Useful Genetic Resources Among the Wild Species of Buckwheat

Author(s):  
Ohmi Ohnishi
2005 ◽  
Vol 53 (4) ◽  
pp. 1231-1236 ◽  
Author(s):  
Michael G. Willits ◽  
Catherine M. Kramer ◽  
Rogerio T. N. Prata ◽  
Vincenzo De Luca ◽  
Brian G. Potter ◽  
...  

Genetics ◽  
1974 ◽  
Vol 78 (1) ◽  
pp. 53-65
Author(s):  
O H Frankel

ABSTRACT The conservation of the crop varieties of traditional agriculture in the centers of genetic diversity is essential to provide genetic resources for plant improvement. These resources are acutely threatened by rapid agricultural development which is essential for the welfare of millions. Methodologies for genetic conservation have been worked out which are both effective and economical. Urgent action is needed to collect and preserve irreplaceable genetic resources. Wild species, increasingly endangered by loss of habitats, will depend on organized protection for their survival. On a long term basis this is feasible only within natural communities in a state of continuing evolution, hence there is an urgent need for exploration and clarification of the genetic principles of conservation. Gene pools of wild species are increasingly needed for various uses, from old and new industries to recreation. But the possibility of a virtual end to the evolution of species of no direct use to man raises questions of responsibility and ethics.


2015 ◽  
Vol 38 (5) ◽  
Author(s):  
Nidhi Verma ◽  
Surendra Singh ◽  
Yasin Jeshima Khan ◽  
Sushil Kumar ◽  
A K Singh

Chickpea is one of the dry edible legumes with best nutritional composition as it does not contain any specific major antinutritional or toxic factors. The seeds have an average of 23% protein and 80% of the crops’s nitrogen requirements are met from symbiotic nitrogen fixation. Chickpea has several desirable agronomic characteristics and it is one of the most heat and drought-resistant crop and suitable for production in low moisture and fertility soils. Chickpea remarkably predominates among other pulse crops in terms of both area and production in India. To meet with the ever increasing demand for new varieties with desirable traits, the genetic resources of chickpea are of immense value for the breeders. Due to rapid changes in the agro-ecological conditions throughout the world, the chickpea genetic resources comprising of wild species, old and primitive cultivars, land races endowed with superior gene complexes are being rapidly eroded. Efforts for augmentation of chickpea genetic resources were undertaken by importing the diverse germplasm from various parts of the world. The exotic introduction in chickpea comprises germplasm with resistance to various biotic and abiotic stresses and its wild species for utilisation in crop improvement programmes in India.


2012 ◽  
pp. 107-111 ◽  
Author(s):  
S. Segura ◽  
A. Rebollar-Alviter ◽  
J. Boyzo-Marín ◽  
M. Hernández-Bello ◽  
J. López-Medina

2013 ◽  
Vol 14 ◽  
pp. 55-64 ◽  
Author(s):  
Salik R Gupta ◽  
Hari B KC ◽  
Uma S Shah ◽  
Dayanand Mandal ◽  
Mukund Bhattarai

To widen the genetic base for further improvement, it is necessary to collect, characterize, evaluate and conserve multi-crops genetic resources. Collection of germplasm from unexplored area was conducted during 2011. A total of 504 samples were collected from Far-Western Development Region of Nepal including a wild species of rice Oryza ruffipogon Griff from Ghoda ghodi tal of Kailali district. A random sampling method was followed for most agricultural crops, where populations were large, and variability was deliberately sought. Sampling was from household stores and from harvested lots, together with individual sampling from fields and markets where appropriate. Greater diversity was found in rice (116) followed by soybean (38), maize (35), beans (28), cowpea (26) and wheat (24). The major achievements of these collections were recognized as the acquisition of additional variability for different multi-crop genetic resources.


1987 ◽  
Vol 23 (3) ◽  
pp. 245-257 ◽  
Author(s):  
D. Astley

SUMMARYThe conservation of genetic resources is discussed in relation to the stages in the evolution of crop plants. Strategies for the collection and conservation of wild species, landraces and advanced cultivars are considered in relation to the pratical needs of plant breeders and other users.


2020 ◽  
Vol 181 (1) ◽  
pp. 128-138 ◽  
Author(s):  
N. P. Loskutova ◽  
T. M. Ozerskaya

The article covers the issues of plant genetic resources mobilization to the VIR collection from the territories of Pakistan, Bangladesh (until 1947, British India), and Bhutan as a result of collection missions, seed requests, and germplasm exchange. Repeated expeditionary surveys of the territories of modern Pakistan and Bangladesh resumed in the postwar period. In total, from 1971 to 1979 three expeditions were launched: in 1971 and 1978 to Pakistan, and in 1979 to Bangladesh. The first and the only expedition was sent to Bhutan in 1989. As a result, 2911 plant samples were collected and delivered to the Vavilov Institute. Among the collected plant materials, the most numerous were samples of groat crops (885), industrial crops (554), vegetables (517), and cereals (463). In addition to direct collecting, the Institute was constantly ordering plant germplasm through mail requests. There was no inflow of germplasm from Bhutan either in the prewar period or from 1946 to 2019. From Pakistan 338 samples were received, mostly through the USSR Ministry of Agriculture. Only 28 accessions were added to the Institute’s collection from Bangladesh. In total, over the entire period of the Institute’s existence, the total amount of germplasm mobilized from Bangladesh, Pakistan and Bhutan amounted to 3277 accessions, representing 130 plant species. Among them there were many landraces, wild species and crops wild relatives.


2011 ◽  
Vol 30 (No. 1) ◽  
pp. 14-42 ◽  
Author(s):  
E. Křístková ◽  
A. Lebeda ◽  
V. Vinter ◽  
O. Blahoušek

Czech collections of Cucumis spp. genetic resources includes 895 accessions ofcultivated C. sativus and C. melo species and 89 accessions of wild species. Knowledge of their morphological and biological features and a correct taxonomical ranging serve a base for successful use of germplasm in modern breeding. List of morphological descriptors consists of 65 descriptors and 20 of them are elucidated by figures. It provides a tool for Cucumis species determination and characterization and for a discrimination of an infraspecific variation. Obtained data can be used for description of genetic resources and also for research purposes.  


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