Research method of flower and fruit retaining effects of ilex verticillata by different growth regulators

Abstract

The invention discloses a research method of flower and fruit retaining effects of ilex verticillata by different growth regulators. A flower and fruit retaining test is carried out on the ilex verticillata by adopting the different growth regulators to treat through setting treatment, determination and data analysis, and a conclusion that the net photosynthetic rate of the ilex verticillata is different along the treatment of the different growth regulators is obtained; 0.5% KH2PO3 and 0.1% urea are sprayed on the ilex verticillata at a bud stage, 25mg / l GA3 and 0.3% borax or 20-50mg / l 6-BA are sprayed at a full-bloom stage, and 25mg / l GA3 and / or 2mg / L CPUU are / is sprayed at a fruit mature period, so that a single-plant fruiting number of the ilex verticillata can be remarkably improved; the ilex verticillata is treated by GA3 and 6-BA or CPPU combined spraying, gas exchange parameters including the photosynthetic rate, the stomatal conductance, the moisture utilization rate and the like of the ilex verticillata, and chlorophyll fluorescence characters including PSII effective photochemical quantum yield, photochemical quenching, PSII actual photochemical quantum yield, electron transfer rate and the like can be improved; and the fruit retaining rate of the ilex verticillata is effectively improved, and theoretical evidences are provided for researching the growth regulators of the ilex verticillata.

Description

【Technical Field】 [0001] The invention relates to the technical field of the preservation of flowers and fruits of North American holly, in particular to a research method for the effect of different growth regulators on the preservation of flowers and fruits of North American holly. 【Background technique】 [0002] North American holly (Ilexverticillata) is a perennial deciduous shrub of the Ilex family Ilex, native to the northeastern United States. It grows mostly in swamps, wet shrub areas and ponds. Unlike most evergreen trees in the Holly family, it is characterized by deciduous leaves in winter. In Europe, North America, holly is widely cultivated and used as cutting branches, viewing fruits and landscaping. The domestic imports of North American holly cut branches from the Netherlands and other countries every year are put on the flower market, and the sales price is expensive. Since my country introduced North American holly ornamental varieties in 2006, my country has ...

AI Technical Summary

Problems solved by technology

There have been no reports on the effects of growth regulators on the photosynthesis of Ilex North America, especially on the chlorophyll fluorescence kinetics of Ilex North America. Therefore, it is necessary to propose a study on the effect of different growth regulators on the flower and fruit preservation of Ilex North America method, starting with photosynthetic pigment content, photosynthetic parameters and chlorophyll fluorescence dynamics characteristics, and discussing the effects of different growth regulators on the photosynthesis and chlorophyll fluorescence characteristics of North American holly from different levels, aiming to reveal the relationship between different growth regulators and photosynthesis and In order to provide theoretical basis and reference indicators for the efficient cultivation of North American holly

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