Novel application of auxin IAA

Abstract

The invention discloses novel application of an auxin IAA. In the novel application, the auxin IAA is used for regulating jatropha curcas flower organ sex ratio and enhancing the proportion of male and female flowers of jatropha curcas, particularly, under a certain condition, the spraying concentration of the auxin IAA influences the sex ratio of the male and the female flowers, and a spraying concentration range of the auxin IAA is 20-100mg/L, wherein certain condition is that a plant age is above 2 years, and a spraying method comprises the steps of spraying the whole jatropha curcas plant in a first harvest flower bud stage, wherein drops are fine and uniform in the spraying process, the quantity is limited to that a sprayed part is wet with micro drops flowing down, the spraying time is from two thirty to four thirty at afternoon at a sunny day; and spraying again if raining within 36h after spraying, wherein the optimal spraying concentration of the auxin IAA is 60mg/L. The invention can ensure that the proportion of the male flowers to the female flowers of the jatropha curcas is increased by 14.56-35.89 percent and the yield per plant is enhanced by 9-69 percent.

Description

technical field [0001] The invention belongs to the application field of plant growth regulators, and in particular relates to a new application of auxin IAA. Background technique [0002] Jatropha curcas, also known as green paulownia, false peanut, stinky tung tree, is a shrub of Euphorbiaceae, 3-4 meters high, mostly medicinal cultivated plants. It is used as medicine with bark, leaves and fruit (including residue cake after oil pressing). Jatropha curcas seeds have the effects of clearing away heat and detoxifying, reducing swelling and dissipating silt. Jatropha curcas is a light-loving plant with a strong and well-developed root system. It is a drought-resistant and barren oil crop. The branches, trunks, and roots are close to fleshy, with soft tissues, hemp-containing water, and a lot of juice. It is toxic and not easy to burn. It has high economic value. The oil content of Jatropha curcas seeds can be as high as about 60%, the calorific value of Jatropha curcas see...

AI Technical Summary

Problems solved by technology

There are a lot of researches on improving the seed yield of Jatropha curcas. As Chinese Patent Publication No. CN101292607A discloses "a kind of chemical reagent is to the regulating and controlling method of Jatropha curcas flower organ sex ratio", it is the effect that ethephon and gibberellin play simultaneously, but, it Improving the ratio of male and female flowers of Jatropha curcas is not very ideal

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