Germination of melon seeds under water and heat stress: Hydropriming and the hydrotime model

Casenave, Ester C; Toselli, María E

doi:10.15258/sst.2010.38.2.14

Cited by 8 publications

(6 citation statements)

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“…However, as the ambient water potential approaches  b , primed seeds lose their advantage in accumulating hydrotime units because the increase in  b is sufficient to compensate for the decrease in  H . Similar results were reported in lettuce (Bradford, 1995), cotton (Gossypium hirsutum) (Toselli and Casenave, 2005) and melon (Casenave and Toselli, 2010). However, hydropriming significantly improved seed germination and seedling growth under drought conditions in lentil (Eskandari and Alizadeh-Amraie, 2014).…”

Section: Resultssupporting

confidence: 83%

Hydropriming accelerates seed germination of Medicago sativa under stressful conditions: A thermal and hydrotime model approach

Min

Chen

et al. 2017

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This study determined the effects of priming on germination in response to temperature, water potential and NaCl. Thermal and hydrotime models were utilized to evaluate changes in parameters of the model after priming. Priming reduced the amount of thermal time in both cultivars, but slightly increased the base temperature for germination from 1.0 to 3.5°C in "Longdong". Priming significantly increased germination rate at high water potential but had no effect at low water potential. Further, priming reduced the hydrotime constant but made the median base water potential value slightly more positive in both cultivars. Thus, priming increased germination rate in water but decrease it under severe water stress. Germination rate was significantly increased in both cultivars under salinity (NaCl) stress. Moreover, priming improved seedling growth in response to temperature, water and salinity stress in both cultivars.

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Section: Resultssupporting

confidence: 83%

Hydropriming accelerates seed germination of Medicago sativa under stressful conditions: A thermal and hydrotime model approach

Min

Chen

et al. 2017

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“…Poor germination percentage due to soil moisture stress in cowpea has been reported by many researchers (Abayomi andAbidoye, 2009 andZimmermarin et al, 1988). Similar results were also reported by Casenave and Toselli (2010) wherein hydro priming treatment given to melon seeds significantly reduced the hydro-time and increased the rate of germination under water stress conditions without affecting percentage of germination. Fabunmi et al (2012) reported that primed seeds emerge at faster rate and establish uniformly in the water stress condition of soil in comparison with un-primed seeds.…”

Section: Resultssupporting

confidence: 89%

Seed priming improves irrigation water use efficiency, yield and yield components of summer cowpea under limited water conditions

Arun

Hebbar

Bhanuprakas

et al. 2017

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A split plot design field study was conducted during summer month of 2012 and 2013 at the vegetable block of Indian Institute of Horticultural Research in Bangalore, India to evaluate if priming could improve grain yield and water use efficiency of cowpea under limited water supply condition through drip system. Seeds of cultivar Arka garima received the following priming treatments: they were soaked in GA 3 ,Calcium Chloride, Ammonium Molybdate, Potassium Bromide, Magnesium Nitrate, Zinc Sulphate solutions, and aerated distil water (hydropriming) for 24 hours at 15 o C. Crops were subjected to three irrigation intervals in which the irrigation was applied at 0.9, 0.7, 0.5 Epan Replenishment of evaporation. Seed priming treatments reduced the mean emergence time, promoted germination, early canopy development and flower initiation in comparison to the untreated control. Plant height, number of branches, total dry matter accumulation, number of pods per plant, number of seeds per pod, 1000 seed weight and grain and biological yield, harvest index and irrigation water use efficiency increased by different priming treatments. Seed priming increased the irrigation water use efficiency (IWUE) of all irrigation regimes. Grain yields linearly increased at 0.9 Epan Replenishment while maximum IWUE was achieved at 0.5 Epan Replenishment. Results suggest that the use of seed priming with either GA 3 (100ppm) or Ammonium Molybdate (10 -3 M) for 24 hours at low concentration can be helpful in cowpea under both optimum as well as limited water conditions.

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“…increasing germination rate in many crop species [38][39][40][41][42]. In the present study, primed seeds produced more vigorous seedlings than non-primed seeds, in terms of seedling vigor index.…”

Section: Discussionmentioning

confidence: 50%

“…Several studies have confirmed that hydro-priming advanced germination of different crop species resulting in higher values of germination parameters and seedling growth, such as germination index [34], germination time [35], seedling dry weight [36], and seedling vigor index [37]. Moreover, hydro-priming can promote germination, particularly under disadvantageous growth conditions, increasing germination Agriculture 2019, 9, 201 8 of 11 rate in many crop species [38][39][40][41][42]. In the present study, primed seeds produced more vigorous seedlings than non-primed seeds, in terms of seedling vigor index.…”

Section: Discussionmentioning

confidence: 99%

Hydro-priming Effects on Seed Germination and Field Performance of Faba Bean in Spring Sowing

2019

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Seed priming has been used to advance germination and stand in several crops, but relevant research on faba bean (Vicia faba L.) is scarce. Laboratory and field trials were carried out for two years to study the effect of hydro-priming on faba bean germination and field performance in spring sowing. In laboratory trials, the effects of hydro-priming for 0,8,16,24,36, and 48 h on final germination percentage, germination speed, Timson's germination index, mean germination time, mean daily germination, synchronization index, and seedling vigor index were studied. All hydro-priming treatments improved germination parameters of faba bean seeds, except for final germination percentage and mean daily germination compared with non-primed seeds. Averaged over priming duration treatments, hydro-priming improved germination speed by 16.2%, germination synchrony by 20.7%, and seedling vigor index by 13.4%. All hydro-priming durations improved germination synchrony, while hydro-priming for 8, 16, and 24 h provided the highest values of germination speed (2.56, 2.58, and 2.37 seeds day −1 , respectively). Hydro-priming for 8 and 16 h provided the lowest values of mean germination time (5.81 and 5.96 days, respectively). In field trials, hydro-priming periods of 0, 8, 16, and 24 h were compared. On average, seed hydro-priming did not affect significantly seedling emergence 14 days after sowing in the first year, but significantly improved seedling emergence by 34.4% in the second year. No significant effect of seed hydro-priming was noted in the number of plants at 28 and 35 days after sowing. Seed priming for 8 h resulted in higher fresh weight at anthesis by 22.3% and 8.6% in the first and the second year, respectively, than the non-primed control. Similarly, seed priming for 8 h provided higher seed yield by 12.0% in the first year and by 5.9% in the second year compared with non-primed control. Overall, seed hydro-priming accelerated faba bean germination and seedling emergence, but the magnitude of the response was associated with the environment and was more evident under limited soil moisture after sowing, whereas the beneficial effect of priming was masked when rainfall followed sowing. Similarly, the beneficial effect of priming on seed yield was more pronounced with limited soil moisture after anthesis.2 of 11 achieving high yield. In practice, seed quality loosely reflects the overall value of seed according to its intended purpose that must meet the expectations of the end user [3]. Under field conditions, poor seed quality can delay the onset of germination, adversely affect seedling vigor, and reduce the final crop stand. Establishment rate affects crop density and competitiveness of the crop stand [4], tillering or branching [5], and yield [6] and thus is of great importance. Vigorous plants have high ability to capture resources, can better tolerate pests and plant pathogens, compete with weeds, and are expected to be more tolerant to applied herbicides.Priming is a simple procedure that partially hydrates seed...

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Germination of melon seeds under water and heat stress: Hydropriming and the hydrotime model

Cited by 8 publications

References 0 publications

Hydropriming accelerates seed germination of Medicago sativa under stressful conditions: A thermal and hydrotime model approach

Hydropriming accelerates seed germination of Medicago sativa under stressful conditions: A thermal and hydrotime model approach

Seed priming improves irrigation water use efficiency, yield and yield components of summer cowpea under limited water conditions

Hydro-priming Effects on Seed Germination and Field Performance of Faba Bean in Spring Sowing

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