光化学反射指数在比较葡萄叶片耐霜冻能力中的应用
发布时间：2019-05-26 20:30
【摘要】：以12个葡萄(Vitis vinifera)品种为试材,在秋季采集叶片,进行霜冻处理,测定了霜冻过程中叶片光化学反射指数(PRI)的变化。提取有效参数,采用隶属函数法比较了不同叶片的耐霜冻能力。结果表明,随着温度的降低,叶片光化学反射指数呈下降趋势。在 8 0°C范围内,PRI及其相对值Rt与温度都存在显著的线性关系;叶片PRI在0°C、 8°C时的相对值R0、R 8,以及 8 0°C范围中,Rt与温度的回归直线斜率SLP都具有品种特异性,可以反映不同品种的耐霜冻能力。隶属函数法结合聚类分析结果显示,在12个候选品种中,抗霜冻能力最好的是Cabernet Sauvignon,其R0、R 8和SLP分别为72.3%、50.19%和2.78。
[Abstract]:Using 12 grape (Vitis vinifera) varieties as test materials, the leaves were collected in autumn and treated with frost. The changes of photochemical reflection index (PRI) of leaves during frost were measured. The effective parameters were extracted and the frost resistance of different leaves was compared by membership function method. The results showed that the photochemical reflection index of leaves decreased with the decrease of temperature. In the range of 鈮，
本文编号：2485611
[Abstract]:Using 12 grape (Vitis vinifera) varieties as test materials, the leaves were collected in autumn and treated with frost. The changes of photochemical reflection index (PRI) of leaves during frost were measured. The effective parameters were extracted and the frost resistance of different leaves was compared by membership function method. The results showed that the photochemical reflection index of leaves decreased with the decrease of temperature. In the range of 鈮，
本文编号：2485611
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