Arid
EFFECTS OF SALINITY, TEMPERATURE, LIGHT AND DORMANCY REGULATING CHEMICALS ON SEED GERMINATION OF SALSOLA DRUMMONDII ULBR
Rasheed, Aysha; Hameed, Abdul; Khan, M. Ajmal; Gul, Bilquees
通讯作者Gul, Bilquees
来源期刊PAKISTAN JOURNAL OF BOTANY
ISSN0556-3321
EISSN2070-3368
出版年2015
卷号47期号:1页码:11-19
英文摘要

Salsola drummondii Ulbr. is a perennial halophyte found in salt deserts of southern Balochistan, Pakistan. Experiments were conducted to study the effects of salinity (0, 200, 400, 600, 800 and 1000 mM NaCl), thermoperiod (10/20, 15/25, 20/30 and 25/35 degrees C), light (12-h photoperiod and dark) and dormancy regulating chemicals (DRCs) on germination, recovery and viability of the seeds of S. drummondii. Seeds of S. drummondii germinated quickly in distilled water at different temperature regimes and increases in salinity decreased seed germination. Interestingly, few seeds could even germinate in 1000 mM NaCl treatment, which is about twice as high as seawater salinity. Seeds were partially photoblastic and showed relatively higher germination under 12-h photoperiod than in dark. Seeds showed poor recovery of germination from salinity and particularly when germinated in dark. Germination inhibition at high salinity (800 mM NaCl) under 12-h photoperiod was partially alleviated by the exogenous application of different DRCs, particularly fusicoccin. Moreover, all the DRCs, except GA(4+7), ameliorated germination of salt stressed seeds under complete darkness and GA(4) and fusicoccin were most effective. Our study shows that seeds of S. drummondii are highly tolerant to salinity and variation in temperature but partially photoblastic nature indicate that seeds will not germinate if buried under the soil. Seed germination under saline conditions can be improved by the use of DRCs particularly by application of fusicoccin.


英文关键词Fusicoccin Germination recovery Halophyte Salt desert Seed germination Seed viability
类型Article
语种英语
国家Pakistan
收录类别SCI-E
WOS记录号WOS:000353029600002
WOS关键词ZYGOPHYLLUM-SIMPLEX L. ; ALLENROLFEA-OCCIDENTALIS ; DIMORPHIC SEEDS ; SUAEDA-SALSA ; GROWTH ; FUSICOCCIN ; SHRUB ; ALLEVIATION ; STRATEGIES ; TOLERANCE
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/189467
作者单位Univ Karachi, Inst Sustainable Halophyte Utilizat, Karachi 75270, Pakistan
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GB/T 7714
Rasheed, Aysha,Hameed, Abdul,Khan, M. Ajmal,et al. EFFECTS OF SALINITY, TEMPERATURE, LIGHT AND DORMANCY REGULATING CHEMICALS ON SEED GERMINATION OF SALSOLA DRUMMONDII ULBR[J],2015,47(1):11-19.
APA Rasheed, Aysha,Hameed, Abdul,Khan, M. Ajmal,&Gul, Bilquees.(2015).EFFECTS OF SALINITY, TEMPERATURE, LIGHT AND DORMANCY REGULATING CHEMICALS ON SEED GERMINATION OF SALSOLA DRUMMONDII ULBR.PAKISTAN JOURNAL OF BOTANY,47(1),11-19.
MLA Rasheed, Aysha,et al."EFFECTS OF SALINITY, TEMPERATURE, LIGHT AND DORMANCY REGULATING CHEMICALS ON SEED GERMINATION OF SALSOLA DRUMMONDII ULBR".PAKISTAN JOURNAL OF BOTANY 47.1(2015):11-19.
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