蓝肖琼


摘要 香蕉种苗繁育的组培方法主要是传统固体培养基培养,其劳动量大,增殖系数不高,自动化与机械化程度低,生产效益提升空间有限。本文利用气压式间歇浸没液体培养、固体静置培养、液体静置培养3种不同的培养方式组培研究香蕉种苗,探究在增殖率方面具有积极作用的香蕉组培技术。实验结果:(1)液体间歇浸没培养的香蕉无菌苗增殖率为3.55,是传统固体培养的1.12倍,是液体培养的1.73倍;(2)在液体间歇浸没培养香蕉无菌苗试验中,培养效果最好的间歇浸没频率为10 min/2 h;(3)液体间歇性浸没组培的苗长势好,生根较少,叶茎粗壮,分蘖多,优于传统组培方式。
关键词 香蕉;组织培养;间歇浸没液体培养
中图分类号:S668 文献标识码:B 文章编号:2095–3305(2021)08–0146–02
Study on the Application of Intermittent Immersion Culture Technology in Banana Breeding
LAN Xiao-qiong (Luzhai Meteorological Bureau, Liuzhou, Guangxi 545600)
Abstract The tissue culture method used in banana seedling breeding is mainly traditional solid medium culture, which has a large amount of labor, low proliferation coefficient, low degree of automation and mechanization, and limited space for improvement of production efficiency. In this study, three different culture methods were used to study the tissue culture of banana seedlings, namely, intermittent submerged liquid culture, solid standing culture and liquid standing culture, to explore the positive role of banana tissue culture technology in the proliferation rate. The experimental results are as follows: (1) The proliferation rate of sterile banana seedlings in liquid intermittent immersion culture was 3.55, 1.12 times of that in traditional solid culture and 1.73 times of that in liquid culture; (2) In the experiment of liquid intermittent immersion culture of sterile banana seedlings, the frequency of intermittent immersion with the best culture effect was 10 min/2 h; (3) Liquid intermittent immersion tissue culture method of tissue culture seedlings grow better, less rooting, thick leaves and stems, more tillers, better than the traditional tissue culture method.
Key words Banana; Tssue culture; Inter-mittent immersion liquid culture
我國香蕉产业发展迅猛,但在发展过程中也存在一些问题,如大规模生产效率低下、栽培品种较为单一难以满足市场需求、品种老化以及病虫害流行等问题[1]。本文深入研究液体间歇培养技术,旨在为香蕉的大规模生产无菌组培苗探索新途径。
1 材料与方法
1.1 材料
采用新鲜无病害的桂蕉1号香蕉基部以上20~50 cm处的顶端芽作为外植体材料。
1.2 设计
设置5种不同的香蕉组织培养方式:间歇浸没液培(A、B、C分别设置浸没时间为10 min/6 h、10 min/4 h、10 min/2 h)、液态培养基静置培养(D)、固体培养基培养静置培养(E),每种方式进行3次重复实验,每个培养器接种15~25个芽,5种培养处理温度均为28℃,光照强度在1 200 lx,光照时间为12 h。
1.3 方法
将采集的植物材料洗净后切成适当大小,对香蕉外植体用相同方式进行灭菌消毒,再适当进行切割,将切割好的材料分别放在设计的5种培养器中。……