Method for improving proportion of male flowers to female flowers of jatropha curcas

Abstract

The invention discloses a method for improving the proportion of male flowers to female flowers of jatropha curcas, and belongs to the technical field of plant growth regulators. The method comprises the following steps of: selecting a chemical reagent, namely alpha-naphthylacetic acid (NAA) solution; preparing the NAA solution into 20 to 100 mg / L solution; selecting a plant with flowering and fruit-bearing capacity and the tree-age of over 2 years; spraying the NAA solution on the overall branch of the plant in a flower bud period of the first crop of flowers of the jatropha curcas; and managing and protecting after spraying. The method solves the problem of low proportion of the male flowers to the female flowers of the jatropha curcas, can improve the proportion of the male flowers to the female flowers of the jatropha curcas by 17.30 to 52.66 percent, and improve the yield per plant by 12 to 44 percent.

Description

technical field [0001] The invention belongs to the field of plant cultivation, and in particular relates to a method for increasing the ratio of male and female flowers of Jatropha curcas. Background technique [0002] Jatropha curcas (Jatropha curcas L1), also known as small tung tree, yellow swollen tree, bright tung tree, tung oil tree, Nanyang tung tree (Japan), etc., is a plant of the genus Jatropha in the Euphorbiaceae (Euphorbiaceae). The plant can be used as medicine, with astringent taste, slightly cold, and poisonous, and the stem and leaf extract of tung tree is also used to prevent and control diseases and insect pests [3] . In folk, it is often used for detumescence, analgesia, hemostasis, disinfection, insecticide, antipruritic, elimination of warts, vomiting and diarrhea, anesthesia, diuresis, promotion of wound healing and termination of pregnancy. In my country, the medicinal cultivation of tung tree has a history of about 300 years. At the same time, th...

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Problems solved by technology

There are many studies on improving the seed yield of Jatropha curcas, but the current research on the high-yield characteristics of Jatropha curcas has few research results at home and abroad. The ratio of male and female flowers of Jatropha curcas can be increased to achieve high yield by induction of hormones such as a-naphthalene acetic acid Effect is even more rare, 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", is the effect that ethephon and gibberellin play simultaneously, but, it improves the male and female of Jatropha curcas. The proportion of flowers is not ideal

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