scholarly journals A molecular marker for in situ genetic resource conservation of Capsicum annuum var. acuminatum (Solanaceae)

2013 ◽  
Vol 12 (3) ◽  
pp. 3529-3539
Author(s):  
N. Kaewdoungdee ◽  
T. Tanee
Keyword(s):  
Molecular Marker ◽  
Capsicum Annuum ◽  
Genetic Resource ◽  
Resource Conservation ◽  
Genetic Resource Conservation

Implications for in situ genetic resource conservation from the ecogeographical distribution of rice genetic diversity in Maritime Guinea

2007 ◽  
Vol 5 (01) ◽  
pp. 45-54 ◽  
Author(s):  
M. B. Barry ◽  
J. L. Pham ◽  
J. L. Noyer ◽  
B. Courtois ◽  
C. Billot ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Differentiation ◽  
Genetic Resource ◽  
Upland Rice ◽  
Allelic Diversity ◽  
Farming Systems ◽  
Resource Conservation ◽  
Asian Rice ◽  
Genetic Resource Conservation

Genetic resource conservation is widely acknowledged as important. The implementation of conservation requires an insight into the distribution of genetic diversity at the scale of small regions or villages. We present an analysis of rice diversity at such a scale, in a region where traditional farming still prevails. Regional allelic diversity was comparable to that noted worldwide for Asian rice (Oryza sativa), but not as high for African rice (O. glaberrima). Each village pooled more than half of the regional allelic diversity. Genetic differentiation between varieties from the same village accounted for 70% of the regional variation. The differentiation associated with lowland and upland rice-growing ecosystems was 23%, while that associated with differences between villages within the same ecosystem was 7%. In the upland ecosystem, geographical distance had a significant effect on theFSTbetween pairs of villages. In the lowland ecosystem, differences in soil salinity between villages affectedFST. Genetic diversity within a single village may have up to three components: an ancientglaberrimacomponent shared with neighbouring or ethnically related villages; a relatively ancientsativacomponent which was hardly or no longer shared with other villages due to local differentiation; and a recently introducedsativacomponent shared with other villages. Genetic resource conservation could be achieved, in terms of allelic diversity, through stratified sampling according to described genetic differentiation factors, whereas current farming systems must be preserved to ensure conservation of the diversity of allelic associations.

scholarly journals Social Valuation of Genebank Activities: Assessing Public Demand for Genetic Resource Conservation in the Czech Republic

2018 ◽  
Vol 10 (11) ◽  
pp. 3997 ◽  
Author(s):  
Nicholas Tyack ◽  
Milan Ščasný
Keyword(s):  
Genetic Resource ◽  
Choice Model ◽  
Resource Conservation ◽  
Past Century ◽  
Welfare Benefits ◽  
Crop Varieties ◽  
Contingent Valuation Survey ◽  
Genetic Resource Conservation ◽  
Using Data ◽  
South Moravia

The use of diverse genetic resources to breed improved crop varieties has been a key driver of agricultural productivity improvements in the past century. At the same time, the adoption of modern varieties has contributed to substantial loss of traditional varieties. In this analysis, we estimate the social value provided by several proposed crop diversity conservation programs to be carried out by the Czech genebank system. We use a double-bounded dichotomous choice model to estimate the willingness-to-pay (WTP) for conserving additional crop varieties in the genebank for ten years using data collected through an online contingent valuation survey administered to a sample representative of the general Czech population (1037 respondents) and a smaller sub-sample representative of the agricultural region of South Moravia (500 respondents). Mean WTP was found to be about $9 for both the Czech and S. Moravian sub-samples, corresponding to country-wide benefits of ~$68 million. These benefits increase by 6–7% for every ten varieties conserved, implying total welfare benefits of ~$84 million for a program conserving the maximum number of 35 additional crop varieties offered in the experiment. The study illustrates an empirical approach of potential value for policymakers responsible for determining funding levels for genetic resource conservation.

Genetic resource conservation of the endemic genus Argyranthemum Sch. Bip. (Asteraceae: Anthemideae) in the Macaronesian Islands

1996 ◽  
Vol 43 (1) ◽  
pp. 33-39 ◽  
Author(s):  
J. Francisco-Ortega ◽  
A. Santos-Guerra ◽  
R. Mosa-Coello ◽  
E. Gonz�lez-Feria ◽  
D. J. Crawford
Keyword(s):  
Genetic Resource ◽  
Resource Conservation ◽  
Endemic Genus ◽  
Macaronesian Islands ◽  
Genetic Resource Conservation

scholarly journals The Flora of Vascular Plants in Mt. Gariwang Protected Area for Forest Genetic Resource Conservation, South Korea

2013 ◽  
Vol 26 (5) ◽  
pp. 566-588 ◽  
Author(s):  
Jun Gi Byun ◽  
Jeong Won Jang ◽  
Jong Cheol Yang ◽  
You Mi Lee ◽  
Su Young Jung ◽  
...  
Keyword(s):  
South Korea ◽  
Protected Area ◽  
Vascular Plants ◽  
Genetic Resource ◽  
Resource Conservation ◽  
Forest Genetic ◽  
Genetic Resource Conservation

Role of new and current methods in semen technology for genetic resource conservation

2004 ◽  
Vol 30 ◽  
pp. 191-205
Author(s):  
W.V. Holt ◽  
P.F. Watson
Keyword(s):  
Reproductive Tract ◽  
Genetic Resource ◽  
Resource Conservation ◽  
Female Reproductive Tract ◽  
Practical Implementation ◽  
New Information ◽  
Frozen Semen ◽  
Genetic Resource Conservation

AbstractThe establishment of repositories of frozen semen, for the conservation of agricultural genetic resources, is not a simple matter of collecting and freezing semen in the hope that one day it will be suitable for use in an artificial insemination procedure. Important genetic issues need to be considered; for example, how many samples should be stored and from how many individuals? Aside from these, many biological and logistic issues must be considered. Cryopreservation technology does not work equally well in all species, often because of anatomical differences in the female reproductive tract leading to significant variability in the number of spermatozoa needed in order to achieve an acceptable conception rate. Moreover, spermatozoa from different species are not equally susceptible to cryoinjury. However, it is also emerging that semen samples from individuals within a species are also of different quality; several studies have revealed that these differences reflect the quality of DNA within the spermatozoon itself and also the efficacy of biochemical functions, including metabolic and signalling systems, within individual cells. As new possibilities to select spermatozoa for insemination arise, especially the use of flowsorting for gender selection, these issues may become more significant. In this article we interpret the way in which some of this new information may impact upon the practical implementation of genetic resource conservation.

Sign in / Sign up

Export Citation Format

Share Document