广西林业科学2018，Vol.47Issue(1)：52-57,6.
不同基质与激素组合对云南松穗条扦插生根的影响
Effects of Different Substrates and Hormones on Rooting of Pinus yunnanensis Cuttings
摘要
Abstract
Taking 1-year-old top shoots which were from 2-year-old Pinus yunnanensis seedlings served as cuttings,the experiments of different mixed solutions of IBA and IAA were implemented to treat the cuttings in three substrates by L9(34)orthogonal design. These experiments included total 11 treatment combinations (two control groups).Results showed that rooting rates of 7 treatments were from 5.6% to 40.0%,except for 4 treatments without rooting;the numbers of the first-order to third-order lateral roots(LRs)were from 1.8 to 2.4,5.6 to 16.4 and 0.4 to 5.0,respectively.The basal diameter(BD)and length of the first-order lateral roots were from 0.57 to 2.14 mm and 13.6 to 18.5 cm,respectively;the lengths of the second-order and third-order lateral roots were from 3.2 to 5.0 and 2.0 to 3.1 cm,respectively.Differences of 6 root parameters were significant(P<0.05)or extremely significant(P<0.01),except for the numbers of first-order lateral roots and the length of the third-order lateral roots.1 pine bark and 2 mycorhizal soil would facilitate the root-ing percents,root development and growth.The cuttings with 0.35 g/L of IAA solution had significant effects on improving root development(P<0.05),while 0.16 g/L IBA solution had extremely significant effects on promoting the development and growth of first-order lateral roots(P< 0.01). In this experiment,A2B3C1 (The substrate was 1 pine dark and 2 mycorhizal soil and a mixed hormone solution was 0.5 g/LIAA and 0.16 g/L IBA.)was the best combination,and rooting rate reached 40.0%.关键词
云南松/扦插/外源激素/基质Key words
Pinus yunnanensis/cutting/exogenous hormone/substrate分类
农业科技引用本文复制引用
杨文君,李莲芳,吴俊多,吴思明,凌莉芳,徐婷婷,沈松..不同基质与激素组合对云南松穗条扦插生根的影响[J].广西林业科学,2018,47(1):52-57,6.基金项目
国家级林业科学技术推广项目([2015]26号) （[2015]26号）
国家自然科学基金项目(31170585) （31170585）
