摘要
分析了外源激素种类及浓度、母树树龄、插穗粗度及长度、制穗方法对吉贝扦插生根的影响。结果表明:外源激素能提高吉贝插穗生根率、生根数量和质量,生根率可达70%以上,平均生根数大于3根,根系长度长于10.14 cm,150 mg/L ABT1生根粉处理生根指数最高为122.87;1 a生树插穗生根率最高,为86.67%,较10 a生树高出45.61%,且生根指数依次为5 a、10 a生树的1.71倍和4.24倍,相关系数为-0.997,呈显著负相关;插穗长度以20-30 cm最佳,生根率达69.1%,插穗粗度以1.5-2.5 cm最佳,最高生根率可达83.46%;不同枝段相比,生根率以中段插条最高,但差异不显著。不同切口处理生根率差异不显著,带叶片不利于插穗生根。
The effects of hormone type and concentration,tree age,cutting diameter and length,built spike method on cutting rooting of Ceiba pentandra were analyzed. The results were as followsⅠ. The exogenous hormones could promote rooting rate,root numbers and quality of Ceiba pentandra cuttings. The rooting rate,root numbers and rooting index were more than 70%,10. 14 cm and 122. 87 respectively with 150 mg /L ABT1 treatment. Ⅱ. 1- year- old trees got the highest rooting rate of 86. 67%,which was 45. 61% higher than that of 10- year- old trees. In addition,the rooting indexes were 1. 71 times and 4. 24 times of those of 5- year-old trees and 10- year- old trees. There was significantly negative correlation( correlation coefficient:- 0.997) between tree ages and rooting rate. Ⅲ. The optimal length of cuttings was 20 to 30 cm which got the rooting rate of 69. 1%. Besides the optimal diameter of cuttings was 1. 5 to 2. 5 cm,which got 83. 46% rooting rate. Ⅳ. Cuttings from middle branches had a higher rooting rate than those from other parts. However there wasn't significant difference not only among the cuttings from different parts but among different cut treatments. Cuttings with leaves were not conducive to rooting.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2014年第4期816-822,共7页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然基金项目(31260175)
江西省科学院科研开发专项基金(2012-YQC-06)
江西省科学院协同创新专项研究经费(2013-XTPH-06)
江西省科学院产学研合作资金项目(2013-09)
关键词
吉贝
外源激素
插穗质量
生根率
Ceiba pentandra
exogenous hormone
cutting quality
rooting rate