A breeding method for cultivating a cold-resistant plant

A plant and cold resistance technology, which is applied in the field of cold-resistant plant breeding, can solve the problems of low temperature damage and loss, achieve the effect of shortening the cultivation time and expanding the scope of planting adaptation

Active Publication Date: 2015-07-08
HEBEI ACAD OF FORESTRY SCI
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Problems solved by technology

Whether in the north or in the south, they often suffer from dif

Method used

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  • A breeding method for cultivating a cold-resistant plant
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[0014] Below is a specific embodiment of the inventive method in practice, and its process is as follows:

[0015] Taking Hebei elm as an example, select good-quality elm seeds (Umqian), consult the literature and combine practical experience to determine that the coldest temperature of Hebei elm is -48°C. Afterwards, the low-temperature acclimation and warming treatment were carried out. First, the elm seeds (Yulum chinensis) were stored in a freezer at -48°C for 7 days. Then 80% of the elm money was taken out and stored at -53°C. Then store 70% of Yuqian in the freezer at -53°C, and store at -58°C. After 20 days of storage, each was warmed up at a temperature 10°C higher than the initial storage temperature (respectively: -38°C, -43°C, -48°C), and kept at this temperature for 10 days. Then return to the respective initial temperatures and store until the sowing period. When sowing, the seeds are normally germinated or soaked to grow into seedlings, from which more cold-res...

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Abstract

The invention relates to a breeding method for cultivating a cold-resistant plant. The method includes following steps: (1) selecting excellent full seeds and determining the range of the cold resistance of the selected plant; (2) performing low-temperature storage of the seeds, acclimatizing and getting warm again after a cold spell during acclimatization; (3) during sowing, normally accelerating germination or sowing after soaking of the seeds, allowing the seed to grow into seedlings, removing dead seedlings in real time, and selecting varieties more resistant to cold; and (4) for a colder area having higher requirements on cold resistance of the seeds, subjecting seeds of plants after low-temperature acclimatization in the step (3) to processes of the step (2) and the step (3) until a variety resistant to the temperature of the area is cultivated. The method is capable of completing screening of a cold-resistant variety in short time, increasing the breeding efficiency, broadening a suitable planting range of seedlings and increasing economic benefit.

Description

Technical field [0001] The invention involves a breeding method of a cold -resistant plant. Background technique [0002] Cold resistance of plants refers to the characteristics that plants can generally resist the low temperature effect below zero.Plant cold resistance includes anti -cold and freezing resistance.Plants adapt to the low temperature above the freezing point and are called anti -cold.Plants adapt to low temperature below the freezing point.Whether in the north or in the south, it often suffers from low temperature damage to varying degrees, bringing serious losses.The existing survey results show that the degree of freezing damage in different varieties is very different, indicating that the selection of breeding and promoting strong cold resistance is one of the most effective ways to avoid or reduce freezing damage. Invention content [0003] The purpose of the present invention is to provide a breeding method to cultivate cold -resistant plants.This method can ...

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Application Information

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IPC IPC(8): A01H1/04
Inventor 黄印冉贾宗锴李义红闫淑芳徐振华戴丽刘易超
Owner HEBEI ACAD OF FORESTRY SCI
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