Is the enhancement produced by priming in cottonseeds maintained during storage?

Abstract

The objective of this study was to evaluate: a) whether the effects of hydropriming and osmopriming in manitol on cottonseed germination are maintained during their storage; b) whether the behavior of the treated seeds -in storage-depends on the type of priming substrate used; c) whether seeds from different harvest years [age] have a similar response. The effects of 16 h of hydropriming and 41 h in mannitol were tested at 18 and 25 °C on the velocity of germination, standard germination and the vigor in cottonseeds from the 2007 and 2008 harvests, and within 0, 6 and 12 months of postpriming storage. The enhancement produced by the priming treatments used remained at least for 6 months in the case of hydropriming and 12 months for osmopriming in mannitol. The latter was more effective in increasing velocity of germination and the vigor index (CWVI). Priming enhanced the behavior in both seed lots but was more effective on the younger seeds.Key words: Gossypium hirsutum, priming, germination, vigor, year of harvest, storage.O aumento produtivo associado ao priming em sementes de algodão mantém-se durante o armazenamento?Resumo O objetivo do presente trabalho foi avaliar: (a) se os efeitos do hidropriming e do osmopriming no manitol sobre a germinação das sementes de algodão mantêm-se durante a sua armazenagem, (b) se o comportamento da armazenagem das sementes tratadas depende do substrato do priming empregado, e (c) se sementes de um ano diferente de colheita (idade) respondem de igual maneira. Os efeitos de 16 horas de hidropriming e 41 horas em manitol foram avaliados a 18 °C e 25 °C sobre a velocidade de germinação, a germinação standard e o vigor das sementes de algodão das colheitas de 2007 e 2008 e nos meses 0, 6 e 12 de armazenagem postpriming. O enhancement produzido pelos tratamentos de priming utilizados ficou invariável no mínimo durante 6 meses, no caso do hidropriming, e 12 meses, para o osmopriming em manitol. O osmopriming em manitol foi mais efetivo para aumentar a velocidade de germinação e o índice de vigor (CWVI). O priming melhorou o comportamento em ambos os lotes de sementes mas foi mais efetivo nas sementes mais novas.Palavras-chave: Gossypium hirsutum, priming, germinação, vigor, ano de colheita, armazenagem.

Effects of ultrasonication on increased germination and improved seedling growth of aged grass seeds of tall fescue and Russian wildrye

“…Priming is a pre-sowing treatment that is widely used to promote germination and to improve the quality of seeds under stressed conditions or after ageing from a long period of storage 6 7 . The positive effects of priming treatments, which include halopriming, hydropriming, osmopriming, and thermopriming, among others, on seed performance have been demonstrated in many species 8 . However, these treatments are relatively time-consuming with high labour costs 9 .…”

Effect of Priming Treatment to Enhance Seed Quality of (Sorghum Bicolor (L.) Moench)

“…These observations were parallel to those already depicted by various workers in different crop such as [21] in cotton; [22] in Brassica juncea; [23] in maize; and [24] in Pearl millet. Toselli and Casenave [25] reported that hydro-priming and osmo-priming increase the germination and vigour index.Similar findings were reported by [26] in sunflower seed and in sorghum seeds by [27]. CD (P = 0.05) L=0.001, T=0.002, L x T=0.003, V x L x T=0.0 IV.…”

Physiology in plant science: what lies ahead?

“…Up to now, several chemical products have been used to create seed priming solutions, such as low osmotic potential treatments (osmopriming) from polyethylene glycol (PEG) (Galhaut et al, 2014), NaCl (Bakht et al, 2011), mannitol (Toselli & Casenave, 2014), KNO3 (Singh et al, 2014), KCl (Elouaer & Hannachi, 2012) and CaCl2 (Rehman et al, 2011); nutrients, such as NPK (Al-Mudaris & Jutzi, 1999), Zinc (Prom-U-Thai et al, 2012) and Cu (Begum et al, 2014); and hormones from auxins (GA3) (Heydariyan et al, 2014), brassinolide (Zhang et al, 2007), ethylene (Carvalho et al, 2011c), salicylic acid (Sharafizad et al, 2013), and a wide range of treatments, from acorbic acid (Farooq et al, 2013), selenium (Nawaz et al, 2012), butenolide (Demir et al, 2012), choline (Salama et al, 2011) and chitosan (Mahdavi & Rahimi, 2013) to H2O2 (Santhy et al, 2014), NO (Amooaghaie & Nikzad, 2013) and thiourea (Patade et al, 2012). Curiously, ZnSO4 (osmoconditioning) associated with Trichoderma (biopriming) and application of fungicides (Tivoit and Potent) guaranteed a higher establishment of seedlings and production of rice in the dry season (Zhao et al, 2003), showing a multifaceted approach that involves seed priming.…”