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Application of plant hormones in promoting growth rate, calcification and photosynthesis of large calcified algae

A plant hormone and growth rate technology, applied in the direction of plant growth regulators, plant growth regulators, applications, etc., can solve problems such as differences between species, and achieve the effects of easy purchase, reduced floor space, and low price

Active Publication Date: 2019-12-13
SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that plant hormones have regulatory effects on some algae, and there are obvious interspecies differences

Method used

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  • Application of plant hormones in promoting growth rate, calcification and photosynthesis of large calcified algae
  • Application of plant hormones in promoting growth rate, calcification and photosynthesis of large calcified algae
  • Application of plant hormones in promoting growth rate, calcification and photosynthesis of large calcified algae

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Experimental program
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Effect test

Embodiment 1

[0029] 1. Sample collection and holding

[0030] The large-scale calcified seaweed Halimeda opuntia was selected as the experimental material. The algae were collected from the Xisha coral reef area at a depth of 4-14m. The aerated culture was transported to the laboratory circulating water culture tank for 2 weeks. Temporary culture conditions Salinity 33-34ppt, water temperature 26-28℃, pH 8.1-8.3, light-dark cycle 12L:12D, light intensity 150μmol photons m - 2 the s -1 , during the temporary cultivation period, the growth of cactus algae was in good condition, and there was no obvious albino phenomenon.

[0031] 2. Case Design

[0032]At the beginning of the experiment, select cactus algae in good condition, remove the attached sediment and miscellaneous algae with filtered seawater, place them in a 30L acrylic cultivation tank with 25L seawater, and add different types and concentrations of exogenous plants respectively Hormones (indoleacetic acid (IAA), naphthaleneace...

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Abstract

The invention discloses application of plant hormones in promoting growth rate, calcification and photosynthesis of large calcified algae. By studying the influence of IAA, NAA, GA and 6-BA on the growth of the large calcified algae under different concentration conditions, the characteristic is defined that the four plant hormones play a promoting role under low concentration and play an inhibiting role under high concentration, and the promotion effects of the IAA and the NAA are obviously higher than those of the GA and the 6-BA. The provided cultivation method of adding the exogenous planthormones has an obvious effect of improving the growth of the large calcified algae. Compared with traditional culture, the provided method is simple and fast, and has low cost, and the cultured large calcified algae can be directly applied to the ecological remediation of damaged coral reefs, and has wide application in restoring and maintaining the diversity and stability of a coral reef ecological system.

Description

Technical field: [0001] The invention belongs to the field of biotechnology, and specifically relates to the application of plant hormones in promoting the growth rate, calcification and photosynthesis of large calcified algae. Background technique: [0002] Calcifying macroalgae (Calcifying macroalgae), as an important class of calcifying organisms in coral reef ecosystems, is widely distributed. There are 234 species and varieties of macroalgae recorded in my country. They have an extremely important ecological position in the coral reef ecosystem. They can not only improve high primary productivity, participate in and stabilize coral reefs, but some large calcified algae can also provide a good substrate for marine invertebrate larvae to attach and metamorphose. However, in recent decades, under the dual influence of global climate change and human activities, coral reef ecosystems around the world have been seriously degraded, and the biomass and diversity of large calci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G33/00A01G7/06A01N43/38A01N37/10A01N45/00A01N43/12A01N43/90A01P21/00
CPCA01G7/06A01G33/00A01N37/10A01N43/12A01N43/38A01N43/90A01N45/00Y02A10/26Y02A40/80
Inventor 龙丽娟杨芳芳韦章良
Owner SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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