Cultivate Strong Seedlings And Improve The Stress Resistance of Peanuts
隐藏域元素占位
Cultivate Strong Seedlings And Improve The Stress Resistance of Peanuts
Application of regulators to cultivate robust seedlings and improve peanut resistance to adverse conditions
Naphthylethyl Indoleacetic acid
The use of 10-16mg/L 50% naphthalene ethyl indole acetic acid liquid before sowing can improve the germination rate, promote the growth of the root system at the seedling stage, and improve the root vigor.
Brassinolide
Brassinolide can improve the cold resistance of peanut seedlings. Spring peanuts in southern China are often affected by the cold spring, resulting in a shortage of seedlings. In Nanning, Guangxi Zhuang Autonomous Region, peanut seeds were soaked with 0.01-0.1 mg/L brassinolide liquid for 24 hours to promote germination and increase the content of amino acids, soluble sugar and chlorophyll. Brassinolide solution treatment at 4℃ could slow down the degradation of chlorophyll and reduce the accumulation of MDA, which is the product of membrane lipid oxidation, indicating that the treatment with brassinolide can improve the resistance of seedlings to low temperature. When the temperature rose (18-20 ℃) for 5 days, most of the control group wilted, while the growth was normal in the Brassica lactone treatment.
Chlorhexidine
Peanuts at the 3-leaf stage were treated with 75-300 mg/L chameleon liquid, and then subjected to drought treatment. Experiments showed that chlormethalin could increase the content of endogenous abscisic acid in peanut seedlings during drought stress period, and the treatment with 150 mg/L liquid was the most significant. In addition, it can also improve the activity of protective enzymes (such as superoxide dismutase) that protect against oxygen free radical damage in plants, so that cell membranes are less damaged by drought. Therefore, the leaf water content was higher, which indicated that the chlorophyll treatment could improve the drought resistance of peanut seedlings to a certain extent.
Paclobutrazol
Dress the seeds with 50-100mg/L paclobutrazol liquid, the dosage is based on the degree of soaking the seeds, and after planting for 1 hour, dry and plant them in the field; or spray 100-150mg/L paclobutrazol liquid on peanut plants with 5-6 leaves , can regulate the growth and development of peanut seedling stage. The specific performance is to promote the shortening of internodes at the base of the stem, the reduction of plant height, the increase of branches, the development of root system, and the enhancement of root vitality; the volume of water storage cells in leaves increases, the transpiration rate decreases, and the water content of leaves increases, which can improve the drought resistance of peanuts.
Triazolone
Triadimefon has growth retardant activity, which can delay crop growth, reduce leaf area, increase leaf thickness, and improve stress resistance. At the 4-leaf stage of peanut, spraying peanut plants with 300mg/L triadimefon liquid can adjust the growth of seedlings and make them have certain drought resistance.
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