Enhancement of Tainan 9 Peanut Seed Storability and Germination under Low Temperature

Abstract

Low temperature condition during December to January can limit seed emergence and seedling establishment for peanut production in Thailand. The objective of this study was to determine the effects of peanut seed priming on seed germination and vigor under optimal and low temperature conditions before and after 9 months of storage. Tainan 9 peanut seeds were primed with salicylic acid (SA), ascorbate (ASA), CaCl2, or chitosan and tested for germination at 25°C (optimal temperature) and 15°C (low temperature) before and after a 9-month storage period. Seed priming with 50 mg·L−1 SA and 50 mg·L−1 ASA for 12 hours before germinating improved germination at 15°C when compared to untreated seeds both before and after 9-month storage. The high seed quality, illustrated by high germination percentage, high seed vigor, and low mean germination time related to the low autoxidation substrates: lipoxygenase (LOX), malondialdehyde (MDA), and high antioxidants: superoxide dismutase (SOD) and catalase (CAT). It suggests that peanut seed priming with salicylic acid and/or ascorbate can improve seedling emergence and growth under low temperature conditions.

Effect of Duration and Substance of Priming White Teosinte Hybrid Seed on Improves Viability, Seedling Vigor, Growth and Forage Productivity A- Effect of Priming and Its Duration on Viability and Seedling Vigor

“…Wondimu et al (2018 showed that the highest seed germination%, seedling dry weight seedling length, seedling vigor index were recorded when seed soaking in ZnSO4 and hydro-primin over the unprimed sorghum seeds. Jeammuangpuk et al (2020) found that seed soaking for in 50 mgL −1 of SA before germinating encouraged seed germination when compared to un-soaked seeds. Harris et al (2000) showed that soaking seed in water on the farm significantly improved establishment and viability of chickpea and maize, caused in faster growth, early flowering and maturation and higher yields.…”

Amelioration of the physio-biochemical responses to salinity stress and computing the primary germination index components in cauliflower on seed priming

“…There are various approaches to seed priming such as hydropriming, halopriming, osmopriming, hormoprimimg, biopriming, thermopriming, and solid matrix priming [ [25] , [26] , [27] , [28] , [29] , [30] ]. The consequences of priming are influenced by the priming agent, the duration of priming, and the dosage of priming agents [ 31 ].…”

Study of Inducing Factors on Resveratrol and Antioxidant Content in Germinated Peanuts

“…The germination status of peanuts soaked in SA and ASA was observed at 25 °C and 15 °C. At 15 °C, the germination ratios of peanuts soaked in SA and ASA were 97% and 98%, respectively, while the germination ratio of the control group was only 86% [ 19 ].…”