Grafting breeding method of paeonia delavayi

Abstract

The invention provides a grafting breeding method of paeonia delavayi, and belongs to the technical field of grafting. The method comprises the steps of rootstock cultivation, rootstock preparation, scion preparation, grafting, sand bed preparation, sand storage, sand storage management, transplanting and post-transplant management; wherein the rootstock is selected from peony roots in a 3-5 yearold growing period or roots of paeonia ostii seedlings in a 2-3 year old growing period, the root length of the selected rootstock is 20cm-25cm, and the root diameter is 1.6cm-2cm; the scion is selected from paeonia delavayi branches growing in the same year, the length of the scion is 5cm-12cm, the diameter of the scion is 1.6cm-2cm, and the scion is required to have 2-3 disease-pest-free full buds; when sand storage is conducted, the grafted seedlings are bundled in bundles of 10 plants, and erected on the sand bed, and the periphery of each bundle of the grafted seedlings is filled with river sand to completely bury the grafted seedlings. The operation is simple, the breeding efficiency is high, the grafting cycle is short, the transplanting survival rate is high, the growth is strong,and the grafting costs are low.

Description

technical field [0001] The present invention relates to the technical field of grafting, in particular to a method for grafting and breeding Yunnan peony. Background technique [0002] Dian peony belongs to Paeoniaceae Paeoniaceae Paeoniae genus peony group plant, is a rare and endangered species unique to my country, and is listed as a national third-level protected plant. It is mainly distributed from central to northwest Yunnan, namely southwestern Sichuan, northwestern Yunnan and southeastern Tibet. It is a peony group with the southernmost distribution of Paeoniae. The flower color of Yunnan peony is gorgeous, and it has the rare yellow flower gene resources among the cultivated varieties of Yunnan peony. In addition, its root bark also has important medicinal value. It is cold in nature and sour in taste. The central nervous system has the functions of dilating coronary blood vessels, lowering blood pressure, inhibiting bacteria, anti-inflammation, and anti-coagulatio...

AI Technical Summary

Problems solved by technology

However, the existing Yunnan peony grafting technology has problems such as long grafting period, low survival rate, slow growth and high grafting cost.