Evaluation method for heat resistance of flowering cabbages

An evaluation method and heat resistance technology, applied in thermal analysis of materials, measuring devices, instruments, etc., can solve problems such as yield and quality decline, plant growth retardation, high temperature resistance, etc., to achieve low cost, little impact from environmental factors, short cycle effect

Pending Publication Date: 2021-09-07
海南省农业科学院蔬菜研究所
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Problems solved by technology

Cabbage loves temperature but is not resistant to high temperatures. The suitable temperature for growth is 15-25°C. When the temperature is above 30°C, the growth of the plant will be hindered, resulting in a decrease in yield and quality, or even death.

Method used

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  • Evaluation method for heat resistance of flowering cabbages
  • Evaluation method for heat resistance of flowering cabbages
  • Evaluation method for heat resistance of flowering cabbages

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Experimental program
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Embodiment

[0038] See Table 1 for the seed source of the Chinese cabbage strain described in this embodiment,

[0039] Table 1 Seed sources of Chinese cabbage lines

[0040]

[0041] All the inbred line materials in Table 1 were formed by the haploid material obtained from the free microspore culture of Chinese cabbage after chromosome doubling, the genotype was homozygous and the genetic traits were stable.

[0042] Step 1, determine the optimal stress germination temperature of Chinese cabbage, the specific process is as follows:

[0043] The optimal stress germination temperature screening was carried out with known heat-resistant lines CX3-2, CX1-5, heat-labile lines CX1-8, CX4-1, and moderate heat-resistant lines CX1-2, CX2-6 as experimental objects;

[0044] First, 100 high-quality seeds were selected for each line, soaked in deionized water for 2 h, put into a petri dish covered with filter paper, covered with the petri dish, and placed in 25 ℃ / 18 ℃ (day / night), 35 ℃ / The hig...

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Abstract

The invention discloses an evaluation method for heat resistance of flowering cabbages, and relates to the technical field of evaluation of heat resistance of vegetables. The method comprises the following steps: determining the optimal high-temperature stress germination temperature of flowering cabbages, and screening the optimal high-temperature stress germination temperature through the following indexes: relative germination rate, relative germination potential, relative germination index and relative vitality index; obtaining heat resistance evaluation index values of the flowering cabbages at the optimal high-temperature stress germination temperature, wherein the heat resistance evaluation index values comprise the relative germination rate, the relative germination potential, the relative germination index, the relative vitality index, the relative bud length, the relative bud thickness, the relative bud fresh weight, the relative bud dry weight, the relative root length, the relative root thickness, the relative root fresh weight and the relative root dry weight of bud seedlings; and calculating a grading evaluation value, a comprehensive grading value D and a grading coefficient GC of each flowering cabbage strain through the heat resistance evaluation index values. The method has the advantages of short identification period, high efficiency, low cost and the like, and is suitable for large-scale flowering cabbage strain evaluation and screening.

Description

technical field [0001] The invention relates to the technical field of heat resistance evaluation of vegetables, in particular to a method for evaluating heat resistance of Chinese cabbage. Background technique [0002] Caixin, a herbaceous plant of the genus Brassica in the family Brassicaceae, is selected and domesticated from Chinese cabbage subspecies and varieties of Chinese cabbage subspecies. It uses flower sprouts as its main edible organ, so it is also called cabbage sprouts. Native to southern my country, it is one of the specialty vegetables in South China. Cabbage loves temperature but is not resistant to high temperatures. The suitable temperature for its growth is 15-25°C. When the temperature is above 30°C, the growth of the plants will be hindered, resulting in a decrease in yield and quality, or even death. Hainan Island is located in the northern edge of the tropics. The field temperature in summer can reach above 35°C every year, and the temperature diffe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/15G01N25/00
CPCA01G22/15G01N25/00
Inventor 庞强强孙晓东周曼张文陈贻诵
Owner 海南省农业科学院蔬菜研究所
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