Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 0167-6903 |
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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