|Table of Contents|

Effects of Stratification and Gibberellic Acid on Seed Germination of  Rare and Endangered Plant Paeonia decomposita

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2018年08
Page:
106-113
Research Field:
Publishing date:

Info

Title:
Effects of Stratification and Gibberellic Acid on Seed Germination of  Rare and Endangered Plant Paeonia decomposita
Author(s):
ZHOU Xiaohui; CHEN Shengbin; XIA Xiaomei; PENG Peihao
(Ecological Resources and Landscape Research Institute,Chengdu University of Technology,Chengdu,Sichuan 610059)
Keywords:
Paeonia decomposita; gibberellic acid; stratification; rooting percentage; germination percentage
PACS:
-
DOI:
10.11937/bfyy.20173256
Abstract:
In order to explore germination traits of Paeonia decomposita,2014 and 2016 Paeonia decomposita seeds were used as materials,the effects of stratifications and gibberellic acid(GA3)on seed rooting and the effects of GA3 on seed shooting by variance analysis were analyzed.The results showed that,for the rooting rate and germination rate,the 2016 seed with strong vitality was higher than that of the 2014 seed.The rooting day of turf was shorter than that of sand,rooting percentage and percentage of different root length were significantly higher than that of sand.GA3 treatments reduced rooting day,but it significantly decreased the rooting percentage and increased the rotting percentage.Rooting percentage that treatment of turf without GA3,was the highest(90.38%).GA3 reduced the sprouting time.Root length significantly effected on germination percentage.When root length was more than 30 mm and treated with 100 mg?L-1 GA3,seed first sprout day was shorter(70 days),shooting index(0.203) was higher,germination percentage (81.25%) was the highest.The optimum conditions were as follows,first,seed that collected the year was sown in peat soil under constant temperature at 20 ℃.Then,when the root length was increased to 30 mm,treated with 100 mg?L-1 GA3 for 12 hours and transferred to low temperature at 4 ℃.Seed germination was the main reason for its endangered.The experiment provided a theoretical basis for breeding and rescuing Paeonia decomposita.

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Last Update: 2018-05-03