scholarly journals Seed Germination as Assessment for “ex situ” Conservation of Diplotaxis sp

2012 ◽  
Vol 69 (2) ◽  
Author(s):  
Simona Laura LAZAR ◽  
Doru PAMFIL ◽  
Mihai Lucian LUNG
Keyword(s):  
Seed Storage ◽  
Germination Percentage ◽  
Interactive Effects ◽  
Ex Situ ◽  
Physiological Status ◽  
Before And After ◽  
The Status ◽  
Storage Behavior ◽  
Storage Methods ◽  
Selection Of

The effective seed storage methods provide a unique opportunity to preserve large amount of germplasm. Evaluation of the physiological status of the seeds before and after the storage is required for better selection of the methods and lots of seeds for conservation. To evaluate the status of the seeds, 26 accessions of different species were evaluated in two consecutive years. Four replicates of 50 seeds of each population were induced to germinate in 2010 and three replicates of 50 sees in 2011. A 2 × 2x2 factorial experiment investigated the interactive effects of accession, culture medium and year at a temperature >20OC. The germination and the Germination Velocity Index were evaluated. The results showed that there was no loss of viability before and after storage but some of the accessions had germination percentage under 50%. This happened mainly to the seeds gathered from the wild and to one commercial variety in 2010. In 2011 all accessions showed good germination with better results on agar than on filter paper.  Seeds of Diplotaxis sp possess orthodox storage behavior and therefore they are suited for ex situ conservation in seed banks.

scholarly journals Experimental seed germination for ex situ conservation of Mexican Podostemaceae

2019 ◽  
Vol 97 (3) ◽  
pp. 413 ◽  
Author(s):  
Valeria Flores-Enríquez ◽  
Guillermo Castillo ◽  
Margarita Collazo-Ortega
Keyword(s):  
Seed Germination ◽  
Storage Time ◽  
Light Quality ◽  
Germplasm Conservation ◽  
Seed Storage ◽  
Germination Percentage ◽  
Seed Banks ◽  
Ex Situ ◽  
Effect Of Temperature ◽  
Collection Site

<p><strong>Background</strong>: Podostemaceae are extremely susceptible to local extinction by habitat loss. Since ~70 % of the river systems in Mexico show some degree of water contamination, it is relevant to generate information about seed storage and germination behavior to design germplasm conservation strategies (<em>e.g</em>., <em>ex situ</em> seed banks) of Mexican podostemads.</p><p><strong>Hypotheses</strong>: Seed germination decreases as seed storage time increases. Further, light quality, temperature and collection site influence similarly the germination response of both species.</p><p><strong>Studied species</strong>: <em>Marathrum foeniculaceum</em> Humb. &amp; Bonpl., <em>Noveloa coulteriana</em> (Tul.)<em> </em>C. Philbrick</p><p><strong>Study site and years of study</strong>: 13 different seeds collections (1996-2013), at four locations in the rivers Horcones and Arroyo del Rincon Jalisco, México. </p><p><strong>Methods</strong>: A germination chamber experiment was performed to evaluate the effect of temperature, light quality and storage time on the germination of both species.</p><p><strong>Results</strong>: Seeds lose viability after nine years of storage. In both species, the time to reach the highest Accumulated Germination Percentage (AGP) was faster in seeds of one-two yr compared to seeds of six-seven yr. <em>N. coulteriana</em> have significant differences in Final Germination Percentage (FGP) between collection rivers. Storage time affects AGP of <em>N. </em>coulteriana more than in <em>M. foeniculaceum.</em></p><p><strong>Conclusions</strong>: Both species can form <em>ex situ</em> seed banks up to 8 yr age in paper bags storage. <em>N. coulteriana</em> is more susceptible to variation in storage conditions compared to <em>M. </em><em>foeniculaceum</em>. Collection site affect seed germination after storing.  Long-term conventional <em>ex situ</em> seed germination storage is not a viable strategy to conserve germplasm of Podostemaceae.</p>

scholarly journals The Morphological Features and Biology of a Relict and Endangered Woody Plant Species: Chamaedaphne calyculata (L.) Moench (Ericaceae)

Plants ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 129
Author(s):  
Anna Źróbek-Sokolnik ◽  
Piotr Dynowski ◽  
Mieczysława Aldona Fenyk
Keyword(s):  
Leaf Blade ◽  
Storage Time ◽  
Seed Storage ◽  
Germination Percentage ◽  
Ex Situ ◽  
Germination Index ◽  
Western Boundary ◽  
Biometric Analysis ◽  
Chamaedaphne Calyculata ◽  
Germination Process

Chamaedaphne calyculata (L.) Moench is a rare post-glacial relic, which reaches the south-western boundary of its European range in Poland. However, little is known about the morphology and biology of this species. In this study a biometric analysis of assimilating leaves and general morphological appearance was carried out; flowering, fruiting, and seed production in a natural site were described and the ability of seed germination was determined after varied seed storage time at 0–2, 2–4, 6–8, and 21–23 °C. A quite large intrapopulation variability was found as regards the features under analysis. The most varied features included the length of the petiole, followed by the leaf blade area, while the length to the width of the leaf blade was the least varied feature. C. calyculata flowered abundantly and about 50% developed flowers turned into fruits. On average there were 56 seeds per fruit with a predominance of mature seeds. The length of the seed storage time had a significant effect on all parameters of the germination process. The temperature at which the seeds were stored, apart from the time to maximum germination parameter, had a significant effect on other parameters of the germination process. Interactions between the seeds storage time and temperature factors were observed only for germination percentage, germination index, and germination index rate parameters. The ability of seeds to germinate, non-creation of the seed bank and other results of the research provide new information necessary for planning and carrying out conservation procedures (including active conservation in ex situ conditions).

Seed storage behavior of Musa balbisiana Colla, a wild progenitor of bananas and plantains - Implications for ex situ germplasm conservation

2021 ◽  
Vol 280 ◽  
pp. 109926
Author(s):  
Shivani Singh ◽  
Anuradha Agrawal ◽  
Rajeev Kumar ◽  
Robert Thangjam ◽  
Kattukkunnel Joseph John
Keyword(s):  
Germplasm Conservation ◽  
Seed Storage ◽  
Ex Situ ◽  
Wild Progenitor ◽  
Musa Balbisiana ◽  
Storage Behavior ◽  
Seed Storage Behavior

Ex-Situ Seed Storage Behavior ofDipcadi saxorumBlatter, an Endangered Species from India

2009 ◽  
Vol 10 (4) ◽  
pp. 282-292
Author(s):  
Srinivasa Rao Ch. ◽  
V. Pandey ◽  
A. Soni ◽  
S. C. Naithani
Keyword(s):  
Endangered Species ◽  
Seed Storage ◽  
Ex Situ ◽  
Storage Behavior ◽  
Seed Storage Behavior

scholarly journals TECHNOLOGICAL PARAMETERS OF SEEDS APPLIED TO THE SELECTION OF SUPERIOR MOTHER TREES FROM Ormosia discolor SPRUCE EX BENTH

2021 ◽  
Vol 45 ◽  
Author(s):  
Helinara Lais Vieira Capucho ◽  
Manuel de Jesus Vieira Lima Júnior ◽  
Angela Maria da Silva Mendes ◽  
Maria Teresa Gomes Lopes ◽  
Amazoneida Sá Peixoto Pinheiro ◽  
...  
Keyword(s):  
Water Content ◽  
Native Species ◽  
Primary Root ◽  
Seed Storage ◽  
Germination Percentage ◽  
Technological Parameters ◽  
Physical Dormancy ◽  
Randomized Design ◽  
Nodulation Capacity ◽  
Selection Of

ABSTRACT The study on the native species of fast growth and nodulation capacity, Ormosia discolor, intends to conserve genetic resources and make available seed lots of high vigor for seed orchards. This work evaluates the physical and physiological characteristics of seeds from 20 O. discolor trees as a subsidy for selecting superior mother trees. Twenty matrices selected from a population in the state of Amazonas were inventoried. Physical tests were performed on the seeds collected, including water content, biometrics, the weight of one thousand seeds, and coat permeability test. For vigor estimates and classification regarding seed storage, the seeds were frozen for five months. The germination test was carried out at a constant temperature of 30 °C. It was used a completely randomized design consisting of 20 mother trees, 4 replicates, and 25 seeds per plot. The germination characteristics evaluated were germination percentage, speed index, mean germination time, and synchronization index. Cut seeds are more efficient for determining water content. All biometric variables are representative for the selection of vigorous lots, with emphasis on geometric diameter, surface area, and sphericity of seeds. Species seeds were classified as orthodox and as having physical dormancy. The protrusion of the primary root is the best morphological characteristic for evaluating germination in the laboratory. The mother trees 7, 16, and 10 showed superior characteristics for dendrometric and technological data, being indicated for marking, phenological monitoring, and planting.

Strategic Role of Zakat in Multidimensional Quality of Life in Sijunjung, Indonesia

2018 ◽  
Vol 15 (1) ◽  
pp. 55-72
Author(s):  
Herlin Hamimi ◽  
Abdul Ghafar Ismail ◽  
Muhammad Hasbi Zaenal
Keyword(s):  
Quality Of Life ◽  
Positive Impact ◽  
Wealth Distribution ◽  
Absolute Poverty ◽  
Before And After ◽  
The Status ◽  
Being There ◽  
The Impact

Zakat is one of the five pillars of Islam which has a function of faith, social and economic functions. Muslims who can pay zakat are required to give at least 2.5 per cent of their wealth. The problem of poverty prevalent in disadvantaged regions because of the difficulty of access to information and communication led to a gap that is so high in wealth and resources. The instrument of zakat provides a paradigm in the achievement of equitable wealth distribution and healthy circulation. Zakat potentially offers a better life and improves the quality of human being. There is a human quality improvement not only in economic terms but also in spiritual terms such as improving religiousity. This study aims to examine the role of zakat to alleviate humanitarian issues in disadvantaged regions such as Sijunjung, one of zakat beneficiaries and impoverished areas in Indonesia. The researcher attempted a Cibest method to capture the impact of zakat beneficiaries before and after becoming a member of Zakat Community Development (ZCD) Program in material and spiritual value. The overall analysis shows that zakat has a positive impact on disadvantaged regions development and enhance the quality of life of the community. There is an improvement in the average of mustahik household incomes after becoming a member of ZCD Program. Cibest model demonstrates that material, spiritual, and absolute poverty index decreased by 10, 5, and 6 per cent. Meanwhile, the welfare index is increased by 21 per cent. These findings have significant implications for developing the quality of life in disadvantaged regions in Sijunjung. Therefore, zakat is one of the instruments to change the status of disadvantaged areas to be equivalent to other areas.

Bibliography of publications written by Alwyne (Wyn) Cooper Wheeler (1929–2005)

2009 ◽  
Vol 36 (1) ◽  
pp. 77-99 ◽  
Author(s):  
ANN DATTA
Keyword(s):  
Fish Fauna ◽  
Archaeological Sites ◽  
Changing Environment ◽  
Scientific Papers ◽  
The Status ◽  
Fish Remains ◽  
Important Fish ◽  
Selection Of

The bibliography brings together more than 250 scientific papers and books written by Alwyne (Wyn) Wheeler over fifty years, from 1955–2006. This chronological list shows that from the beginning his research followed three themes: taxonomy of historically important fish collections; identification and distribution of the British and European fish fauna ; the status of British fishes in a changing environment. Until the mid-point in Wyn's career he published regularly on the identification of fish remains in archaeological sites in Britain and Europe. Wyn also wrote under an alias, Allan Cooper, and these have been listed separately. The bibliography concludes with a selection of the regular columns he contributed to angling magazines.

The Selection of Children's Books Translated from Spanish to Galician, Basque and Catalan (1940–80)

2009 ◽  
Vol 2 (2) ◽  
pp. 243-258
Author(s):  
Mónica Domínguez Pérez
Keyword(s):  
Social Economic ◽  
Children’S Literature ◽  
Status Quo ◽  
Intercultural Relations ◽  
Children's Books ◽  
Source Text ◽  
The Status ◽  
Castilian Spanish ◽  
Different Levels ◽  
Selection Of

This study deals with children's literature translated from Castilian Spanish into Galician, Basque and Catalan by a different publisher from that of the source text, between 1940 and 1980, and with the criteria used to choose books for translation during that period. It compares the different literatures within Spain and examines the intersystemic and intercultural relations that the translations reflect. Following the polysystems theory, literature is here conceived as a network of agents of different kinds: authors, publishers, readers, and literary models. Such a network, called a polysystem, is part of a larger social, economic, and cultural network. These extra-literary considerations play an important role in determining the selection of works to be translated. The article suggests that translations can be said to establish transcultural relations, and that they demonstrate different levels of power within a specific interliterary community. It concludes that, while translations may aim to change the pre-existent relationships, frequently they just reflect the status quo.

Storage of primed pelleted sugar beet seed with minimal loss of seed vigour and active ingredients

2019 ◽  
pp. 89-92
Author(s):  
Martijn van Overveld ◽  
Martijn Leijdekkers ◽  
Noud van Swaaij
Keyword(s):  
Sugar Beet ◽  
Storage Temperature ◽  
Seed Storage ◽  
Cold Test ◽  
Test Plant ◽  
Active Ingredients ◽  
Seed Vigour ◽  
Plastic Bag ◽  
Commercial Sugar ◽  
Storage Methods

Different seed storage methods, varying in storage temperature, moisture and/or oxygen content, were applied to commercial sugar beet seed lots from four breeding companies. After storage for 10–11 months, germination of the seed was tested in the laboratory (cold test, 10°C). In addition, the contents of active ingredients (fungicides and insecticide) were analyzed and compared with the initial contents before storage. Based on these results, a selection of the most promising storage methods was made to test plant emergence in a field experiment. This research was performed in 2015/16 and in 2016/17. In both years, two storage treatments outperformed the others: these were storage in a closed jar with the addition of moisture absorber (i.e. silica gel) at room temperature and storage at –18°C in a closed plastic bag. Using these two storage methods, seed vigour and contents of active ingredients were comparable to those in seed that had not been stored for one year. Based on the results from this study, the advice to growers for a successful storage of residual sugar beet seed was adjusted in 2017, after including some practical guidelines and considerations.

scholarly journals Status of the Ex Situ and In Situ Conservation of Brazilian Crop Wild Relatives of Rice, Potato, Sweet Potato, and Finger Millet: Filling the Gaps of Germplasm Collections

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 638
Author(s):  
Marcelo B. Medeiros ◽  
José F. M. Valls ◽  
Aluana G. Abreu ◽  
Gustavo Heiden ◽  
Suelma Ribeiro-Silva ◽  
...  
Keyword(s):  
Finger Millet ◽  
Ex Situ Conservation ◽  
Gap Analysis ◽  
In Situ Conservation ◽  
Germplasm Collection ◽  
Crop Wild Relatives ◽  
Wild Relatives ◽  
Ex Situ ◽  
The Status

This study presents the status of ex situ and in situ conservation for the crop wild relatives of rice, potato, sweet potato, and finger millet in Brazil, and the subsequent germplasm collection expeditions. This research is part of a global initiative entitled “Adapting Agriculture to Climate Change: Collecting, Protecting, and Preparing Crop Wild Relatives” supported by the Global Crop Diversity Trust. Species of the primary, secondary, and tertiary gene pools with occurrences reported in Brazil were included: Oryza alta Swallen, O. grandiglumis (Döll) Prod., O. latifolia Desv., O. glumaepatula Steud., Eleusine tristachya (Lam.) Lam., E. indica (L.) Gaertn., Solanum commersonii Dunal, S. chacoense Bitter, Ipomoea grandifolia (Dammer) O’Donell, I. ramosissima (Poir.) Choisy, I. tiliacea (Willd.) Choisy, I. triloba L., and I. cynanchifolia Meisn. The status of the ex situ and in situ conservation of each taxon was assessed using the gap analysis methodology, and the results were used to plan 16 germplasm collection expeditions. Seeds of the collected material were evaluated for viability, and the protocols for seed germination and cryopreservation were tested. The final conservation score, resulting from the gap analysis and including the average of the ex situ and in situ scores, resulted in a classification of medium priority of conservation for all the species, with the exception of I. grandifolia (high priority). The total accessions collected (174) almost doubled the total accessions of these crop wild relatives incorporated in Embrapa’s ex situ conservation system prior to 2015. In addition, accessions for practically absent species were collected for the ex situ conservation system, such as Ipomoea species, Eleusine indica, and Solanum chacoense. The methods used for dormancy breaking and low temperature conservation for the Oryza, Eleusine, and Ipomoea species were promising for the incorporation of accessions in the respective gene banks. The results show the importance of efforts to collect and conserve ex situ crop wild relatives in Brazil based on previous gap analysis. The complementarity with the in situ strategy also appears to be very promising in the country.

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