Arid
DOI10.1071/RJ17121
Environmental factors affecting the germination and emergence of white horehound (Marrubium vulgare L.): a weed of arid-zone areas
Javaid, Muhammad M.1,2; Florentine, Singarayer K.2; Ali, Hafiz1; Chauhan, Bhagirath S.3
通讯作者Florentine, Singarayer K.
来源期刊RANGELAND JOURNAL
ISSN1036-9872
EISSN1834-7541
出版年2018
卷号40期号:1页码:47-54
英文摘要

White horehound (Marrubium vulgare L.), is a troublesome weed of arid zones, particularly in cropping and grazing areas. Understanding the seed ecology of white horehound is relevant to its management. The present study investigated the effects of temperature, light, osmotic potential, salinity, pH, and seeding depth on seed germination and seedling emergence of white horehound. Seeds germinated over a wide range of temperatures, with highest germination (100%) occurring at 25/20 degrees C in either 12-h alternating light/dark or complete darkness. Germination decreased from 92% to 10% as the osmotic potential decreased from 0 to minus 0.6 MPa and germination was completely inhibited at minus 0.8 MPa. Increasing concentration of sodium chloride (salinity) from 50 to 150 mM reduced germination from 68% to 11% but was completely inhibited at 200 mM. Germination was not limited by variation of pH in solutions of pH 5 to pH 10. Maximum germination (99%) occurred at pH 7, but slightly decreased (90%) in acidic or alkaline media. Surface located seeds were highly germinable (87%) where seedling emergence significantly declined as seeding depth increased from 0.5 to 3 cm. Nil seedling emergence was occurred at 4 cm burial depth. Light significantly affected germination, time to 50% germination, mean germination time and germination index. Increasing osmotic and salinity stress both significantly increased the time to start germination, time to 50% germination, mean germination time, but decreased germination index. Burial depth adversely affected seedling emergence with surface located seedlings emerging earlier (4.2 days) compared with 20 days for seeds buried at 3 cm. Results suggest that effective management of white horehound should consider targeting surface located seeds in combination with tools that induce minimal soil disturbance, particularly in relatively nonsaline environments.


英文关键词burial depth photoperiod salt stress temperature
类型Article
语种英语
国家Pakistan ; Australia
收录类别SCI-E
WOS记录号WOS:000428045400006
WOS关键词SEED-GERMINATION ; WATER POTENTIALS ; SOIL TEXTURE ; ECOLOGY ; SALINITY ; TEMPERATURE ; GROWTH ; PLANTS ; DEPTH
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212554
作者单位1.Univ Sargodha, Univ Coll Agr, Dept Agron, Sargodha 40100, Pakistan;
2.Federat Univ Australia, Fac Sci & Technol, Ctr Environm Management, POB 663, Ballarat, Vic 3350, Australia;
3.Univ Queensland, QAAFI, Ctr Plant Sci, Gatton, Qld 4343, Australia
推荐引用方式
GB/T 7714
Javaid, Muhammad M.,Florentine, Singarayer K.,Ali, Hafiz,et al. Environmental factors affecting the germination and emergence of white horehound (Marrubium vulgare L.): a weed of arid-zone areas[J],2018,40(1):47-54.
APA Javaid, Muhammad M.,Florentine, Singarayer K.,Ali, Hafiz,&Chauhan, Bhagirath S..(2018).Environmental factors affecting the germination and emergence of white horehound (Marrubium vulgare L.): a weed of arid-zone areas.RANGELAND JOURNAL,40(1),47-54.
MLA Javaid, Muhammad M.,et al."Environmental factors affecting the germination and emergence of white horehound (Marrubium vulgare L.): a weed of arid-zone areas".RANGELAND JOURNAL 40.1(2018):47-54.
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