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国内外就怎样鉴定春小麦品种抗旱性,研究了许多方法。现将用蔗糖溶液测定小麦种子发芽率,间接测定小麦抗旱性的方法和我们的初步工作简介如下: 一、鉴定方法与材料 1.方法:用蔗糖溶液测定小麦种子发芽率的方法:在渗透压为16个大气压时,蔗糖液浓度为17.6％,温度为20—21℃,每个培养皿中放50粒种子,加蔗糖液50毫升,重复3—4次,进行发芽,经5—6天,计算蘸糖液中种子的发芽率。根据发芽率多少,确定抗旱性能的高低。分级标准为普通春小麦高抗发芽率为70％以上,中抗为20—
How to identify the drought resistance of spring wheat varieties at home and abroad, many methods have been studied. Now the method of determining the germination rate of wheat seeds with sucrose solution and indirectly measuring the drought resistance of wheat and our preliminary work are as follows: I. Methods and Materials for Identification 1. Method: The method of measuring the germination rate of wheat seeds with sucrose solution: At 16 atmospheres, the concentration of sucrose was 17.6%, the temperature was 20-21 ° C, 50 seeds were placed in each dish, 50 ml of sucrose solution was added and repeated 3-4 times for germination. After 5-6 days , Calculate the rate of germination in the sugar solution. According to the germination rate, determine the level of drought resistance. Grading standards for ordinary spring wheat high germination rate of 70% or more, the resistance is 20-