绣球花扦插水培研究

Non-wood Forest Research（2021）

Cited 0|Views33

Abstract

[目的]为探讨水培条件对绣球花外植体生根的影响,丰富和发展绣球花的繁育技术.[方法]以当年生的绣球花枝条为材料,通过测定平均生根率、平均每株根长、平均生根时间、平均每株生根数等指标系统研究了激素种类、激素浓度和插条部位对绣球花水培生根的影响.[结果]在水培条件下,绣球花插条15 d左右开始生根.无菌水和NAA处理的插条的平均每株生根数量和平均每株根长优于IBA处理的插条.低NAA浓度可以促进插条生根,但差异不显著,但当NAA浓度超过15 mg·L-1时,浸水部分的外植体表皮颜色明显变红,插条的平均每株生根数量和平均每株根长显著下降.插条类型对生根率、生根数量和根长具有显著影响,低浓度时(0和5 mg·L-1),插条的平均生根率由高到低排序为上段插条>中段插条>下段插条,插条的平均生根率高达98.0％以上;当浓度为10 mg·L-1时,中段插条的平均生根率和平均每株根长都显著高于上段和下段插条,适当提高激素浓度可以显著提高木质化插条的平均生根率.对比绣球花插条的生根部位发现,绣球花水培的生根方式为皮生根,上段插条浸入溶液中的部分均可以生根,而中段和下段插条的生根部位主要集中在节间附近,可能是由于上段插条木质化程度低,插条的分生组织活跃,而中段和下段插条木质化程度高,节间周围的分生组织活跃.[结论]激素种类、激素浓度和插条类型对绣球花水培苗的繁育具有显著影响,低浓度可以促进插条生根,但高浓度具有抑制作用.以中段插条为材料,在NAA浓度为10 mg·L-1条件下,插条不但生根率高,而且根系发达,可以繁育出高质量的绣球花水培苗.

求助PDF

上传PDF

View via Publisher

Bibtex

AI Read Science

AI Summary

AI Summary is the key point extracted automatically understanding the full text of the paper, including the background, methods, results, conclusions, icons and other key content, so that you can get the outline of the paper at a glance.

Example

Background

Key content

Introduction

Methods

Results

Related work

Fund

Key content

Pretraining has recently greatly promoted the development of natural language processing (NLP)We show that M6 outperforms the baselines in multimodal downstream tasks, and the large M6 with 10 parameters can reach a better performanceWe propose a method called M6 that is able to process information of multiple modalities and perform both single-modal and cross-modal understanding and generationThe model is scaled to large model with 10 billion parameters with sophisticated deployment, and the 10 -parameter M6-large is the largest pretrained model in ChineseExperimental results show that our proposed M6 outperforms the baseline in a number of downstream tasks concerning both single modality and multiple modalities We will continue the pretraining of extremely large models by increasing data to explore the limit of its performance

Upload PDF to Generate Summary

Must-Reading Tree

Example

Generate MRT to find the research sequence of this paper

绣球花扦插水培研究