Effect of PEG-induced drought stress on seed germination of four lentil genotypes
Open Access
- 16 September 2013
- journal article
- research article
- Published by Informa UK Limited in Journal of Plant Interactions
- Vol. 9 (1), 354-363
- https://doi.org/10.1080/17429145.2013.835880
Abstract
Seeds of four lentil genotypes (Castelluccio, Eston, Pantelleria, and Ustica) were subjected to five levels (0, 10, 15, 18, and 21%) of polyethylene glycol (PEG-6000). Germination percentage, root length, tissue water content (WC), α- and β-amylases, α-glucosidase activities, and osmolyte content were evaluated at 24, 48, and 72 h after starting the germination test. Water stress reduced seed germination percentage, root length, and seedling WC in all cultivars to different extent. The increase in proline content and total soluble sugars was greater for Eston and Castelluccio compared to the other genotypes. The activity of the enzymes involved in the germination process decreased in all cultivars; the activities of α-amylase and α-glucosidase were most negatively affected by osmotic stress, mainly in the drought sensitive Ustica and Pantelleria. Overall, Eston and Castelluccio were able to express greater drought tolerance and consequently could be used as a valuable resource for breeding programs.Keywords
This publication has 41 references indexed in Scilit:
- Variations in -, -amylase and -glycosidase activities in two genotypes of wheat under NaCl salinity stressAfrican Journal of Agricultural Research, 2013
- Plant root growth, architecture and functionPlant and Soil, 2009
- High levels of asparagine synthetase in hypocotyls of pine seedlings suggest a role of the enzyme in re-allocation of seed-stored nitrogenPlanta, 2006
- Drought and Salt Tolerance in PlantsCritical Reviews in Plant Sciences, 2005
- Pre‐Sowing Seed Treatment—A Shotgun Approach to Improve Germination, Plant Growth, and Crop Yield Under Saline and Non‐Saline ConditionsAdvances in Agronomy, 2005
- Physiological changes after exposure to and recovery from polyethylene glycol-induced water deficit in roots and leaves of durum wheat (Triticum durum Desf.) cultivars differing in drought resistanceJournal of Plant Physiology, 2000
- SeedsPublished by Springer Science and Business Media LLC ,1994
- Variation in osmotic adjustment of accessions of lentil (Lens culinarisMedic.) in response to drought stressActa Botanica Neerlandica, 1992
- Effects of Low Water Potential on Cortical Cell Length in Growing Regions of Maize RootsPlant Physiology, 1990
- Rapid determination of free proline for water-stress studiesPlant and Soil, 1973