Phylogenomic analysis points to a South American origin of Manihot and illuminates the primary gene pool of cassava

2021 ◽  
Author(s):  
Marcelo F. Simon ◽  
J. Moises F Mendoza ◽  
Hsiao‐Lei Liu ◽  
Márcio Lacerda Lopes Martins ◽  
Sergei V. Drovetski ◽  
...  
Keyword(s):  
Gene Pool ◽  
Phylogenomic Analysis ◽  
South American ◽  
Primary Gene Pool ◽  
South American Origin ◽  
Primary Gene

Synthetic Hexaploids: Harnessing Species of the Primary Gene Pool for Wheat Improvement

2013 ◽  
pp. 35-122 ◽  
Author(s):  
Francis C. Ogbonnaya ◽  
Osman Abdalla ◽  
Abdul Mujeeb-Kazi ◽  
Alvina G. Kazi ◽  
Steven S. Xu ◽  
...  
Keyword(s):  
Gene Pool ◽  
Wheat Improvement ◽  
Primary Gene Pool ◽  
Synthetic Hexaploids ◽  
Primary Gene

scholarly journals Diversification of primary gene pool through introgression of resistance to foliar diseases from synthetic amphidiploids to cultivated groundnut (Arachis hypogaea L.)

2014 ◽  
Vol 2 (2-3) ◽  
pp. 110-119 ◽  
Author(s):  
Varsha Kumari ◽  
M.V.C. Gowda ◽  
Vinod Tasiwal ◽  
Manish K. Pandey ◽  
Ramesh S. Bhat ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Gene Pool ◽  
Foliar Diseases ◽  
Arachis Hypogaea L ◽  
Primary Gene Pool ◽  
Primary Gene

The wild gene pool of globe artichoke

2015 ◽  
Vol 62 (1-2) ◽  
pp. 33-38 ◽  
Author(s):  
Aaron Rottenberg
Keyword(s):  
Molecular Markers ◽  
Gene Pool ◽  
Mediterranean Basin ◽  
Molecular Genetic ◽  
Globe Artichoke ◽  
Cynara Cardunculus ◽  
Primary Gene Pool ◽  
The Mediterranean ◽  
Primary Gene ◽  
The Mediterranean Basin

Globe artichoke is an important vegetable of the Mediterranean basin. Its primary gene pool (GP1) consists of wild types ofCynara cardunculus. Crosses between the wild types and the cultivars (artichoke and cardoon) are fully fertile. In accordance, analyses of molecular markers revealed high genetic identity between the wild types and the cultivars. Hence, all these taxa are grouped together as conspecific varieties withinC.cardunculus. Several other wildCynaraspecies thrive in the Mediterranean basin. Of these,C. syriaca,C. algarbiensis,C. baeticaandC. humiliswere tested and found to be part of the secondary gene pool (GP2) of artichoke, as they were rather difficult to cross with either wild or cultivatedC. cardunculusand the few hybrids obtained were semi-sterile. In accordance, molecular genetic markers suggest that these wildCynaraspecies indeed diverged fromC. cardunculus. Four additionalCynaraspecies thrive in the Mediterranean basin, namelyC. cornigera,C. cyrenaica,C. tournefortiiandC. makrisii. There is no information on the crossability of these four species with artichoke, but molecular markers suggest that they may also belong to the secondary gene pool of the crop. Considering some attractive, variable characteristics of each of the GP2 species, such as earliness, albinism, dwarfism and diverse flavors, these wild species might be of great interest for artichoke breeders.

Cross Fertility of Australian Accessions of Wild Mungbean (Vigna radiata ssp. sublobata) with Green Gram (V. radiata ssp. radiata) and Black Gram (V. mungo)

1999 ◽  
Vol 47 (4) ◽  
pp. 601 ◽  
Author(s):  
C. J. Lambrides ◽  
A. T. James ◽  
R. J. Lawn ◽  
R. W. Williams
Keyword(s):  
Vigna Radiata ◽  
Gene Pool ◽  
Seed Set ◽  
Green Gram ◽  
Black Gram ◽  
Indigenous Australian ◽  
Poor Seed ◽  
Primary Gene Pool ◽  
Asiatic Vigna ◽  
Primary Gene

The position of Australian accessions of wild mungbean (Vigna radiata ssp. sublobata) in the Asiatic Vigna gene pool was examined by assessing their cross fertility with the green gram cultigen (Vigna radiata ssp. radiata) and black gram (Vigna mungo). No difficulties were encountered in obtaining F 1 and backcross seed in crosses with green gram. The hybrid progenies were vegetatively vigorous and fully fertile. Inheritance of traits appeared normal and, where direct comparisons were possible, consistent with crosses within the cultigen. Inheritance of a new seed mottling gene is presented and several linked traits were found. Crosses with black gram proved difficult to achieve, and the resulting hybrid seed showed varying degrees of viability. Individuals that germinated were weak, and if they survived to flower, possessed low pollen fertility and poor seed set. It was concluded that indigenous Australian accessions of wild mungbean belong to the primary gene pool of Vigna radiata.

Population structure of the primary gene pool of Oryza sativa in Thailand

2012 ◽  
Vol 60 (1) ◽  
pp. 335-353 ◽  
Author(s):  
Tonapha Pusadee ◽  
Barbara A. Schaal ◽  
Benjavan Rerkasem ◽  
Sansanee Jamjod
Keyword(s):  
Population Structure ◽  
Oryza Sativa ◽  
Gene Pool ◽  
Primary Gene Pool ◽  
Primary Gene

Screening the primary gene pool of field pea (Pisum sativum L. subsp. sativum) in Ethiopia for resistance against pea weevil (Bruchus pisorum L.)

2014 ◽  
Vol 62 (4) ◽  
pp. 525-538 ◽  
Author(s):  
Abel Teshome ◽  
Esayas Mendesil ◽  
Mulatu Geleta ◽  
Derege Andargie ◽  
Peter Anderson ◽  
...  
Keyword(s):  
Pisum Sativum ◽  
Gene Pool ◽  
Field Pea ◽  
Pisum Sativum L ◽  
Primary Gene Pool ◽  
Primary Gene ◽  
Bruchus Pisorum

Assessment of genome organization among diploid species (2n = 2x = 14) belonging to primary and tertiary gene pools of pearl millet using fluorescent in situ hybridization with rDNA probes

Genome ◽  
1996 ◽  
Vol 39 (4) ◽  
pp. 680-687 ◽  
Author(s):  
E. Martel ◽  
A. Ricroch ◽  
A. Sarr
Keyword(s):  
In Situ Hybridization ◽  
Pearl Millet ◽  
Gene Pool ◽  
Chromosome Pair ◽  
Genomic Organization ◽  
Gene Pools ◽  
Interphase Cell ◽  
Primary Gene Pool ◽  
Primary Gene

Two contrasting forms of Pennisetum belonging to the primary and tertiary gene pools were assessed for genomic organization using in situ hybridization with rDNA probes (18S–5.8S–25S and 5S) on metaphase and interphase cell nuclei. The primary gene pool is represented by diploid (2n = 2x = 14) cultivated pearl millet (Pennisetum glaucum) and its close wild relatives (Pennisetum violaceum and Pennisetum mollissimum). Pennisetum schweinfurthii (2n = 2x = 14) was taken as representative of the tertiary gene pool, owing to its diploid status and its similarity to the accessions of the primary gene pool in chromosome number. Using the 18S–5.8S–25S probe, we observed two sites of distribution in the four species but at different locations. Within the primary gene pool, signals were detected on the telomeric part of the short arm of chromosome pair VI and at the nucleolar organizing region (NOR) of the satellited chromosome pair (VII). Signals were observed at the NOR of the two satellited chromosome pairs (I and IV) of P. schweinfurthii. The 5S probe was detected at the telomeric part of the short arm of metacentric chromosome pair IV of the three species of the primary gene pool, while it occured in an intercalary position on the short arm of chromosome pair II of P. schweinfurthii. These results showed a chromosomal similarity of rDNA sequence locations within the primary gene pool and are in agreement with the high genetic identity between wild and cultivated forms of pearl millet previously revealed by allozyme studies. Implications of genomic organization for genetic resource enhancement are discussed. Key words : Pennisetum, in situ hybridization, rDNA probes, genomic organization.

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