Genetic control of β-amylase isozymes in common or hexaploid wheat (Triticum aestivum)

1982 ◽  
Vol 60 (9) ◽  
pp. 1653-1657 ◽  
Author(s):  
P. Joudrier ◽  
G. Gobin
Keyword(s):  
Triticum Aestivum ◽  
Genetic Control ◽  
Hexaploid Wheat ◽  
Linkage Study ◽  
Chromosome 4 ◽  
Reciprocal Crosses

Examination of seeds of parents and F1 and F2 hybrids of the crosses 'Vilmorin 23' × '61.5.3.2.' and 'Fournil' × 'Yaktana' and the reciprocal crosses showed that the C1, C2, and C3 components of the β-amylase zymogram, determined by polyacrylamide slab electrophoresis are each controlled by a pair of alleles. From the results of the second cross 'Fournil' × 'Yaktana,' a linkage study between these genes was undertaken. From previous work, we know that components C1 are located on chromosome 4 Aβ and C3 on chromosome 4 DL. We conclude that genes for C1 and C2 components are tightly linked on the same chromosome (4 Aβ).

Genetic control of some polymeric glutenin fractions in hexaploid wheat (Triticum aestivum)

1996 ◽  
Vol 115 (6) ◽  
pp. 514-516
Author(s):  
L. El Haddad ◽  
A. Sarrafi ◽  
J. L. Fabre ◽  
T. Aussenac
Keyword(s):  
Triticum Aestivum ◽  
Genetic Control ◽  
Hexaploid Wheat

Developmental responses in tetraploid wheat (Triticum turgidum)

1983 ◽  
Vol 61 (10) ◽  
pp. 2539-2545 ◽  
Author(s):  
R. G. Flood ◽  
G. M. Halloran
Keyword(s):  
Triticum Aestivum ◽  
Genetic Control ◽  
Hexaploid Wheat ◽  
Triticum Turgidum ◽  
Tetraploid Wheat ◽  
Photoperiod Sensitivity ◽  
Vernalization Response ◽  
Spikelet Number ◽  
Photoperiod Insensitivity ◽  
Developmental Responses

Nineteen lines of tetraploid wheat (Triticum turgidum) were examined for the presence and strength of developmental responses in the field during 1980 and 1981 and compared with lines of known vernalization and photoperiod responses in the hexaploid wheat (Triticum aestivum). Five of them had stronger vernalization responses than the winter habit hexaploid line cv. Triple Dirk C. Strong vernalization response of the tetraploids was usually associated with photoperiod insensitivity and vice versa although several lines had a combination of high photoperiod sensitivity and moderate levels of vernalization response. Compared with hexaploids the tetraploids exhibited much more variation in spikelet number per head following vernalization treatment which was less marked in some of the domesticated lines. Speculations are made on the genetic control of vernalization response in tetraploid wheat and the possible significance of greater stability in the expression of spikelet number in the evolution of wheat.

Anther culture of wheat (Triticum aestivum L.) F1's and their reciprocal crosses

1982 ◽  
Vol 62 (2) ◽  
pp. 155-159 ◽  
Author(s):  
W. P. Bullock ◽  
P. S. Baenziger ◽  
G. W. Schaeffer ◽  
P. J. Bottino
Keyword(s):  
Triticum Aestivum ◽  
Anther Culture ◽  
Triticum Aestivum L ◽  
Reciprocal Crosses

Allelic variation, sequence determination and microsatellite screening at the XGWM261 locus in Chinese hexaploid wheat (Triticum aestivum) varieties

Euphytica ◽  
2005 ◽  
Vol 145 (1-2) ◽  
pp. 103-112 ◽  
Author(s):  
Yong Liu ◽  
Dongcheng Liu ◽  
Haiying Zhang ◽  
Jing Wang ◽  
Jiazhu Sun ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Hexaploid Wheat ◽  
Allelic Variation ◽  
Sequence Determination

The biology and ecology of hexaploid wheat (Triticum aestivum L.) and its implications for trait confinement

2008 ◽  
Vol 88 (5) ◽  
pp. 997-1013 ◽  
Author(s):  
C. J. Willenborg ◽  
R. C. Van Acker
Keyword(s):  
Triticum Aestivum ◽  
Gene Flow ◽  
Hexaploid Wheat ◽  
Triticum Turgidum ◽  
Cropping Systems ◽  
Pollen Viability ◽  
Triticum Aestivum L ◽  
Genetically Engineered ◽  
Wide Range ◽  
Trait Confinement

This review summarizes the biological and ecological factors of hexaploid wheat (Triticum aestivum L.) that contribute to trait movement including the ability to volunteer, germination and establishment characteristics, breeding system, pollen movement, and hybridization potential. Although wheat has a short-lived seedbank with a wide range of temperature and moisture requirements for germination and no evidence of secondary dormancy, volunteer wheat populations are increasing in relative abundance and some level of seed persistence in the soil has been observed. Hexaploid wheat is predominantly self-pollinating with cleistogamous flowers and pollen viability under optimal conditions of only 0.5 h, yet observations indicate that pollen-mediated gene flow can and will occur at distances up to 3 km and is highly dependent on prevailing wind patterns. Hybridization with wild relatives such as A. cylindrica Host., Secale cereale L., and Triticum turgidum L. is a serious concern in regions where these species grow in field margins and unmanaged lands, regardless of which genome the transgene is located on. More research is needed to determine the long-term population dynamics of volunteer wheat populations before conclusions can be drawn with regard to their role in trait movement. Seed movement has the potential to create adventitious presence (AP) on a larger scale than pollen, and studies tracing the movement of wheat seed in the grain handling system are needed. Finally, the development of mechanistic models that predict landscape-level trait movement are required to identify transgene escape routes and critical points for gene containment in various cropping systems. Key words: Triticum, coexistence, gene flow, genetically-engineered, herbicide-resistant, trait confinement

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