A method for rapid seedling cultivation of sweet potato seeds

A seed seed, fast technology, applied in the direction of seed and rhizome treatment, botanical equipment and method, planting substrate, etc., can solve the problem of less treatment reports, and achieve the effects of reducing mechanical damage, short emergence time, and high emergence rate.

Active Publication Date: 2017-09-15
JIANGSU XUZHOU SWEET POTATO RES CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few reports on the treatment of sweet potato seed sowing

Method used

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  • A method for rapid seedling cultivation of sweet potato seeds

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Combine the 20 different parent offsprings of sweet potato seeds used in the refrigerator in this implementation, a total of 32,000 seeds, packed in a seed bag, immersed in a 2L large beaker in 500ml concentrated sulfuric acid, about 10,000 at a time, 30 minutes later, the seed bag Rinse with clean water, dry slightly, and sown in the nutrient bowl substrate in this implementation, 1 hole 1 seed, lightly press 1mm, cover with vermiculite and flatten, pour in water, cover with mulch, and keep the greenhouse temperature at 25-40℃ for 3 days Remove the mulch and use spray to maintain humidity, and the seed coat will fall off naturally. Daily management is sprinkling and watering once in the morning. Pay attention to shade at noon. On the 4th day, the cotyledons are fully expanded, the true leaves are extracted in 2 weeks, the plant height is 20cm in 40 days, the true leaves are 10-12 pieces, and the seedlings are cut into the field. The statistical seedling rate is 69%-96%,...

Embodiment 2

[0020] The method of breaking the skin of the spare sweet potato seeds in the refrigerator in this implementation is compared with the method of artificial cutting and breaking the germination rate. The full seedlings of Xushu 27 progeny were selected, one group was cut through the seed coat with nail scissors, and the other group was treated with concentrated sulfuric acid for 30 minutes and then washed with water. 100 capsules each, 3 repeats. Sow according to this method, and count the bud rate after 3 days. The germination rates of the two groups were 86% and 98% respectively. It takes 10 skilled workers 3-4 days to cut the seed coats manually, and calculate with a skilled worker processing 1000 seeds without stopping work for 8 hours, and calculate with the annual sowing amount of 30,000-40,000 seeds. Seed soaking in concentrated sulfuric acid only needs 1 worker and can be completed in half a day. Manual cutting of the seed coat not only takes time and labor, but also ...

Embodiment 3

[0022] The seedling rate of the sweet potato seedling raising method in this implementation is compared with that of accelerating germination. The full seedlings of Xushu 27 progeny were selected. After the peeling treatment, one group was soaked in a biochemical incubator at 28°C for 1 hour, filtered off the water, covered with wet gauze and kept overnight, and sown with white seeds. A group of seeds are sown directly. 100 capsules each, 3 repeats. Sow seeds according to this method, and count the seedling rate after 3 days. The seedling rates of the two components were 1% and 97%, respectively. After germination, the respiration of seeds is strengthened, and the requirements for humidity and temperature control are high, and the tolerance of high humidity is reduced, and the roots and seedlings are very easy to rot. If the seeds are not germinated, the mulch film will be removed immediately after 3 days of emergence, which is not affected by high temperature and humidity. ...

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Abstract

The invention provides a method of rapid seedling growing of true seeds of sweet potatoes. The true seeds are processed for 30 minutes by concentrated sulfuric acid, rinsed by clean water, directly sown in a base material, then covered by a mulching film for 3 days so that all seedlings can sprout, and then irrigated in a micro-jet manner so that seed coats can shed naturally. The micro-jet watering is performed in daily management so as to control the temperature and the humidity. According to the invention, seedling growing procedures are saved; large labor is reduced; and emergence time of the seedlings of sweet potatoes is increased. In addition, via the combination of the mulching film and the micro-jet irrigation, a problem of manual removing of seed coats after the true seedlings of sweet potatoes sprout is solved, labor is saved and percentage of seedling emergency of the true seedlings of sweet potatoes is greatly increased. Tests and statistics show that the average generation rate of the true seedlings of hybridized combination of sweet potatoes is more than 85%, survival rate of seedlings is more than 90% and requirements on planting, inserting and breeding of new varieties of the true seedlings of sweet potatoes can be completely satisfied.

Description

Technical field [0001] The invention relates to the technical field of crop breeding, in particular to the field of rapid seedling breeding of simple and efficient sweet potato seedlings. Background technique [0002] Sweet potato (Ipomoea batatas (L.) Lam.) is an important food, feed, industrial raw material and new energy crop in the world. It is widely cultivated in tropical, subtropical and temperate regions such as Asia, Africa and Latin America. Sweet potato ranks seventh in the world's food production. In my country's grain production, it ranks fourth after rice, wheat and corn, and has important economic value and strategic status. At present, the annual planting area of ​​sweet potato in my country is 5-6×10 6 hm 2 , Accounting for about 50% of the world's total area, and the annual total output accounts for more than 80% of the world's total output. [0003] Hybrid breeding is the main way for the selection of new sweet potato varieties. The sweet potato seed obtained b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01G9/10A01C1/00
CPCA01C1/00A01G22/00A01G24/00
Inventor 王欣李强张允刚马代夫郑元林刘亚菊闫会张瑞英刘霞
Owner JIANGSU XUZHOU SWEET POTATO RES CENT
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