Method for improving fruit yield of jatropha curcas through transsexual adjustment of male and female flowers

Abstract

The invention discloses a method for improving the fruit yield of jatropha curcas through the transsexual regulation of male and female flowers, which comprises the following steps of: selecting jatropha curcas plants which survive after the planting, have the ability of flowering and bearing fruit, and have the bearing age of more than one year; performing local wound cleaning, disinfection and sterilization treatments on shaded sides of base parts of trunks and branches of the jatropha curcas; and applying a male and female flower regulator containing exogenous plant hormone preparation to the base parts of the treated trunks and branches, wherein the exogenous plant hormone preparation comprises the following components in parts by weight: 1-50 parts of S-abscisic acid, 1-20 parts of cyclodextrin, 1-20 parts of ethephon, 1-50 parts of cytokinin and 1-50 parts of D-isoascorbic acid. When the method is adopted, the formation of female flowers of the jatropha curcas can be improved through directed induction, and the total number of flowers and the ratio of female flowers to male flowers are obviously increased; therefore the yield of a single plant of the jatropha curcas can be improved by 3-5 times.

Description

technical field [0001] The invention relates to a method for regulating the sex ratio of flower organs of growing trees, in particular to a method for improving the yield of Jatropha Jatropha fruit by adjusting the sexual transformation of male and female flowers. Background technique [0002] Jatropha curcas is recognized and preferred by the international energy industry as a renewable energy plant. The oil extracted from its seeds can be easily processed into biodiesel, which can be widely used in various power machinery and diesel locomotives. 3 tons of Jatropha seeds can produce 1 ton of biodiesel, which is a highly competitive and strategically developed new bio-energy variety in the international market. [0003] In several provinces in Southwest my country (Yun, Guizhou, Sichuan, Guangdong, Guangxi and Hainan), the cultivation and plantation of jatropha has reached a considerable scale, whether it is original natural forest or artificial plantation forest. PetroChina...

AI Technical Summary

Problems solved by technology

But in practice, when these methods are applied on a large scale in Jatropha jatropha forests, the effect is not ideal, especially in Jatropha jatropha forests with high tree types (3-5m), because point-to-point spraying of flower buds is difficult and labor-intensive and time-consuming. Too high, and Jatropha jatropha is a perennial flowering and fruiting plant that bears fruit many times in multiple flowering periods a year. It is too difficult to repeat the application of pesticides. At the same time, the medication is also restricted by the climate and environment. A method with application value that can significantly increase Jatropha fruit yield