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Method for increasing flowering and setting efficiency of potato

A technology of flowering and fruiting potatoes, applied in the field of potato breeding, can solve the problems of different growth periods of different varieties, early-maturing varieties do not form flower buds, mid-late-maturing varieties do not bloom, etc., to achieve a large number of flowering, good prevention of fruit disease and mildew, flowering period long effect

Inactive Publication Date: 2017-02-22
绵阳市农业科学研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for improving the efficiency of flowering and fruiting of potatoes, aiming at solving the problems in current potato breeding that early-maturing varieties in low-altitude areas in the south do not form flower buds, mid-late-maturing varieties do not bloom, drop buds, or do not bear fruit or form seeds after hybridization , it is impossible to carry out cross-breeding; breeding in high-altitude cool areas has inconvenience in planting and management of materials, long distances, and high costs; different varieties have different growth periods, so there are also differences in flowering time, and how to make the parents of the combination meet the same flowering period, etc. question

Method used

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  • Method for increasing flowering and setting efficiency of potato
  • Method for increasing flowering and setting efficiency of potato
  • Method for increasing flowering and setting efficiency of potato

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 growth regulator promotes flower bud differentiation and prolongs flowering period

[0047] Among them, 28 materials were tested, and each material had 12 pots. Of the 21 materials treated with growth regulators, only 2 were not flowered, and the flowering induction efficiency was 86.36%. There were 11 materials with lush flowering (more than 15 flowers or more than 30 flower buds per plant in a day). Taking water as a control, only 4 of the 7 materials bloomed, and the flowering efficiency was 57.14%, and the number of flowers was small, and there was no flowering and luxuriant type. It shows that hormone treatment can not only significantly increase the probability of flowering, but also promote the differentiation of flower buds. As shown in Table 1, the growth regulator treatment also has the following characteristics: shorten the time required from budding to flowering, that is, promote early flowering; form more inflorescences to prolong the flowerin...

Embodiment 2

[0051] Embodiment 2 Nitrogen treatment promotes lush plant growth

[0052] After the application of nitrogen fertilizer, the plants grew luxuriantly, and many materials showed a height of more than 1.5m, with many and strong branches. Even genetically dwarfed material grows many branches. Vigorous plant growth and strong photosynthesis can provide sufficient nutrient supply for flowering and fruiting, which lays the foundation for obtaining a large number of seeds.

Embodiment 3

[0053] Example 3 Supplementing Humidity Before Pollination Increases Fruit Set Rate and Seed Number

[0054] In the experiment, pollination was divided into four batches in early, middle, late and late May, and 130 combinations were randomly prepared, and seeds were finally harvested from 100 combinations. The corresponding fruit and seed conditions are shown in Table 2. Due to the genetic differences of different parents, the fruit setting rate and the number of seeds produced are different among the combinations. The highest fruit setting rate can reach 100%, and the lowest is 0, while the highest number of seeds in a single fruit is 189 in this test. grains / piece, the minimum is 3 grains / piece. At the same time, the fruit setting rate is also greatly affected by the temperature and humidity during pollination.

[0055] The temperature and humidity recorder during the first batch of pollination showed that the ambient temperature was about 20°C and the humidity was 90%, wh...

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Abstract

The invention discloses a method for increasing flowering and setting efficiency of potato, comprising: selecting virus-free seed potatoes, and soaking mid-late ripening material with gibberellin in early January; planting each whole seed potato in a single pot, and filling each pot with matrix that is from fine soil, vermiculite and coconut coir at a ratio of 7:1:2; setting up a plant-fixing frame, fixing three rods around each pot, and twining with nylon cords; treating nitrogen fertilizer and a growth regulator, to be specific, applying nitrogen fertilizer to each pot upon seedling emergence, watering for leaching, and after supplement of the nitrogen fertilizer, spraying the plant growth regulator; increasing humidity before pollination, collecting pollen, and burying pistil stigmas in pollen piles for pollination; after pollination, spraying naphthylacetic acid and carbendazim mixed liquid to inflorescences; pruning weeds to 50 cm and below in mid-May. The method allows crossbreeding to be carried out in southern low-altitude areas; flowering phase is adjustable, such that chances for making up specific crosses are increased; setting efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of potato breeding, and in particular relates to a method for improving the flowering and fruiting efficiency of potatoes in low-altitude areas in the south. Background technique [0002] Hybrid breeding is a common method of potato breeding. The key to obtaining good materials is to make a reasonable hybrid combination, and the flowering and seed setting efficiency of potato materials is one of the important factors that determine whether the hybrid can be successful. Most potato cultivars belong to the long-day type, which requires sufficient light and long-term conditions to promote flower bud differentiation, especially for early-maturing varieties with a small number of flowers. Potatoes can be planted in multiple seasons in Southwest my country, but only potatoes planted in spring can grow in the long-day season and meet the photoperiod conditions necessary for potato flowering and fruiting. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01G7/06A01G9/12A01C1/00A01H1/02A01N47/18A01N37/10A01N47/36A01N43/12A01N43/22A01P21/00
CPCA01C1/00A01G7/06A01G9/124A01H1/02A01N37/10A01N43/12A01N43/22A01N47/18A01N47/36A01G22/00A01N2300/00
Inventor 邹雪丁凡余金龙陈年伟刘丽芳余韩开宗
Owner 绵阳市农业科学研究院
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