Inheritance and qualitative analysis of pigments in a barley mutant

1971 ◽  
Vol 49 (1) ◽  
pp. 49-51 ◽  
Author(s):  
Kari Stephansen ◽  
Saul Zalik
Keyword(s):  
Quantitative Analysis ◽  
Hordeum Vulgare ◽  
Qualitative Analysis ◽  
Chlorophyll A ◽  
Recessive Gene ◽  
Single Recessive Gene ◽  
Hordeum Vulgare L ◽  
Chlorophyll Deficiency ◽  
Reciprocal Crosses ◽  
Barley Mutant

Reciprocal crosses were performed with barley (Hordeum vulgare L. cv. ‘Gateway’) and a virescens mutant derived from it. The results from F1 and F2 generations of the crosses showed that chlorophyll deficiency was governed by a single recessive gene. Quantitative analysis of pigment concentrations in normal and mutant shoots of F1 and F2 plants of the same age provided evidence for heterosis in chlorophyll a synthesis.

scholarly journals Influence of salinity stress on PSII in barley (Hordeum vulgare L.) genotypes, probed by chlorophyll-a fluorescence

2021 ◽  
Vol 33 (1) ◽  
pp. 101239
Author(s):  
Muhammad Salim Akhter ◽  
Sibgha Noreen ◽  
Seema Mahmood ◽  
Habib-ur-Rehman Athar ◽  
Muhammad Ashraf ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Chlorophyll A ◽  
Salinity Stress ◽  
Chlorophyll A Fluorescence ◽  
Hordeum Vulgare L

IDENTICAL GENES FOR VIRULENCE IN THE SMUTS USTILAGO HORDEI AND U. NIGRA, AND INHERITANCE OF VIRULENCE ON THE BARLEY CULTIVARS KEYSTONE AND CONQUEST

1974 ◽  
Vol 54 (2) ◽  
pp. 253-257 ◽  
Author(s):  
R. A. FULLERTON ◽  
J. NIELSEN
Keyword(s):  
Hordeum Vulgare ◽  
Virulence Genes ◽  
Recessive Gene ◽  
Breeding Program ◽  
Hordeum Vulgare L ◽  
Barley Cultivars ◽  
Ustilago Hordei

Virulence of Ustilago hordei (Pers.) Lagerh. and U. nigra Tapke on the barley (Hordeum vulgare L.) cultivars Keystone and Conquest was studied. One recessive gene or linked genes, the same in both smut species, appeared to confer virulence on both cultivars. Earlier investigators had found identical virulence genes in both species of smut for the cultivars Excelsior, Lion, Pannier and Trebi. Therefore, testing for resistance or susceptibility in a breeding program could be done with a strain of only one of the species.

Genetic studies on net blotch resistance in a barley cross

1996 ◽  
Vol 76 (4) ◽  
pp. 715-719 ◽  
Author(s):  
K.M. Ho ◽  
T.M. Choo ◽  
A. Tekauz ◽  
R.A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Dominant Gene ◽  
Recessive Gene ◽  
Pyrenophora Teres ◽  
Chromosome 2 ◽  
Net Blotch ◽  
Hordeum Vulgare L ◽  
Key Words Barley ◽  
Recessive Genes ◽  
Selection For

An investigation was initiated to study the genetics of resistance to three isolates of Pyrenophora teres (WRS102, WRS858, and WRS857), which have been routinely used for screening for net blotch resistance in Canada. The F1, F2, and doubled-haploid lines were derived from a Leger/CI9831 cross of barley (Hordeum vulgare L.). These materials, along with their parents, were inoculated with each of the three isolates at the three-leaf stage in growth chambers. Results showed that resistance to WRS102 was controlled by three recessive genes, resistance to WRS858 by one recessive gene, and resistance to WRS857 by either one dominant gene or two complementary genes. One of the WRS102-resistance genes appeared to be on chromosome 2 and another linked to the WRS858-resistance gene. Resistance to these three isolates was not associated with awn type, esterase 1, and esterase 5. Selection for resistance to WRS102 and WRS858 would be more effective than selection for resistance to WRS857 in a conventional breeding program. Key words: Barley, Hordeum vulgare, net blotch, Pyrenophora teres, haploids

PROGRESSIVE VEINBANDING—A NEW MUTATION IN NICOTIANA TABACUM L.

1968 ◽  
Vol 10 (2) ◽  
pp. 232-234
Author(s):  
Bronius Povilaitis ◽  
D. R. Cameron
Keyword(s):  
Nicotiana Tabacum ◽  
Recessive Gene ◽  
Single Recessive Gene ◽  
Normal Allele ◽  
New Mutation ◽  
Mutant Type ◽  
Complete Dominance ◽  
Chlorophyll Deficiency ◽  
Monogenic Inheritance ◽  
Nicotiana Tabacum L

A new mutation for chlorophyll-deficiency in Nicotiana tabacum L., called progressive veinbanding, was found in the field planting of the flue-cured tobacco variety Hicks Broadleaf. The mutant follows monogenic inheritance of a single recessive gene upon which the normal allele exhibits complete dominance. There was a definite association of the mutant type with the M—chromosome of the sylvestris genome in tests against the monosomic series.

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