[1]朱敏嘉,黄俊华,杨文英,等.裕民贝母种子形态休眠特性研究[J].北方园艺,2019,43(21):109-117.[doi:10.11937/bfyy.20190671]
　ZHU Minjia,HUANG Junhua,YANG Wenying,et al.Study on Seed Morphological Dormancy Characteristics in Fritillaria yuminensis X.Z.Duan[J].Northern Horticulture,2019,43(21):109-117.[doi:10.11937/bfyy.20190671]

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裕民贝母种子形态休眠特性研究

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 43卷期数: 2019年21 页码: 109-117 栏目: 出版日期: 2019-11-15

Title:: Study on Seed Morphological Dormancy Characteristics in Fritillaria yuminensis X.Z.Duan

作者:: 朱敏嘉1; 黄俊华1; 杨文英2; 王厚强1; 帕孜来提古丽?塞买提1; 王严严1; （1.新疆农业大学林学与园艺学院，新疆乌鲁木齐 830052；2.新疆农业大学林业研究所，新疆乌鲁术齐 830052）

Author(s):: ZHU Minjia1; HUANG Junhua1; YANG Wenying2; WANG Houqiang1; PAZILAITIGULI?Saimaiti1; WANG Yanyan1; (1.College of Forestry and Landscape Architecture，Xinjiang Agricultural University，Urumqi,Xinjiang 830052;2.Institute of Forestry，Xinjiang Agricultural University，Urumqi,Xinjiang 830052)

关键词:: 裕民贝母; 种子形态休眠; 吸水特性; 胚; 内源抑制物; GA3; 低温层积

Keywords:: Fritillaria yuminensis; seed morphology dormancy; water absorption characteristics; embryo; endogenous inhibitors; GA3; low temperature stratification

DOI:: 10.11937/bfyy.20190671

文献标志码:: A

摘要:: 选取裕民贝母种子为研究对象，通过对种子基本生物学特性、种子休眠原因、种子形态休眠解除方法进行研究，探讨种子休眠诱因，确定种子休眠类型，提出最适种子形态破眠方法。结果表明：1）种子含水量正常，生活力高，透水性良好，无吸水障碍；2）种子结构完整，点状胚无分化结构，处于原胚阶段；3）胚乳（含胚）水提液抑制白菜种子发芽的效果最强；4）种子形态休眠自然解除需80 d，GA3：30 mg?L-1处理和低温层积处理仅需60 d，此外GA3：30 mg?L-1处理能够提高胚率。综上，种皮透性不是影响种子休眠的因素，胚发育不全和内源抑制物是导致种子休眠的主要原因，裕民贝母种子存在形态生理休眠，最适形态破眠方法为GA3：30 mg?L-1处理。

Abstract:: The seeds of Fritillaria yuminensis X.Z.Duan were selected as the research object，basic biological characteristics，dormancy reasons and morphological dormancy breaking methods of seeds were studied.The purpose of this study was to discuss the reasons of seed dormancy，determine the type of seed dormancy，propose to find the best method of breaking seed morphology dormancy.The results showed that，1) The seed had normal water content，high viability，good water absorption，without any water absorption barriers；2) The seed structure was complete，but the punctate embryo has no differentiation structure，which was in the original embryo stage；3) The water extract of endosperm (including embryo) inhibited the germination on B.pekinensis seeds most effectively；4) It took 80 days for breaking seed morphology dormancy naturally，but GA3：30 mg?L-1 and CK needed 60 days.Besides，GA3：30 mg?L-1 could improve the embryo rate.Above all，F.yuminensis seeds existed morphophysiological dormancy；the permeability of seed coat was not the factor affecting seed dormancy，but uncompleted embryo and endogenous inhibitor were two main factors causing seed dormancy；GA3：30 mg?L-1 treatment was the best method to break seed morphology dormancy.

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备注/Memo

第一作者简介：朱敏嘉（1993-），女，湖南郴州人，硕士研究生，研究方向为风景园林植物应用。E-mail：464622907@qq.com.责任作者：黄俊华（1973-），女，新疆乌鲁木齐人，博士，教授，现主要从事植物分类学和植物地理等研究工作。E-mail：huangjunhua-7311@163.com.基金项目：国家自然科学基金资助项目(31660088)。收稿日期：2019-05-06

更新日期/Last Update: 2019-11-26