Germination accelerating method for Carya illinoensis (Wangenn.) K. Koch seeds

Abstract

Belonging to the technical field of plant seedling raising, the invention discloses a germination accelerating method for Carya illinoensis (Wangenn.) K. Koch seeds. The method mainly comprises: conducting surface sterilization on the seeds with 5000 times of potassium permanganate; and immersing the seeds in150ppm of GA3 for 5d to break seed dormancy; then using an electrothermal wire for heating, and controlling a germination bed at a temperature of 30DEG C for germination accelerating under constant temperature. The air humidity is maintained at 70%-80% during the germination accelerating period, and the water content of the germination bed matrix accounts for 80% of the maximum water-holding capacity of soil. After one week, 10% of the seeds germinate. After two weeks, 70% of the seeds germinate, and after three weeks, 90% of the seeds germinate. The invention aims to provide a constant-temperature germination accelerating technology for Carya illinoensis (Wangenn.) K. Koch seeds. Especially under the condition of a low ground temperature during early spring, application of the technology can make Carya illinoensis (Wangenn.) K. Koch seedling raising two months earlier than conventional open field seedling raising, thus greatly shortening the seedling raising cycle and reducing the seedling raising cost. At the same time, the emergence rate and the uniformity are improved, and the seedling quality is also guaranteed.

Description

[0001] technical field [0002] The invention relates to a method for accelerating germination of pecan seeds, belonging to the technical field of plant seedling cultivation. Background technique [0003] Shelled Pecans [ Carya illinoensis (Wangenn.) K. Koch], also known as long hickory, is a deciduous tree of the Juglandaceae Hickory genus. Especially under the background of my country's vigorous development of woody oil tree species, it has more economic value and development potential, and the domestic and international markets have broad prospects. [0004] my country has introduced pecans with thin shells since the end of the nineteenth century, but most of them are scattered and scattered, and large-scale planting has not been realized. In recent years, with people's continuous understanding of its planting potential, there has been an upsurge of scale development, and the demand for seedlings has increased sharply. And thin-shell hickory is still propagating ro...

AI Technical Summary

Problems solved by technology

It is characterized by the release of seeds from natural low-temperature dormancy, little dependence on facilities, low cost, and space-saving, but it has high requirements on temperature, humidity, ventilation and other conditions, and it takes a long time for germination, numerous procedures, complicated operations, and controllable poor sex

The latter is based on different concentrations of GA 3 The technology of replacing low temperature to break seed dormancy and thereby promoting seed germination has the characteristics of simple operation and good effect. However, due to the lack of clear understanding of the germination conditions after the dormancy is released, and the different seedling conditions in various nurseries, the actual production of seeds The phenomenon of low germination rate and irregular emergence abounds, which seriously hinders the process of intensive and high-quality seedling cultivation of thin-shell hickory