Method of rapid seedling growing of true seeds of sweet potatoes

A fast seed-seeding technology, applied in the fields of seed and rhizome treatment, botany equipment and methods, planting substrate, etc., can solve the problems of less treatment and reporting, and achieve the effects of reducing mechanical damage, high emergence rate, and short emergence time

Active Publication Date: 2015-10-14
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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  • Method of rapid seedling growing of true seeds of sweet potatoes

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Combination of 20 different parents and offspring of the spare sweet potato seeds in the refrigerator in this implementation, a total of 32000 seeds, packed in seed bags, immersed in 500ml concentrated sulfuric acid in a 2L large beaker, about 10000 grains at a time, and put out the seed bags after 30min. Rinse with clean water, dry slightly, sow in the nutrient bowl substrate in this implementation, 1 seed per hole, lightly press 1mm, cover with vermiculite and scrape it flat, water thoroughly, cover with plastic film, and keep the temperature in the greenhouse at 25-40°C for 3 days Remove the mulch, spray to maintain humidity, and the seed coat will fall off naturally. The daily management is spraying and watering once in the morning, paying attention to shading at noon, the cotyledons are fully expanded on the 4th day, the true leaves are drawn out in 2 weeks, the plant height is 20cm in 40 days, 10-12 true leaves, and the cut seedlings are cut into the field. The st...

Embodiment 2

[0020] Compare the germination rate with the peeling method of the spare sweet potato seeds in the refrigerator and the artificial shearing method in this implementation. The plump seeds of the offspring of Xushu 27 were selected. One group was cut with nail scissors to break the seed coat, and the other group was treated with concentrated sulfuric acid for 30 minutes and then washed with water. Each 100 capsules, 3 repetitions. Sow seeds according to this method, and count the germination rate after 3 days. The germination rates of the two groups were 86% and 98%, respectively. Manually cut the seed coat, and if one skilled worker handles 1,000 seeds without stopping for 8 hours, it will take 10 skilled workers 3-4 days to complete the annual sowing of 30,000-40,000 seeds. Seed soaking in concentrated sulfuric acid only needs one worker and can be completed in half a day. Manually cutting and engraving the seed coat is not only time-consuming and labor-intensive, but also ...

Embodiment 3

[0022] The seedling raising method of the sweet potato seed in this implementation is compared with the germination raising seedling rate. Select the plump seeds of Xushu 27 descendants, and after breaking the skin, put one group in a biochemical incubator at 28 degrees, soak for 1 hour, filter out the water, cover with wet gauze to keep it moist overnight, and sow with dew white seeds. A set of seeds is directly sown. Each 100 capsules, 3 repetitions. Sow seeds according to this method, and count the seedling rate after 3 days. The seedling rates of the two groups were 1% and 97%, respectively. After germination, the respiration of the seeds is strengthened, and the requirements for humidity and temperature control are high, and the tolerance of high humidity is reduced, and it is very easy to rot the roots and die the seedlings. For seeds that have not been germinated, the plastic film will be removed immediately after emergence in 3 days, so that they will not be affecte...

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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 simple and efficient rapid seedling cultivation of sweet potato seeds. 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 position. At present, the perennial 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 of breeding new varieties of sweet potato. The sweet potato seed obt...

Claims

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Application Information

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Patent Type & Authority Applications(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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