Effect of Salinity on Germination, Seedling Growth and Acid Phosphatase Activity in Lettuce

Autor:	Issam Saïdi, Mokhtar Lachaâl, Rym Kaddour, Nawel Nasri
Rok vydání:	2015
Předmět:	biology Petri dish Fresh weight Acid phosphatase food and beverages General Medicine biology.organism_classification law.invention Salinity Horticulture Agronomy Distilled water law Seedling Germination Shoot biology.protein
Zdroj:	American Journal of Plant Sciences. :57-63
ISSN:	2158-2750 2158-2742
DOI:	10.4236/ajps.2015.61007
Popis:	The impact of salt stress (NaCl 100 mM) on two lettuce varieties Romaine and Vista was conducted at germination and early seedling stages. The seeds of lettuce varieties were provided by the Seed Laboratory of Tunisian Ministry of Agriculture. The seeds were germinated in Petri dishes with double filter paper in distilled water (control) or NaCl solution (100 mM) for 5 days. The result showed that salinity significantly affected percentage and rate of germination in Vista variety but 100% of germination was found in Romaine. Length and fresh weight of root and shoot were reduced significantly with salt treatment in two lettuce varieties. Regarding biochemical analysis, acid phosphatase activity in root increased in Romaine and decreased in Vista. In shoot, this activity showed no difference with the control in the two varieties. However in cotyledons, and during 24 hours after germination, salinity decreased acid phosphatase activity in both varieties whereas in the later hours (48 - 96 h) this activity reached the value of the control in Romaine and Vista.
Databáze:	OpenAIRE
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