scholarly journals Seed germination of species of the Juan Fernández archipiélago under laboratory conditions

2007 ◽  
Vol 64 (1) ◽  
Author(s):  
Jaime G Cuevas ◽  
Javier A Figueroa
Keyword(s):  
Seed Germination ◽  
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 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.

scholarly journals In-vitro Seed Germination Biology of Milicia Excelsa Population Collected from Benchi-Maji Zone, South Western Ethiopia

2020 ◽  
Author(s):  
MOHAMMED ADEFA SEID ◽  
Yigardu Mulatu ◽  
Agena Anjulo ◽  
Semaigzer Ayalew ◽  
Marshet Nigatu ◽  
...  
Keyword(s):  
Seed Germination ◽  
Tap Water ◽  
Germination Rate ◽  
Germination Percentage ◽  
Hot Water ◽  
Laboratory Conditions ◽  
Southwestern Ethiopia ◽  
Micro Propagation ◽  
Milicia Excelsa

Abstract Background: In Ethiopia, species used for timber production are limited to few species. So, it is becoming necessary to find innovative ways of maintaining and improving the genetic quality of species such as Milicia excelsa by domesticating them into a wider scale of ecological and social environment. Hence, the main objective of this study was to investigate the seed germination biology and behavior of Milicia excelsa under in-vitro laboratory conditions so as to promote the domestication and establishment of seed production areas (SPA) in-situ. Methods: Seeds collected from Benchi district of Benchi-Maji zone of southwestern Ethiopia were subjected to germination biology in-vitro to determine the germination responses of M. excelsa seeds under laboratory conditions. So, a total of 1200 seeds were randomly selected, treated and prepared using four treatments procedures with six replications for paper method and 3 replications for sand method, and tested using paper methods in CRD design. So, 600 seeds were tested using paper and sand methods each where 25 seeds were tested for each replication in paper and 50 seeds for each replication in sand method. The germination process was lasted between 19 March 2020 and 15 May 2020. Result: The mean germination percentage of seeds of M. excelsa was noticed to be lower than 20%. This is below the expected (45%) germination rate of mature and healthy seed lot. Overall, seeds that were not treated using any pre-sowing treatments has shown relatively better germination percentage (19%) followed by seeds rubbed by hand (15%). Analysis of one-way t-test shows that the effects untreated (control –T1) and rubbing by hand treatments (T4) is significant at p < 0.05 compared to the effects of the other pre-sowing treatments (T2- seeds only washed with normal tap water, and T3- seeds washed and soaked in hot water for 15 minutes) on the germination capability of seeds of M. excelsa . However, no significance difference was observed between control (T1) and hand scarification (T2). Conclusions: The average germination of M. excelsa seeds combined for all treatments is lower than 20% which is lower germination when comparing with other similar research reported in other countries. Therefore, it required to include and test other pre-sowing treatments including tissue culture micro-propagation of seeds to maximize the germination of M. excelsa seeds helping to get enough seedlings required for the domestication project.

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