Arid
DOI10.1007/s10725-010-9501-x
Impact of dormancy regulating chemicals on salinity induced dormancy in Lasiurus scindicus and Panicum turgidum: two desert glycophytic grasses
El-Keblawy, Ali1,2; Al-Ansari, Fatima1; Al-Shamsi, Naeema1
通讯作者El-Keblawy, Ali
来源期刊PLANT GROWTH REGULATION
ISSN0167-6903
出版年2010
卷号62期号:2页码:163-170
英文摘要

The indigenous forage grasses Lasiurus scindicus and Panicum turgidum are candidate species for the restoration of degraded desert rangelands. The impact of five dormancy regulating chemicals on overcoming salinity-induced germination inhibition was assessed under the best germination conditions in the two species. Seeds were germinated in a series of NaCl concentrations: 0-200 mM NaCl for P. turgidum, and 0-300 mM NaCl for L. scindicus. Lasiurus scindicus seeds were more tolerant to salinity than those of P. turgidum. Twenty percent of P. turgidum seeds germinated in 100 mM NaCl and none in the higher levels, but 47.5% and 8.8% of L. scindicus seeds germinated in 100 and 200 mM NaCl, respectively. The five studied chemicals (fusicoccin, GA(3), kinetin, nitrate and thiourea) did not succeed in improving germination of non-saline treated seeds of the two species, compared to the control, except thiourea in P. turgidum. The salinity-induced germination inhibition in P. turgidum was completely alleviated by the application of gibberellic acid (GA(3)), partially alleviated by the application of fusicoccin, kinetin and thiourea, but not affected by nitrate. In L. scindicus, the germination inhibition was completely alleviated by fusicoccin, GA(3), nitrate and thiourea, but partially alleviated by kinetin. For using the two grass species in restoration of degraded rangelands affected by higher salinity, the results suggest using fusicoccin, GA(3), nitrate and thiourea with L. scindicus and GA(3) with P. turgidum seeds as a preseeding treatment can overcome the problem of reduced germination.


英文关键词Desert grasses Glycophytes Salinity induced dormancy
类型Article
语种英语
国家U Arab Emirates ; Egypt
收录类别SCI-E
WOS记录号WOS:000282426000007
WOS关键词SEED-GERMINATION ; RELIEVING COMPOUNDS ; GROWTH-REGULATORS ; SALT TOLERANCE ; TEMPERATURE ; ALLEVIATION ; STRESS ; RELEASE ; POACEAE ; LIGHT
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/2XILL650/166030
作者单位1.UAE Univ, Fac Sci, Dept Biol, Al Ain, U Arab Emirates;
2.Suez Canal Univ, Fac Educ Al Arish, Dept Biol, Ismailia, Egypt
推荐引用方式
GB/T 7714
El-Keblawy, Ali,Al-Ansari, Fatima,Al-Shamsi, Naeema. Impact of dormancy regulating chemicals on salinity induced dormancy in Lasiurus scindicus and Panicum turgidum: two desert glycophytic grasses[J],2010,62(2):163-170.
APA El-Keblawy, Ali,Al-Ansari, Fatima,&Al-Shamsi, Naeema.(2010).Impact of dormancy regulating chemicals on salinity induced dormancy in Lasiurus scindicus and Panicum turgidum: two desert glycophytic grasses.PLANT GROWTH REGULATION,62(2),163-170.
MLA El-Keblawy, Ali,et al."Impact of dormancy regulating chemicals on salinity induced dormancy in Lasiurus scindicus and Panicum turgidum: two desert glycophytic grasses".PLANT GROWTH REGULATION 62.2(2010):163-170.
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