0% 30 days after sowing; Heimeiren began to emerge 13 days after sowing, and the emergence rate was 83.5% 30 days after sowing.

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Abstract

The invention discloses a method for breaking the dormancy of potato seed tubers. The method mainly comprises the steps that after the potato seed tubers are diced according to a specific method, a seed dressing agent for breaking the dormancy of the seed tubers, which is prepared by adding a certain amount of gibberellins and fungicides to talcum powder, is used to dress seeds; and after being dried in air, the seed tubers can be sown. The method for processing and breaking the dormancy of the potato seed tubers by using non-liquid reagents is simple and effective; and by using the method, the dormancy can be effectively broken, the seedling emergence time can be shortened, the seedling emergence rate and the seedling emergence uniformity can be increased, and the problems of seed decay and pathogen transmission caused by seeds soaked in liquid reagents or atomization can be solved. The processing method is simple, is convenient to operate, and is time and labor saving.

Description

technical field [0001] The invention relates to a cutting method for breaking dormancy of potato seed potatoes. Background technique [0002] In potato production, tubers are used as planting materials, and after potato tubers are harvested in vitro, it takes a period of dormancy to germinate. The degree of dormancy affects the morning and evening of field emergence, emergence rate, uniformity of emergence, growth vigor and yield formation. Autumn potato planting in the second-season cropping area needs to break dormancy and sowing with seed potatoes harvested in spring that have not yet completed dormancy; seed potatoes transported from the north for winter-sown potatoes in the south often do not completely pass dormancy when sowing, and the emergence time after sowing is longer; During the seed potato propagation process, it is often necessary to break the dormancy of the harvested tubers and sow them in time to realize multi-season planting throughout the year, so as to ...

Claims

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Application Information

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IPC IPC(8): A01C1/00A01C1/06A01N25/14A01N25/12A01N43/12A01N47/34A01N47/44A01P21/00
Inventor 刘勇郝兴顺王胜宝李文辉
Owner 刘勇
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