Reserve Mobilization , Total Sugars and Proteins in Germinating Seeds of Durum Wheat ( Triticum Durum Desf. ) under Water Deficit after Short Period of Imbibition

Harb, Amal

doi:10.12816/0000261

Cited by 16 publications

(12 citation statements)

References 22 publications

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“…Because increasing the level of water stress not only inhibits the germination characteristics but the extension growth of the seedlings was also obstructed (Pratap and Sharma, 2010). Water stress also reduced the seed reserve utilization (Soltani et al, 2006 andHarb, 2013) solubilization of sugars (Harb, 2013) during germination which contributed to lower seedling dry weight of wheat. Different wheat genotypes showed differential degree in reduction in shoot length, root length and seedling dry weight in the present study.…”

Section: Seedling Dry Weightmentioning

confidence: 99%

Effect of Polyethylene Glycol Induced Water Stress on Germination and Seedling Growth of Wheat (<i>Triticum aestivum</i>)

et al. 2017

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The performance of twenty wheat genotypes under Polyethylene Glycol (PEG) induced water stress during germination and early seedling growth stages were tested under three levels of water potential i) Control (Tap water), ii) -2 bars and iii) -4 bar at the Crop Physiology and Ecology Laboratory of Hajee Mohammad Danesh Science and Technology University, Dinajpur during September 2014 to October 2014. Rate of germination and vigor index of all wheat genotypes were delayed with the increment of water stress induced by PEG. Shoot and root lengths and seedling dry weight of 10 days old seedlings were found to be reduced due to the increment of water stress. However, the degree of reduction of these parameters with the increment of water stress was not similar for all wheat genotypes. Stress tolerance index (STI) based on seedling dry weight indicated a wide difference in stress tolerance among the wheat genotypes. At moderate water deficit stress, BARI Gom 25, E 34, E 28 and BAW 1170 showed more stress tolerance and the wheat genotypes-Sourav, E 23 and BAW 1140 showed greater stress sensitivity than the other wheat genotypes. At higher water deficit stress, BARI Gom 25, BARI Gom 28, E 28 and BAW 1170 showed more stress tolerance and the wheat genotypes-Satabdi, Sourav, BARI Gom 26, E 23, E 38, E 24, BAW 1163, BAW 1140 and BAW 1151 showed greater stress sensitivity than the others. Considering both moderate and high water deficit stress, BARI Gom 25, E 28 and BAW 1170 were found as tolerant and Sourav, E 23 and BAW 1140 were found as water deficit stress sensitive wheat genotypes.

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Section: Seedling Dry Weightmentioning

confidence: 99%

Effect of Polyethylene Glycol Induced Water Stress on Germination and Seedling Growth of Wheat (<i>Triticum aestivum</i>)

et al. 2017

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“…The Petri dishes were watered with 6 ml of distilled water and covered by plastic paraffin. Then the dishes were incubated in dark room with air conditioning regulated to maintain a constant 25°±1°C for 50 hours (Calıskan and Cuming, 2000;Harb, 2013). Once an hour, all groups were taken out from dark room and their 50 seeds were dried by paper towel and their final weights (FW) of 50 were determined.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Drying of Bread Wheat Seeds Following First Water Uptake on Germination Rate

Yıldırım

2018

Turkish JAF Sci.Tech.

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In semi-arid regions, unfavorable weather conditions are the most important limiting factors for seed germination. The imbibed or germinating seeds in soil can be dried by hot and dry weather. Thus, seeds can largely lose their germination abilities until the next water uptake (called as 'alatav' in Turkish). Before drying, the time of the first water uptake by a seed may be more effective on seed viability at the second water uptake for germination. Therefore, this experiment was conducted to identify the first water uptake rates (WU) of seeds of three bread wheat genotypes (Bezotaja, Kirac and 13-BVD-4) per hour during 50 hours and their germination rates (GR) at the second water uptake after drying the seeds for 3-week in laboratory conditions. The results presented here indicated that the WU and GR were significantly affected by genotypes, imbibition time (T) and their interaction (1% probability level). There was also a significant negative correlation between the WU and GR (r** = -0.9295) at all times studied. Furthermore, the germination ability of Kirac lasted longest (for 38 th hour) when the WU reached to 160.24%, and it was followed by Bezostaya and 13-BVD-4 genotypes (63.34% at 37 th hour and 152.58% 34 th hour, respectively).

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“…This lower emergence performance at Minot appears to be to be partly caused by soil moisture limitations, which was much lower than at Prosper. Water uptake during the first few hours is critical for the success of the seed germination process, as most of the biochemical and molecular changes are intensified during the first 2 to 8 h of water uptake (Harb, 2013). In addition, the soil dryness and total precipitation of 45 mm during the 21-d emergence period at Minot was considered inadequate for good germination and seedling establishment of achene and coated seed treatments.…”

Section: Treatmentmentioning

confidence: 99%

Coating of Hulled Seeds Improved Field Plantability and Grain Yield of Extra‐Large Confectionary Sunflower Achenes

et al. 2019

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Extra‐large (XL) hybrid confection sunflower (Helianthus annuus L.) achenes are popular among snack food consumers, but these achenes perform poorly with precision planters; therefore, the option of planting coated seed from XL achenes was evaluated in this study. The objective of this paper was to evaluate the effect of various coating materials and buildup levels on live seed emergence, precision planting, stand establishment, and crop performance under field conditions. Based on the laboratory results on germination and plantability, four coating materials (polymer A, polymer B, zeolite, and lime) at 30 and 35% buildup levels were selected for the field trails at Prosper, ND. A separate smaller field study was conducted at Minot, ND, to verify the performance of coated seed under different growing conditions. At both Prosper and Minot locations, all the coated seed treatments resulted in significantly higher live seed emergence and grain yield than XL achenes. Live seed emergence of all the coated seed (93–99%) was significantly higher than the XL achenes (88%), and similar or higher than the large achenes (94%) at Prosper. Laboratory singulation of all the coated seed was superior to both XL achenes and large achenes, which contributed to uniform seed spacing in the field for the coated seed. Overall, this study showed that coating the hulled seeds substantially increased seed plantability and crop performance compared with XL achenes and even large achenes. A successful outcome of this study may extend this research to other sunflower seed sizes and possibly other crops.

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Reserve Mobilization , Total Sugars and Proteins in Germinating Seeds of Durum Wheat ( Triticum Durum Desf. ) under Water Deficit after Short Period of Imbibition

Cited by 16 publications

References 22 publications

Effect of Polyethylene Glycol Induced Water Stress on Germination and Seedling Growth of Wheat (<i>Triticum aestivum</i>)

Effect of Polyethylene Glycol Induced Water Stress on Germination and Seedling Growth of Wheat (<i>Triticum aestivum</i>)

The Effect of Drying of Bread Wheat Seeds Following First Water Uptake on Germination Rate

Coating of Hulled Seeds Improved Field Plantability and Grain Yield of Extra‐Large Confectionary Sunflower Achenes

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