Abstract:
Salinity stress limits the plant growth and yield worldwide. Development of salt tolerant cultivars through selection and breeding is a major objective of the current era research. However, little success is achieved in developing salt tolerant cultivars. Proline accumulation enhances tolerance to salinity in different plant species. Exogenous application of proline is considered as an alternative shotgun approach in improving salt tolerance in plants. In this study, it was attempted to reveal how proline improves ion homeostasis and salt tolerance. Seven cultivars (Faislabad-08, Sahar-06, Galaxy-13, Millat-11, Pasban-90, Inqilab-91, S-24) of wheat (Triticum aestivum L.) were grown under control and saline (150 mM) condition. 100 mM proline was foliarly applied at vegetative growth stage. Salt stress reduced the growth in all cultivars of wheat especially in Galaxy-13. Least salinity induced reduction in growth was observed in S-24. Foliar application of 100 mM proline improves the growth in all cultivars. Maximum improvement due to foliar application of proline was found in cv. Galaxy-13. Foliar application of proline reduced the sodium accumulation in wheat plants and increased the uptake of potassium ion. Foliar application of 100 mM proline also enhanced the chlorophyll content in wheat plants. Proline induced improving effect in growth was greater in cv. Galaxy-13. These results suggest that growth improvement in wheat plants especially in Galaxy-13 was due to improving osmotic adjustment.
Page(s):
113-113
DOI:
DOI not available
Published:
Journal: Abstract Book on Second International Conference on Recent Approaches in Plant Sciences (RAPS-23) 4-5 May 2023 , Volume: 0, Issue: 0, Year: 2023
Keywords:
salt tolerance
,
Wheat
,
Salt stress
,
osmolytes