Growth-promoting bacterial strain for promoting rooting of cutting tea seedlings and microbial seedling culturing substrate thereof

Abstract

The invention belongs to the technical field of tea cultivation and particularly relates to a growth-promoting bacterial strain for promoting the rooting of cutting tea seedlings and a microbial seedling culturing substrate thereof. The growth-promoting bacterial strain is bacterial strain WYS-2 belonging to Rhodosporidium toruloides and preserved in CGMCC (China General Microbiological Culture Collection Center) with the culture preservation number of CGMCC NO.13524 on January 3rd 2017. Above 1*108cfu/g of colony-forming unit of the bacterial strain WYS-2 is contained in the microbial seedling culturing substrate. Alumite and the tea root growth-promoting bacterial strain WYS-2 are firstly obtained and the microbial seedling culturing substrate is prepared later. By means of the microbial seedling culturing substrate, the rooting time of cutting tea seedlings is obviously shortened; the callus rate and the rooting percentage of the cutting tea seedlings are obviously increased; the tea seedling culturing period is shorter; and the seedling culturing efficiency is higher.

Description

technical field [0001] The invention belongs to the technical field of tea cultivation, and in particular relates to a growth-promoting bacterial strain for promoting rooting of cutting tea seedlings and a microbial seedling-raising substrate thereof. Background technique [0002] Tea tree is one of the main economic crops in my country. There are many varieties of tea trees. In order to maintain the characteristics and characteristics of fine varieties, most of them use short ear cuttings and other asexual propagation techniques for tea tree seedling cultivation. However, the above-mentioned asexual reproduction techniques generally have disadvantages such as long seedling raising period, low reproductive survival rate, and being easily restricted by natural conditions. The practical results show that it takes 70-90 days for spring and summer tea seedlings from March to August to root, and more than 90 days for autumn tea seedlings from October to November to root; the who...

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Problems solved by technology

However, the above-mentioned asexual reproduction techniques generally have disadvantages such as long seedling cycle, low reproductive survival rate, and easy to be restricted by natural conditions.

The practical results show that it takes 70-90 days for spring and summer tea seedlings from March to August to root, and more than 90 days for autumn tea seedlings from October to November to root; the whole seedling cultivation cycle reaches 16-90 days. 18 months, occupying land for a long time and resulting in high cultivation costs

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