scholarly journals Comparison of Genetic Diversity between Nuña and and Other Andean bean (Phaseolus vulgaris) Populations

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 544C-544
Author(s):  
James Nienhuis ◽  
Paul Skroch ◽  
Steve Beebe
Keyword(s):  
Genetic Diversity ◽  
Energy Efficiency ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Core Collection ◽  
Rapd Markers ◽  
Practical Consideration ◽  
Common Beans ◽  
Germplasm Bank ◽  
Wide Range

Nuñas are a type of common bean (Phaseolus vulgaris) that possess the unusual characteristic of popping or expanding their cotyledonary tissue when heated. Numerous landraces of nuña beans were domesticated in the Andean region of South America (Peru, Bolivia, and Ecuador) and have been grown and consumed in this region since antiquity. The practical consideration in the domestication of nuñas in the high Andes was likely due to the greater energy efficiency in cooking toasted vs. boiled seeds.The Phaseolus germplasm bank at CIAT (Centro Internacional de Agricultura Tropical) has developed a core collection of Andean beans that includes numerous nuña landraces. Based on the wide range of phaseolin types observed among nuña landraces, it has been hypothesized that nuñas may represent a greater source of genetic diversity compared to other landraces and cultivars of common bean. Eighty nuña accessions and 120 nonpopping common bean accessions were randomly sampled from the CIAT Andean germplasm core collection. The 200 accessions were characterized for 140 mapped RAPD markers. The objectives of our research were to 1) understand the genetic structure of nuña bean accessions relative to other Andean common beans, and 2) to measure the genetic distance and genetic diversity between nuña and other Andean bean populations.

Genetic diversity of some surviving on-farm Italian common bean (Phaseolus vulgaris L.) landraces

2005 ◽  
Vol 124 (6) ◽  
pp. 576-581 ◽  
Author(s):  
L. Lioi ◽  
A. R. Piergiovanni ◽  
D. Pignone ◽  
S. Puglisi ◽  
M. Santantonio ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Phaseolus Vulgaris L ◽  
On Farm

scholarly journals The genetic diversity and population structure of common bean (Phaseolus vulgaris L) germplasm in Uganda

2014 ◽  
Vol 13 (29) ◽  
pp. 2935-2949 ◽  
Author(s):  
Okii Dennis ◽  
Tukamuhabwa Phinehas ◽  
Kami James ◽  
Namayanja Annet ◽  
Paparu Pamela ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Phaseolus Vulgaris L

scholarly journals Genetic diversity of common bean accessions in the germplasm bank of the Instituto Agronômico - IAC

2005 ◽  
Vol 5 (1) ◽  
pp. 1-9 ◽  
Author(s):  
A.F. Chiorato ◽  
S.A.M. Carbonell ◽  
C.A. Colombo ◽  
L.A.S. Dias ◽  
M.F. Ito
Keyword(s):  
Genetic Diversity ◽  
Common Bean ◽  
Germplasm Bank

Characterization of Colletotrichum lindemuthianum Races in Zambia and Evaluation of the CIAT Phaseolus Core Collection for Resistance to Anthracnose

Plant Disease ◽  
2021 ◽  
Author(s):  
Kelvin Kamfwa ◽  
Paul Gepts ◽  
Swivia Hamabwe ◽  
Zombe Kapata Nalupya ◽  
Chikoti Mukuma ◽  
...  
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Core Collection ◽  
Durable Resistance ◽  
Colletotrichum Lindemuthianum ◽  
Sources Of Resistance ◽  
Runner Bean ◽  
Causal Pathogen ◽  
Scarlet Runner Bean

Colletotrichum lindemuthianum, the causal pathogen of common bean (Phaseolus vulgaris) anthracnose, is highly variable. Therefore, understanding its race structure and identification of new sources of resistance is necessary for the development of varieties with durable resistance. The objectives of this study were (i) to characterize isolates of C. lindemuthianum collected from three major bean-growing regions in Zambia, and (ii) evaluate the CIAT Phaseolus core collection for resistance to C. lindemuthianum races 37, 73, and 566, and a blend of 20 races. Isolates collected from three major bean-growing districts in Zambia, namely Mporokoso, Mpika, and Mbala, were characterized as race 37, 73, and 566, respectively. A subset of the CIAT core collection comprised of 885 accessions of common bean, 13 accessions of scarlet runner bean (P. coccineus), and 11 accessions of year bean (P. dumosus) were evaluated for resistance to races 37, 73 and 566, and a blend of 20 races in a greenhouse at University of Zambia, Lusaka, Zambia. A total of 72%, 66%, 48% and 9% of P. vulgaris accessions evaluated were highly resistant to races 37, 73, 566 and a blend of 20 races, respectively. Also, accessions of P. coccineus and P. dumosus, highly resistant to races 37, 73 and 566, were identified. Only eight of the 331 P. vulgaris accessions were highly resistant to all three individual races (37, 73, and 566) and to a blend of 20 races. These eight accessions constitute a valuable breeding resource for developing varieties with durable resistance to C. lindemuthianum.

scholarly journals Is the USDA core collection of common bean representative of genetic diversity of the species, as assessed by SNP diversity?

Crop Science ◽  
2020 ◽  
Vol 60 (3) ◽  
pp. 1398-1414 ◽  
Author(s):  
Saarah Kuzay ◽  
Paige Hamilton‐Conaty ◽  
Antonia Palkovic ◽  
Paul Gepts
Keyword(s):  
Genetic Diversity ◽  
Common Bean ◽  
Core Collection

scholarly journals Evaluation of the genetic variability in bamboo using RAPD markers

2011 ◽  
Vol 49 (No. 1) ◽  
pp. 24-28 ◽  
Author(s):  
S. Nayak ◽  
G.R. Rout ◽  
P. Das
Keyword(s):  
Genetic Diversity ◽  
Rapd Markers ◽  
Growth Habit ◽  
Floral Morphology ◽  
Genetic Relationships ◽  
Species Cluster ◽  
Wide Range ◽  
Bambusa Vulgaris ◽  
Bambusa Ventricosa ◽  
Taxonomic Studies

Classical taxonomic studies of the bamboos are based on floral morphology and growth habit, which can cause problems in identification due to erratic flowering. Identification and genetic relationships in 12 species of bamboo were investigated using random amplified polymorphic DNAs (RAPD) technique. Analysis started by using thirty 10-mer primers that allowed us to distinguish 12 species and to select a reduced set of primers. The selected primers were used for identification and for establishing a profiling system to estimate genetic diversity. A total of one hundred thirty seven distinct polymorphic DNA fragments (bands), ranging from 0.4–3.3 kb were amplified by using 10 selected primers. The genetic similar analysis was conducted based on presence or absence of bands, which revealed a wide range of variability among the species. Cluster analysis clearly showed two major clusters belonging to 12 species of bamboo. Two major clusters were further divided into three minor clusters. The species of Bambusa vulgaris and Bambusa vulgaris var. striata were the most closely related and formed the first minor cluster along with Bambusa ventricosa. The variety of Bambusa multiplex var. Silver stripe and Bambusa multiplex were very closely related and there was no variation with Bambusa ventricosa. Another minor cluster was obtained between Bambusa arundinacea, Cephalostachyum pergracil and Bambusa balcooa. The RAPD technique has the potential for use in species identification and genetic relationships between taxa and species of bamboo for breeding program.

Sign in / Sign up

Export Citation Format

Share Document