A wheat heat resistance identification method

A technology of heat resistance and wheat, which is applied in the direction of botanical equipment and methods, measuring devices, instruments, etc., can solve the problem of inability to accurately reflect the heat resistance of varieties, the large inter-annual differences of heat-resistant varieties, and the research results of heat resistance Instability and other problems, to achieve accurate and reliable identification results, ensure food safety, and easy measurement

Active Publication Date: 2017-03-22
CROP RES INST SHANDONG ACAD OF AGRI SCI
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Problems solved by technology

[0004] Existing studies on heat resistance mostly focus on building plastic sheds in fields to conduct heat resistance tests. However, heat resistance studies in a single field are often affected by factors such as climate, environment, and wheat growth cycle, and the results of heat resistance studies are often inconsistent. Stable, the identified heat-resistant varieties vary greatly between years and different regions, and cannot accurately reflect the heat tolerance of varieties
The present invention combines the temperature-controllable heat resistance identification in the intelligent greenhouse with the heat resistance identification in the field temperature-increasing shed, and further improves the heat resistance of wheat varieties through the mutual confirmation of the heat resistance identification results of the intelligent greenhouse and field varieties. The accuracy of the heat resistance identification, the heat resistance identification method, has not been reported at home and abroad

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  • A wheat heat resistance identification method
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  • A wheat heat resistance identification method

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Experimental program
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Effect test

Embodiment 1

[0028] Example 1 2013-2014 heat tolerance identification of wheat in intelligent greenhouse

[0029] It was carried out in a smart greenhouse built by the Crop Research Institute of Shandong Academy of Agricultural Sciences. On November 18, 2013, the wheat varieties were vernalized at low temperature. After 40 days of vernalization, 20 pots were sown for each wheat variety, and 4 plants were planted in each pot. Set the day and night temperature and day and night length as 20 / 16°C and 16 / 8h for growth. During the flowering period, the flowering ear of the main stem will be marked and listed on the same day. At the same time, the growth temperature and the length of day and night after flowering are adjusted to 25 / 16°C and 16 / 8h. Ten days after flowering, 10 pots of materials for each variety were moved to a greenhouse unit with the growth temperature and day and night length set at 33 / 20°C and 16 / 8h for high temperature treatment until they matured.

[0030] The test resul...

Embodiment 2

[0035] Example 2 2013-2014 heat tolerance identification of wheat in field warming shed

[0036] The experiment was carried out in the experimental farm of Crop Research Institute of Shandong Academy of Agricultural Sciences in 2013-2014. Each variety is planted in plots, and 6 rows are planted in each plot, and the row length is 2 meters. A two-factor split-plot design was adopted, and the different varieties in the block were arranged completely randomly. 10 days after flowering, build a warming shed in the high-temperature treatment planting area ( figure 1 ) for heat-resistant treatment. It can be seen from the heat sensitivity index that the wheat varieties (lines) with thousand-grain weight and heat sensitivity index S<1 during the filling period are Jimai 35, Jimai 20, Jimai 27 and Luyuan 502, respectively (Table 3).

[0037] Table 3 Determination of heat resistance index and heat sensitivity index of wheat varieties in field warming shed in 2013-2014

[0038]

Embodiment 3

[0039] Example 3 2014-2015 intelligent greenhouse heat resistance appraisal

[0040] It was carried out in the smart greenhouse of the Crop Research Institute of Shandong Academy of Agricultural Sciences. Firstly, the test materials were vernalized at low temperature in a vernalization chamber, and then planted in pots. The diurnal temperature before flowering was set at 20 / 16°C; after flowering, the diurnal temperature was set at three heat stress temperatures of 35 / 20°C, 37 / 20°C and 39 / 20°C, and the high temperature stress was treated until the wheat grains matured.

[0041] It can be seen from Table 4 that there are extremely significant differences in the grain weight per panicle, grain weight per plant, thousand-grain weight and grain filling duration of different temperature treatments between the control and different treatments. The basic trend of the three high-temperature treatment results is that the higher the temperature, the less material accumulation, the lower...

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Abstract

A wheat heat resistance identification method is provided. The method includes identifying heat resistance in an intelligent greenhouse, identifying heat resistance in a greenhouse built in land for growing field crops, recording heat resistance identification indexes, calculating a thermal inductance index, determining variety heat resistance, determining a stable heat resistant variety, and other steps. Identification results of the method are accurate and reliable. According to the method, heat resistance identification in the intelligent greenhouse and heat resistance identification in the greenhouse built in land for growing field crops are combined, and interannual heat resistance identification results and heat resistance identification results of different ecoregions are compared and combined, and therefore the method is of great significance for heat resistance identification of wheat genetic resources and breeding parents, for screening of proper heat resistant wheat varieties suitable for plantation in Huanghuaihai zones and for grain safety in China. The identification indexes are easy to measure, and through mutual corroboration of indoor identification and land identification, heat resistance of a wheat variety can be truly reflected.

Description

technical field [0001] The invention relates to studying the physiological and biochemical process of wheat heat resistance by using measurement indexes such as heat sensitivity index, and in particular relates to a method for identifying heat resistance of wheat. Background technique [0002] Wheat is an important food crop in my country, which is cool-loving. During the growing season, especially the grain filling period, which has an important relationship with yield, it is easily affected by heat stress caused by abnormally high temperature weather, resulting in a decrease in yield and quality. In wheat producing areas such as the Huanghuaihai region and Xinjiang, dry and hot winds often appear during the wheat grain filling period, and the temperature sometimes reaches above 32°C, resulting in a 10-20% reduction in wheat production. High temperature hazards often occur in winter wheat areas in northern my country and the middle and lower reaches of the Yangtze River, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00A01G1/00
CPCA01G22/00G01N33/0098
Inventor 隋新霞黄承彦楚秀生樊庆琦崔德周方宝停王成雨曹彩云
Owner CROP RES INST SHANDONG ACAD OF AGRI SCI
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