Production, morphology, and cytogenetic analysis of Elymus caninus (Agropyron caninum) x Triticum aestivum F1 hybrids and backcross-1 derivatives

1986 ◽  
Vol 71 (5) ◽  
pp. 750-756 ◽  
Author(s):  
H. C. Sharma ◽  
P. S. Baenziger
Keyword(s):  
Triticum Aestivum ◽  
Cytogenetic Analysis ◽  
F1 Hybrids ◽  
Elymus Caninus ◽  
Agropyron Caninum

scholarly journals The protected tree Dimorphandra wilsonii (Fabaceae) is a population of inter-specific hybrids: recommendations for conservation in the Brazilian Cerrado/Atlantic Forest ecotone

2020 ◽  
Vol 126 (1) ◽  
pp. 191-203
Author(s):  
André Carneiro Muniz ◽  
José Pires Lemos-Filho ◽  
Helena Augusta Souza ◽  
Rafaela Cabral Marinho ◽  
Renata Santiago Buzatti ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Cytogenetic Analysis ◽  
Taxonomic Status ◽  
Conservation Strategies ◽  
F1 Hybrids ◽  
Individual Level ◽  
Intermediate Phenotypes ◽  
Eastern Brazil ◽  
Heterozygosity Excess ◽  
The Individual

Abstract Backgrounds and Aims Dimorphandra wilsonii Rizzini, a critically endangered and protected tree, has a restricted distribution in the ecotone between the Cerrado and the Atlantic Forest in south-eastern Brazil. In this area, it co-occurs with D. mollis Benth., a common tree from the Cerrado, and D. exaltata Schott., a rare tree from the Atlantic Forest. Previous studies of D. wilsonii indicated heterozygosity excess at the individual level. Field observation of some intermediate phenotypes between D. wilsonii and both congeners suggests hybridization of D. wilsonii with D. mollis and/or D. exaltata. Here, we tested the hypothesis that D. wilsonii may have originated from hybridization between D. exaltata and D. mollis. We also performed cytogenetic analysis to examine if the heterozygosity excess could be explained by polyploidy in D. wilsonii. Methods We evaluated the genetic diversity and population structure of D. wilsonii using 11 nuclear simple sequence repeats (SSRs) genotyped in 152 individuals sampled across the taxon’s range. We performed comparative genetic analyses using overlapping SSR markers between D. wilsonii and previously published SSR data in D. mollis and D. exaltata to subsequently perform a series of allelic comparisons, multivariate and Bayesian analysis. Key Results Our results suggest that D. wilsonii individuals are most likely to correspond to F1 hybrids between D. exaltata and D. mollis. Cytogenetic analysis indicated that D. wilsonii is diploid with the same chromosome number as D. mollis (2n = 2x = 28). Conclusions Our study raises questions about the taxonomic status and the evolutionary future of D. wilsonii. We suggest that the conservation and management strategy for D. wilsonii should be revised and that it should take into account both parental Dimorphandra species in the ecotone, with special emphasis on the threatened D. exaltata. Finally, this study highlights the value of genetic information for the design of conservation strategies.

Molecular cytogenetic analysis of DNA sequences with flanking telomeric repeats in Triticum aestivum cv. Begra

Genome ◽  
2001 ◽  
Vol 44 (1) ◽  
pp. 133-136 ◽  
Author(s):  
Marta Dobrzanska ◽  
Elzbieta Kraszewska ◽  
Maria Bucholc ◽  
Glyn Jenkins
Keyword(s):  
Triticum Aestivum ◽  
Dna Sequences ◽  
Cytogenetic Analysis ◽  
Telomeric Repeats ◽  
Molecular Cytogenetic

Cytogenetics of Hybrids Among Perennial Species of Glycine Subgenus Glycine

1979 ◽  
Vol 27 (6) ◽  
pp. 713 ◽  
Author(s):  
E Putievsky ◽  
P Broue
Keyword(s):  
Cytogenetic Analysis ◽  
Diploid Species ◽  
The Other ◽  
F1 Hybrids ◽  
Pollen Stainability ◽  
Perennial Species ◽  
Tetraploid Form ◽  
Other Hand ◽  
Self Fertilization

A cytogenetic analysis based on F1 hybrids of some of the perennial species of Glycine subgenus Glycine Verdc. shows that G. clandestina and G. canescens are closely related and further, that either one of these diploid species could have provided one genome for the tetraploid form of G. tomentella. On the other hand, it appears that G. falcata and G. tabacina are distinctive species which are not closely related to the other three species. The tetraploid form of G. tomentella is genetically heterogeneous and crosses between certain types yield F1s with low pollen stainability which fail to set seed under conditions of self-fertilization.

scholarly journals Effect of Alien Cytoplasms on Meiosis in the F1 Hybrids between Alloplasmic Lines of Triticum aestivum cv. Chinese Spring and Rye or Triticale.

CYTOLOGIA ◽  
1999 ◽  
Vol 64 (3) ◽  
pp. 285-291 ◽  
Author(s):  
Wang Tongchang ◽  
Liu Weihua ◽  
He Congfen ◽  
Zhang Guiyou ◽  
Shi Rui ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Chinese Spring ◽  
F1 Hybrids ◽  
Alloplasmic Lines

Cytogenetic analysis of structural rearrangements in three varieties of common wheat, Triticum aestivum

1987 ◽  
Vol 73 (5) ◽  
pp. 635-645 ◽  
Author(s):  
W. Lange ◽  
I. Linde-Laursen ◽  
J. Larsen ◽  
A. Ljungberg ◽  
S. Ellerström
Keyword(s):  
Triticum Aestivum ◽  
Common Wheat ◽  
Cytogenetic Analysis ◽  
Structural Rearrangements

Analysis of disease resistance and quality characters of F1 hybrids of crosses between wheat (Triticum aestivum) and spelt (Triticum spelta)

Euphytica ◽  
1994 ◽  
Vol 75 (1-2) ◽  
pp. 105-110 ◽  
Author(s):  
J. E. Schmid ◽  
M. Winzeler ◽  
H. Winzeler
Keyword(s):  
Triticum Aestivum ◽  
Disease Resistance ◽  
F1 Hybrids ◽  
Triticum Spelta

Assessment of the combining ability and authentication of F1 hybrids using SSR markers in wheat (Triticum aestivum L.)

2011 ◽  
Vol 5 (2) ◽  
pp. 135-140 ◽  
Author(s):  
Muhammad Shahzad Ahmed ◽  
Ihsan Khaliq ◽  
Jehanzeb Farooq ◽  
Shahid Iqbal Awan ◽  
Nisar Ahmed ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Ssr Markers ◽  
Combining Ability ◽  
Triticum Aestivum L ◽  
F1 Hybrids
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