美国可食松硬枝扦插育苗试验  

Experiment on Pinus edulis Sapling Breeding by Hardwood Cutting

作　　者：韩刚[1] 韩恩贤[1] 

机构地区：[1]西北农林科技大学林科院,陕西杨凌712100

出　　处：《西南林学院学报》2007年第2期30-32,共3页Journal of Southwest Forestry College

基　　金：国家林业局"948"项目资助(2001-37)

摘　　要：用ABT生根粉1号和油菜素内酯处理美国可食松硬枝插穗进行育苗试验,结果表明:油菜素内酯0.2 mg/L浸泡插穗60 min生根率达到44.44%,ABT生根粉1号500 mg/L浸泡60min和200 mg/L浸泡120 min生根率分别为33.33%和26.67%.可食松硬枝扦插第1年主要是愈伤组织及根系形成,上部基本没有生长.根系形成主要是直径2 mm以下根.从根系干重、总长、总表面积、总体积来看,ABT生根粉1号500 mg/L浸泡60 min处理效果最佳.Experiments of Pinus edulis sapling breeding by hardwood cutting treated by rooting powder ABT No. 1 and Brassinolide were conducted. The results showed that the rooting rate of the hardwood cuttings soaked in 0.2 mg/L of brassinolide for 60 min was 44.44% , and the rooting rates were 33.33% and 26.67% individually by soaking the cuttings in 500 mg/L of rooting powder No. 1 for 60 min and in 200 mg/L of rooting powder No. 1 for 120 min. There was basically no growth of the above ground part in the first year after undertaking the cuttage by hardwood cuttings of Pinus edulis apart from the formation of callus and root system, which was mainly composed of fine roots with diameter under 2 mm. It was showed that the best results in the dry weight, total length, total surface area and total volume of root system were obtained by soaking the hardwood cuttings in 500 mg/L of rooting powder No. 1 for 60 min.

关 键 词：可食松 硬枝扦插 育苗 

分 类 号：S791.240.5[农业科学—林木遗传育种]