陕西长青自然保护区扇脉杓兰物候期及花部形态观测OA

The Cypripedium japonicum is a national second-grade protected plant.From 2021 to 2023,biological characteristics such as phenological period,natural fruiting rate,and habitat,as well as floral morphology,were observed in the fan-veined alyssum populations in the three regions by means of field surveys and sentinel observations.The results showed that in the past it sprouted new buds in the first half of April each year,the scape was drawn out in mid-April when the flowers star-ted to bloom,and in the second half of the year it entered into full bloom,with a flowering period of 20-25 days,and the petals began to wither in the early of May,and at the same time the successful pollination of the flowers began to increase the size of the ovary,and the fruits ripened from Septem-ber to November,and the fruition rate was about 4.91 percent under natural conditions.This paper aims to provide a theoretical basis for the effective conservation of this species by observing its pheno-logical period,flower characteristics and fruiting,and to lay the necessary scientific foundation for the introduction,propagation and breeding of this species later in the region.