Method for Screening Drought-tolerant Brassica napus Varieties
A technology for Brassica napus and varieties, which is applied in horticultural methods, botanical equipment and methods, planting substrates, etc., can solve the problems of lack of drought-tolerant Brassica napus varieties, low accuracy, etc., and achieves short detection period, good plant growth, Yield and quality improvements
Active Publication Date: 2021-08-10
YUNCHENG UNIVERISTY
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Problems solved by technology
Although different researchers have done research work on the drought resistance of Brassica napus from various aspects, and conducted useful discussions to understand the drought resistance of Brassica napus, the existing drought-tolerant varieties of Brassica napus have shortcomings such as low accuracy and lack of a comprehensive Method for planting drought-tolerant Brassica napus varieties with easy control of cultivation environment, easy operation and high accuracy
Method used
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[0022] This example provides a method for screening drought-tolerant Brassica napus varieties. The entire screening process is carried out in an intelligent greenhouse. The relative humidity of the greenhouse air is maintained at 70%, and the temperature is 20°C to 20°C. The screening specifically includes steps:
[0023] Step S1 (sowing of Brassica oleracea): selecting plump, uniform, and disease-free Brassica napus seeds for disinfection, and then sowing them in a cultivation tank with a length of 100 cm, a width of 50 cm, and a depth of 30 cm, and planting on demand. Keep a reasonable distance between plants; cover 2cm with substrate after sowing;
[0024] When the Brassica napus seedlings grow to 2 true leaves, thin the seedlings, select healthy seedlings with consistent growth, and keep 30 Brassica napus seedlings in each cultivation tank on the basis of maintaining a reasonable plant spacing; wherein, the substrate is an organic ecological cultivation substrate Or soil s...
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The invention discloses a method for screening drought-tolerant rapeseed varieties, which comprises the steps of: selecting plump, uniform, and disease-free seeds of the rapeseed, sterilizing them, and then sowing them, covering them with substrates; The seedlings were divided into drought treatment group, control group 1 and control group 2; the drought treatment group was planted with organic ecological cultivation substrate, and the drought treatment was carried out when it grew to 4 leaves and 1 heart, and the relative humidity of the substrate was reduced to 30% stepwise, and maintained Drought; the control group 1 was planted with organic ecological cultivation substrate, and the relative humidity of the substrate was always maintained at 75%; the control group 2 was planted with soil substrate, and the relative humidity of the substrate was always maintained at 75%; the drought treatment group, control group 1 and Control the fresh weight of the underground part of each Brassica napus in the two groups; calculate the drought resistance value of each variety. The method has the advantages of low cost, high accuracy of drought resistance detection, short detection period, easy operation and easy popularization and implementation in various places.
Description
technical field [0001] The invention relates to the technical field of plant variety screening, in particular to a method for screening drought-tolerant Brassica napus varieties. Background technique [0002] Brassica napus, one of the three major types of rapeseed, originated in Europe, and is currently distributed more in northern European countries and in the southern prairie regions of western Canada. Introduced to China by North Korea, Japan and the United Kingdom in the 1930s, it has been widely distributed throughout China, especially in the main producing areas of rapeseed in the provinces along the Yangtze River Basin. In addition, Brassica napus plants have certain salt tolerance, and are important plant resources for the development and utilization of coastal tidal flats and inland saline-alkali lands in my country. However, because the germination and seedling stages of Brassica napus are sensitive to salt stress, seed germination is inhibited under medium and h...
Claims
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IPC IPC(8): A01G22/15A01G31/00A01G7/00A01G24/22A01G24/20A01G24/25A01G24/10A01G24/30
CPCA01G7/00A01G31/00A01G22/15A01G24/10A01G24/20A01G24/22A01G24/25A01G24/30
Inventor 杜磊
Owner YUNCHENG UNIVERISTY