Seed Priming Increases Crop Yield Possibly by Modulating Enzymes of Sucrose Metabolism in Chickpea

Kaur, Sarvjeet; Gupta, Anil Kumar; Kaur, Narinder

doi:10.1111/j.1439-037x.2004.00140.x

Cited by 105 publications

(65 citation statements)

References 29 publications

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“…Moreover, under salinity stress, KNO 3 prevents salinity build-up in plant tissues because K + counteracts the harmful effects of Na + toxicity. 29,30 Priming chickpea seeds with mannitol promoted seedling growth 31 and crop yield 32 under water deficit by enhancing enzymes in sucrose metabolism. Similar promotive effects were also reported in rice.…”

Section: Discussionmentioning

confidence: 99%

Seed Priming Alleviated Salt Stress Effects on Rice Seedlings by Improving Na+/K+ and Maintaining Membrane Integrity

Theerakulpisut

Kanawapee

Panwong

2017

IJPB

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The potential of seed priming by different chemicals on alleviation of growth inhibition of rice (Oryza sativa L.) seedlings under salt stress was investigated. A preliminary experiment using 10 seed-priming chemicals including NaCl, KCl, CaCl 2 , KNO 3 , ascorbic acid (AsA), mannitol, polyethylene glycol (PEG 6000 ), sorbitol, wood vinegar and distilled water revealed that mannitol, KNO 3 and wood vinegar were more effective than the others in alleviating salt-induced growth inhibition of 10-day-old seedlings. Various concentrations of mannitol (1, 2 and 3%), KNO 3 (0.25, 0.5 and 0.75%) and wood vinegar (1:1000, 1:300 and 1:100 dilutions) were subsequently used to prime rice seeds to investigate the effects on mitigation of salt-induced growth inhibition and modulation of physiological responses of 4-week-old rice plants grown in a hydroponic solution. All tested concentrations of mannitol, KNO 3 and wood vinegar resulted in seedlings with significantly higher dry weights than those grown from non-primed and hydroprimed seeds under both controlled and saltstressed (150 mM NaCl, 7 days) conditions. Under salt stress, enhanced growth of seedlings raised from seeds primed with all three chemicals was attributable to greater membrane stability, higher chlorophyll content and lower Na + /K + ratio.

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Section: Discussionmentioning

confidence: 99%

Seed Priming Alleviated Salt Stress Effects on Rice Seedlings by Improving Na+/K+ and Maintaining Membrane Integrity

Theerakulpisut

Kanawapee

Panwong

2017

IJPB

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“…The beneficial effects of priming included faster emergence of crop seedlings, early flowering and higher grain yield even under drought stress (Kaur et al, 2005). In sunflower, osmopriming with KNO 3 and hydropriming improved the germination and stand establishment under stress conditions (Kaya et al, 2006).…”

Section: Seed Primingmentioning

confidence: 99%

Plant drought stress: effects, mechanisms and management

Farooq

Wahid

Kobayashi

et al. 2009

Agron. Sustain. Dev.

3,048

1,622

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-Scarcity of water is a severe environmental constraint to plant productivity. Drought-induced loss in crop yield probably exceeds losses from all other causes, since both the severity and duration of the stress are critical. Here, we have reviewed the effects of drought stress on the growth, phenology, water and nutrient relations, photosynthesis, assimilate partitioning, and respiration in plants. This article also describes the mechanism of drought resistance in plants on a morphological, physiological and molecular basis. Various management strategies have been proposed to cope with drought stress. Drought stress reduces leaf size, stem extension and root proliferation, disturbs plant water relations and reduces water-use efficiency. Plants display a variety of physiological and biochemical responses at cellular and whole-organism levels towards prevailing drought stress, thus making it a complex phenomenon. CO 2 assimilation by leaves is reduced mainly by stomatal closure, membrane damage and disturbed activity of various enzymes, especially those of CO 2 fixation and adenosine triphosphate synthesis. Enhanced metabolite flux through the photorespiratory pathway increases the oxidative load on the tissues as both processes generate reactive oxygen species. Injury caused by reactive oxygen species to biological macromolecules under drought stress is among the major deterrents to growth. Plants display a range of mechanisms to withstand drought stress. The major mechanisms include curtailed water loss by increased diffusive resistance, enhanced water uptake with prolific and deep root systems and its efficient use, and smaller and succulent leaves to reduce the transpirational loss. Among the nutrients, potassium ions help in osmotic adjustment; silicon increases root endodermal silicification and improves the cell water balance. Low-molecular-weight osmolytes, including glycinebetaine, proline and other amino acids, organic acids, and polyols, are crucial to sustain cellular functions under drought. Plant growth substances such as salicylic acid, auxins, gibberrellins, cytokinin and abscisic acid modulate the plant responses towards drought. Polyamines, citrulline and several enzymes act as antioxidants and reduce the adverse effects of water deficit. At molecular levels several drought-responsive genes and transcription factors have been identified, such as the dehydration-responsive element-binding gene, aquaporin, late embryogenesis abundant proteins and dehydrins. Plant drought tolerance can be managed by adopting strategies such as mass screening and breeding, marker-assisted selection and exogenous application of hormones and osmoprotectants to seed or growing plants, as well as engineering for drought resistance. drought response / stomatal oscillation / osmoprotectants / hormones / stress proteins / drought management / CO 2

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“…Comparing the mean of the effects of interplay (Figure 2) showed that the longest (1.02 cm) and shortest (0.44 cm) seedling length observed for 24 hours seed priming with boric acid 1.5% and control (without priming) concentration, respectively. Material transport in primed seeds is high because of higher activity of enzymes involved in sucrose metabolism (sucrose synthase, invertase, sucrose phosphate synthase), so these seeds have higher biological power and germinate quicker and produce plumule and radicle, so clearly have a higher seedling length (Kaur et al, 2005).…”

Section: Seedling Lengthmentioning

confidence: 99%

Determination of Optimum Duration and Concentration of Stevia (Stevia rebaudiana Bert.) Seed Priming with Boric Acid (H3BO3)

Shahverdi

Omidi

Tabatabaei

2017

Türkiye Tarımsal Araştırmalar Dergisi

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Abstract:In order to determine optimal duration and concentration of Stevia seed priming with boric acid for improving germination, an experimental factorial completely randomized design with three replications was conducted in the laboratory of Seed Science and Technology, Shahed University of Tehran in 2015. The first factor was different concentrations of boric acid (0, 0.5, 1.0, 1.5 and 2.0 percent) and the second factor was priming duration (0, 8, 16, 24 and 32 hours). Effects of concentration and priming duration with boric acid were significant on germination percentage, mean germination time, germination rate, germination energy, germination uniformity, mean daily germination, germination daily speed, germination value, seedling length and seed vigor index. The highest values for germination percentage, germination rate, germination energy, means of daily germination, germination value and seedling vigor index were observed after 24 hours of boric acid priming. The highest germination percentage, germination rate, germination potential, germination value and seed vigor index were obtained in 2.0% boric acid priming. 24 hours priming at 1.0% concentration of boric acid had the highest germination uniformity. The seedling length was highest in 24 hours priming at 1.5% concentration of boric acid. In general, Stevia seed priming with 1.5 to 2.0% of boric acid for 24 hours had positive effects on germination indexes and seedling growth.

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Seed Priming Increases Crop Yield Possibly by Modulating Enzymes of Sucrose Metabolism in Chickpea

Cited by 105 publications

References 29 publications

Seed Priming Alleviated Salt Stress Effects on Rice Seedlings by Improving Na+/K+ and Maintaining Membrane Integrity

Seed Priming Alleviated Salt Stress Effects on Rice Seedlings by Improving Na+/K+ and Maintaining Membrane Integrity

Plant drought stress: effects, mechanisms and management

Determination of Optimum Duration and Concentration of Stevia (Stevia rebaudiana Bert.) Seed Priming with Boric Acid (H3BO3)

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