Seed Priming with Proline as Promising Tool to Mitigate Water Stress on Squash Cultivars

Badr Eldin, Rasha; M. Hassan, Shimaa

doi:10.21608/asejaiqjsae.2023.287107

Seed Priming with Proline as Promising Tool to Mitigate Water Stress on Squash Cultivars

Document Type : Original Article

Authors

Rasha Badr Eldin ¹
Shimaa M. Hassan ²

¹ soil and water department, Faculty of Agriculture, Alexandria University, Egypt

² Department of Vegetable crops, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria 21545, Egypt;

10.21608/asejaiqjsae.2023.287107

Abstract

Proline is considered endogenous regulator that alleviates environmental stresses as water stress. This study investigated the effect of seed priming with proline on summer squash plant to mitigate water stress. Four squash cultivars were used SQ250, Behera, Sp 11/4 and Kaha5/7. The seed priming were hydro-priming (as a control) and priming seeds that primed with 20 mmol proline for 24 hours. The study was conducted in greenhouse where the squash plants were subjected to three irrigation levels (100% FC (Field capacity), 75% FC and 60% FC) in three replicates. The results revealed that water stress significantly decreased all measured physiological parameters (plant height, number of leaves, dry weights, fresh weights, fruit weights and relative chlophyll content index), while proline contents in plants increased with water stress Meanwhile seed priming with proline significantly ameliorate squash tolerance to water stress through improve these parameters. Sp11/4 and Kaha5/7 gave the highest fruit weights so they are the recommended squash cultivars that can be used under water stressed condition after seed priming with proline.

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