Response of Thiourea Application on Dehydrogenase Activity in Soil, Yield and Oil Content of Niger [Guizotia abyssinica (L.f.) Cass.] under Rainfed Conditions of Bastar Plateau Zone

Namrata, Patel; Chandrakar, T.; Pradhan, Aastha; Sharma, Girijesh Kumar; Chandel, Nisha; Irfan, Shekh

doi:10.20546/ijcmas.2018.708.400

Cited by 4 publications

(2 citation statements)

References 8 publications

(9 reference statements)

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“…In wheat, seed priming with TU leads to a uniform germination pattern with better seedling establishment (Chattha et al ., 2017). Seed priming with TU can also be combined with later foliar application to maximize yield benefits in plants like cluster bean (Meena et al ., 2016) and niger ( Guizotia abyssinica ) (Namrata et al ., 2018).…”

Section: The Use Of Sprs In Cropsmentioning

confidence: 99%

Seed ‘primeomics’: plants memorize their germination under stress

2021

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Seed priming is a pre-germination treatment administered through various chemical, physical and biological agents, which induce mild stress during the early phases of germination. Priming facilitates synchronized seed germination, better seedling establishment, improved plant growth and enhanced yield, especially in stressful environments. In parallel, the phenomenon of 'stress memory' in which exposure to a sub-lethal stress leads to better responses to future or recurring lethal stresses has gained widespread attention in recent years. The versatility and realistic yield gains associated with seed priming and its connection with stress memory make a critical examination useful for the design of robust approaches for maximizing future yield gains. Herein, a literature review identified selenium, salicylic acid, poly-ethylene glycol, CaCl 2 and thiourea as the seed priming agents (SPRs) for which the most studies have been carried out. The average priming duration for SPRs generally ranged from 2 to 48 h, i.e. during phase I/II of germination. The major signalling events for regulating early seed germination, including the DOG1 (delay of germination 1)-abscisic acid (ABA)-heme regulatory module, ABA-gibberellic acid antagonism and nucleus-organelle communication are detailed. We propose that both seed priming and stress memory invoke a 'bet-hedging' strategy in plants, wherein their growth under optimal conditions is compromised in exchange for better growth under stressful conditions. The molecular basis of stress memory is explained at the level of chromatin reorganization, alternative transcript splicing, metabolite accumulation and autophagy. This provides a useful framework to study similar mechanisms operating during seed priming. In addition, we highlight the potential for merging findings on seed priming with those of stress memory, with the dual benefit of advancing fundamental research and boosting crop productivity. Finally, a roadmap for future work, entailing identification of SPR-responsive varieties and the development of dual/multiple-benefit SPRs, is proposed for enhancing SPRmediated agricultural productivity worldwide.

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Section: The Use Of Sprs In Cropsmentioning

confidence: 99%

Seed ‘primeomics’: plants memorize their germination under stress

2021

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“…Niger (Guizotia abyssinica (L.f.) Cass. ), also called Ramtil or Kalatil in India and Noog in Ethiopia is considered a crop with satisfactory oil and seed yield under poor conditions of soil fertility, moisture stress and low managements (Namarata et al, 2018), furthermore, this species is sowing in large scales in mentioned countries.…”

Section: Introductionmentioning

confidence: 99%

Seeds germination of Guizotia abyssinica (L.f.) Cass. stored in different environments and packages

Pagliarini

Monaco-Mello

Gordin

et al. 2021

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Seed quality is defined by several factors such as genetic, physical, physiological and sanitary attributes. Even with all good factors involved, germinating power loss occurs. However, this loss may be reduced by performing procedures to maintain quality, as storage local and packaging. Thus, the objective of the work was to identify the best environment and packaging for storing niger seeds by analyzing germination and seedling biometry. Samples were separated according to treatments being three types of packaging: paper bag (permeable), plastic bag (semi-permeable) and glass container (impermeable). All packages were storage in two environment: storage shad and cold chamber. For all evaluations sub-samples were removed of each type of pack and environment being at one day after harvest (control), 30, 60, 90, 120 and 150 days of storage. The work was conducted at Laboratory of Seed Technology of Grand Dourados Federal University (UFGD). The experimental design was completely randomized, in a factorial scheme 6 × 6 (treatments x days of storage), with four replicates of 50 seeds each. Sowing was performed between "germitest" papers and rolls were kept in a germinator at a temperature of 25°C under constant white light, for 10 days. The traits evaluated were: first count of germination, percentage of germination and seedling length. Storage locations and type of packaging interfered significantly to development of niger (Guizotia abyssinica (L.f.) Cass.) seed germination. The best results in germination were found in seeds stored in glass container in storage shed and in plastic bag in cold chamber.

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