Seed Germination of Ficus vallischaude L. as Affected by Nutrient Media under Laboratory Conditions

2011 ◽  
Vol 5 (1) ◽  
pp. 45-49
Author(s):  
Kaba Urgessa
Keyword(s):  
Seed Germination ◽  
Nutrient Media ◽  
Laboratory Conditions

scholarly journals Effects of Accelerated Aging on Soybean Seed Germination Indexes at Laboratory Conditions

2011 ◽  
Vol 3 (3) ◽  
pp. 126-129 ◽  
Author(s):  
Zahra RASTEGAR ◽  
Mohammad SEDGHI ◽  
Saeid KHOMARI
Keyword(s):  
Seed Germination ◽  
Soybean Seed ◽  
Accelerated Aging ◽  
Laboratory Conditions

Effects of Age, Burial, and Region on Germination and Viability of Halogeton Seed

Weed Science ◽  
1969 ◽  
Vol 17 (1) ◽  
pp. 63-65 ◽  
Author(s):  
W. C. Robocker ◽  
M. C. Williams ◽  
R. A. Evans ◽  
P. J. Torell
Keyword(s):  
Seed Germination ◽  
Soil Surface ◽  
First Year ◽  
Laboratory Conditions ◽  
Winter Conditions ◽  
Field Germination ◽  
Field And Laboratory Conditions ◽  
Halogeton Glomeratus

The longevity of brown and black forms of seed of halogeton (Halogeton glomeratus (M. Bieb.) C. A. Mey.), buried at four depths, was determined for a 10-year period in Nevada, Idaho, Utah, and Washington. The black form of seed had almost 100% field germination at all depths by the end of the first year and had completely germinated or was nonviable by the end of the second. Brown seed on the soil surface began field germination the first year at all locations and had germinated or become nonviable at the end of 6 years. Burial at 1, 3, and 6 inches delayed the peak of viability and tended to increase longevity of brown seed. Germination was less than 0.5% at the end of 10 years, and viability was near zero under both field and laboratory conditions. Seed germinated and lost viability most rapidly in Washington, the location where most favorable winter conditions for germination occurred.

Physical effects of biological soil crusts on seed germination of two desert plants under laboratory conditions

2005 ◽  
Vol 63 (1) ◽  
pp. 344-352 ◽  
Author(s):  
V. Rivera-Aguilar ◽  
H. Godínez-Alvarez ◽  
I. Manuell-Cacheux ◽  
S. Rodríguez-Zaragoza
Keyword(s):  
Seed Germination ◽  
Biological Soil Crusts ◽  
Desert Plants ◽  
Laboratory Conditions ◽  
Soil Crusts ◽  
Physical Effects

scholarly journals BIOLOGY OF SEEDS OF REPRESENTATIVES OF GENUS HYDRANGEA L. IN THE SOUTH URAL BOTANICAL GARDEN (UFA)

2020 ◽  
pp. 13-18
Author(s):  
F. K. Murzabulatova ◽  
◽  
N. V. Polyakova ◽  
Keyword(s):  
Seed Germination ◽  
Seed Quality ◽  
Botanical Garden ◽  
Soil Conditions ◽  
Maximum Weight ◽  
The South ◽  
Laboratory Conditions ◽  
Germination Energy

The morphology and sowing qualities of 7 types of hydrangea from the collection of the South Ural Bo-tanical Garden-Institute of the UFIC RAS were studied. The studies were carried out according to stand-ard methods. Is determined the mass of 1000 pieces seeds of each species, seed quality (germination en-ergy and germination in laboratory and soil conditions), the nature of seed germination, as well as their sowing qualities after different storage periods. It was found that the representatives of the Heteromallae subsection are characterized by heavier and larger seeds (the maximum weight of 1000 pieces of seeds is 0.06-0.09 g) compared with the representatives of the Americanae subsection (weight of 1000 pieces is 0.02 g). In addition, representatives of the Heteromallae subsection, with the exception of H. paniculata, showed consistently high rates of germination (72.3-85.8%) and germination energy (63.3-78.1%) under laboratory conditions; with soil sowing, these indicators are also significantly higher than that of repre-sentatives of the Americanae subsection.

scholarly journals SOWING QUALITIES OF SEEDS AND PRODUCTIVITY OF NON-NARCOTIC VARIETY OF HEMP DEPENDING ON PRE-PLANTING CULTIVATION

2020 ◽  
Author(s):  
И.В. Бакулова ◽  
И.И. Плужникова ◽  
Н.В. Криушин
Keyword(s):  
Seed Germination ◽  
Germination Rate ◽  
Maximum Yield ◽  
Field Conditions ◽  
Yield Increase ◽  
Laboratory Conditions ◽  
Cultivation Technology ◽  
Positive Effect

Представлены результаты изучения влияния предпосевной обработки семян на растения конопли посевной с целью совершенствования технологии возделывания. Применение изучаемых препаратов положительно действовало на энергию прорастания, всхожесть и урожайность растений. В лабораторных условиях отмечено достоверное увеличение всхожести семян при применении препаратов Альбит, ТПС и Биокомплекс БТУ на 5,0 и 7,2 % на сорте Вера, при применении препаратов ТМТД, ВСК и Биокомплекс БТУ – на 5,2 и 5,0 % соответственно на сорте Надежда. В полевых условиях показатель всхожести увеличивался по сравнению с контролем на 4,2-5,6 % у сорта Вера и на 1,8-8,5 % у сорта Надежда. За годы исследований урожайность семян конопли посевной в результате применения протравителей по всем вариантам опыта изменялась на сорте Вера в пределах 0,78-0,96 т/га и 0,66-0,84 т/га на сорте Надежда. Наибольшая прибавка урожайности на сорте Вера отмечена на вариантах с предпосевной обработкой семян препаратами Бункер, ВСК, Лигногумат и Альбит, ТПС. На сорте Надежда установлена максимальная урожайность семян на вариантах с обработкой препаратами Бенорад, СП, Бункер, ВСК и Альбит, ТПС, прибавка урожайности составила 0,16-0,18 т/га или 24,2-27,3 % к контролю. This work presents the results of studying the influence of pre-planting seed cultivation on hemp plants in order to improve the cultivation technology. The implementation of the studied drugs had a positive effect on the germinating power, germination and yield of plants. In laboratory conditions there was a significant increase in seed germination when using drugs Albit, TPS (liquid paste) and BTU Biocomplex 5.0 and 7.2 % for the variety Vera in the use of drugs TMTD, VSK and BTU Biocomplex – 5.2 and 5.0 %, respectively in the variety Nadezhda. In the field conditions, the germination rate increased by 4.2-5.6 % in the Vera variety and 1.8-8.5 % in the Nadezhda variety compared to the control. Over the years of research, the yield of hemp seeds, as a result of the use of disinfectants for all options of the experiment, changed on the Vera variety in the range of 0.78-0.96 t/ha and 0.66-0.84 t/ha on the Nadezhda variety. The greatest increase in yield on the Vera variety was noted in the options with pre-planting cultivation of seeds with Bunker, VSK, Lignohumate and Albit, TPS. On the Nadezhda variety, the maximum yield of seeds was set on options with cultivation with Benorad, SP, Bunker, VSK and Albit, TPS, the yield increase was 0.16-0.18 t/ha or 24.2-27.3 % to control.

scholarly journals Effect of mechanical scarification, chilling, and gibberellic acid on germination of Leucaena leucocephala seeds

2013 ◽  
Vol 7 (3) ◽  
pp. 54-60
Author(s):  
Zaineb S. Omran
Keyword(s):  
Seed Germination ◽  
Leucaena Leucocephala ◽  
Mediterranean Region ◽  
Large Scale ◽  
Low Cost ◽  
Cold Treatment ◽  
Germination Percentage ◽  
Nutrient Media ◽  
Maximum Improvement ◽  
Series Of Experiments

Leucaena leucocephala is a tree species used for several agricultural purposes in Mediterranean region. The seeds of these species exhibit dormancy causing delayed germination. A series of experiments evaluated the effects of various treatments on the germination of leucaena leucocephela L. seeds. Germination of fresh seeds was 46% but it was improved (to about 70%) by mechanical scarification using sand paper. A germination of about 60% was obtained when dry seeds were pre-chilled at 4 ̊C for 2,3 and 4 weeks prior to germination that various storage periods of pre-chilling had no influence upon germination enhancement of seeds. Exposure of seeds to -18 ̊C inhibited germination in comparison to the control. There was no significant increase in germination percentage after cold treatment. Maximum improvement being achieved when seeds were kept dry under alternating cold/ warm temperatures for 8days at two day intervals prior to germination, since germination percentage increased to 73%. A significant promotion was recorded when seeds treated with 100 mg/l GA3 prior to germination and that pre-chilled treatment improved germination percentage compared with those un-chilled the maximum (70%) at 100 mg/l of GA3.The effect of nutrient media on seed germination was studied on MS and B5 media after being stored for one week in refrigerator (at 4°C) or in the freezer (-18°C). The germination percentage of Leucaena seeds cultured on MS medium showed a significant increase over the control for those stored one week at 4°C, when the effect of B5 medium on seed germination was found to be similar to the control (50%) for seeds stored one week at 4°C. These results demonstrate that alternating temperatures (cold/warm) provide faster and highest germination percentage and could be secured at low cost which would be adequate to large scale treatment of Leucaena leucocephala seeds.

scholarly journals Assessment of resistant varieties of maize against Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) in laboratory conditions

1970 ◽  
pp. 06-08
Author(s):  
Kishwar Nawaz, Muhammad Shahid, Farooq Ahmad ◽  
Muhammad Sagheer, Mansoor-ul-Hasan ◽  
Muhammad Asad Saleem, Unsar Naeem-Ullah, Muhammad Sadique
Keyword(s):  
Seed Germination ◽  
Tribolium Castaneum ◽  
Breeding Program ◽  
Post Harvest ◽  
Laboratory Conditions ◽  
Resistant Varieties ◽  
Maize Varieties ◽  
Percent Mortality ◽  
Observation Period ◽  
Coleoptera Tenebrionidae

Grains of five different maize varieties (MMRI Yellow, Pearl White, Malka-2016, YH-1898 and Sadaf) were evaluated for their comparative resistance to Tribolium castaneum under laboratory conditions (30+2°C and 70+5 R.H). Data of percent mortality were taken after 30, 60 and 90 days. Significantly, the maximum mortality of adults was observed in MMRI Yellow (28.57%, 33.67% and 41.61%) in sound seeds and lowest mortality was noted in Sadaf (14.88, 21.33% and 24.99%) during observation period. The seed germination was highest in MMRI Yellow which was 90% while lowest was noted in Sadaf as 50%. The highest protein contents were recorded in Malka-2016 (12.83% and 11.60%) and lowest in YH-1898 (3.90% and 2.50%) in both sound and cracked seeds. However, maximum fiber contents were observed in Malka-2106 (2.76% and 2.16%), while lowest (0.43% and 0.30%) in YH-1898 for both seed types. Consequently, MMRI Yellow variety was proved to be resistance as compared to other varieties with maximum germination. It can be concluded that resistant varieties of maize could be utilized in breeding program to reduce the post-harvest losses of grains.

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