A kind of method for sexual reproduction of Emei pseudoparthenosexual magnolia

Abstract

The invention discloses a sexual propagation method of parakmeria omeiensis. The sexual propagation method of parakmeria omeiensis includes the following steps that (1) pollen is collected for hand pollination; (2) seeds are collected and processed; (2) seeds are planted. By means of the technology, the maturing rate can reach 95 percent while the maturing rate under the natural condition is only 12 percent. The germination rate of the seeds stored in sand can reach 80 percent while the germination rate of the seeds stored through a common method instead of in sand is less than 15 percent, and the germination rate of the seeds under the natural condition is as low as 2 percent. The sexual propagation method of parakmeria omeiensis realizes massive propagation of the precious parakmeria omeiensis on the edge of extinction, and has great significance in studying the extinction mechanism of the parakmeria omeiensis and searching for effective protection and rescue measures.

Description

Technical field [0001] The invention relates to the field of agriculture and forestry planting, in particular to a method for sexual reproduction of Emei pseudo parthenocarpy. Background technique [0002] Emei pseudo-partosexual magnolia (Parakmeria omeiensis Cheng) is an evergreen of the Magnoliaceae (Magnoliaceae) pseudo-partosexual magnolia (Parakmeria) arbor , Up to 25 meters, is a model species of the genus Pseudo-unisexual Magnolia, a species endemic to Sichuan, a rare and endangered plant under national first-level protection, and a very small population of wild plants that the country urgently needs to save and protect. The wild is only distributed in the Biandanyan area of ​​Mount Emei at an altitude of 2,200 meters. Due to the fragile living environment, especially in the natural environment disturbed by humans and monkeys, the damage is even greater. Currently, only more than 50 plants have been found in the wild. Emei pseudopartosexual magnolia is a dioecious, cross...

AI Technical Summary

Problems solved by technology

The first flowering of female flowers is concentrated between 6:00-8:00 in the evening. Under natural conditions, pollination is difficult, the seed setting rate is low, and the quality of the seeds is poor. The seeds are difficult to germinate and grow under natural conditions, and almost lose the ability of self-reproduction.