Genetics of flowering time in bread wheat Triticum aestivum: complementary interaction between vernalization-insensitive and photoperiod-insensitive mutations imparts very early flowering habit to spring wheat

Kumar, Sushil; Sharma, Vishakha; Chaudhary, Swati; Tyagi, Anshika; Mishra, Poonam; Priyadarshini, Anupama; Singh, A. K.

doi:10.1007/s12041-012-0149-3

Cited by 38 publications

(25 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It was reported that wheat genotypes with all three dominant alleles of Vrn-1 genes (Vrn-A1, Vrn-B1, and Vrn-D1) head quite early compared to mono-or di-dominant gene combinations [28]. Similar information was also reported by various authors [5,9,[57][58][59]. From the results of the above-mentioned studies, it was shown which combinations of alleles perform better than others.…”

Section: The Interaction Of Vrn and Ppd Alleles And Its Impact On Flosupporting

confidence: 74%

“…An epistatic interaction between the Vrn-A1 and Vrn-D1 active alleles was demonstrated in a study [9]. The same study confirmed an additive/complementary interaction for flowering time between the photoperiod-insensitive Ppd-D1a allele and the Vrn-1 active alleles [57,60].…”

Section: The Interaction Of Vrn and Ppd Alleles And Its Impact On Flosupporting

confidence: 53%

“…Cultivars containing different combinations of Vrn-1 and Ppd-1 alleles will respond differently under different environmental conditions and thus, display different heading dates or flowering times [3,9,23,51,52]. It was discovered that Vrn-A1 genotypes (either single or in combination with other Vrn alleles) are the earliest in flowering followed by…”

Section: The Interaction Of Vrn and Ppd Alleles And Its Impact On Flomentioning

confidence: 99%

“…The semidominant PpdD1a mutation has been identified as the major source of earliness in wheat varieties globally. This most potent allele upregulates the expression of the Vrn-3 gene, which is a homologue of the flowering locus T (FT) of A. thaliana [9], under both SD and LD conditions, therefore confers early flowering in wheat [13,43].…”

Section: The Role Of Diagnostic Molecular Markers In the Detection Ofmentioning

confidence: 99%

“…Flowering time is an important component of the life cycle with a very wide and complex genetic control. Three groups of genes with major influence on flowering time of wheat include vernalization response genes, photoperiod response genes, and genes controlling the developmental rate (earliness per se (eps)) when vernalization and photoperiod response requirements have been met [1,9,10]. With the exception of eps genes, the environment plays a role in the expression of vernalization and photoperiod response genes and thus, to their contribution towards flowering time and growth of wheat [1,11,12].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Impact of Growth Habit and Architecture Genes on Adaptation and Performance of Bread Wheat

Khumalo¹,

Maphosa²,

Tsilo³

2017

Wheat Improvement, Management and Utilization

View full text Add to dashboard Cite

In bread wheat (Triticum aestivum L.), flowering time and plant stature are important phenological and agronomic traits for adaptation, yield potential, and yield stability. Timely flowering is critical for production, and the flowering window has to be late enough to avoid early season frosts but early enough to avoid late season stresses such as heat and terminal drought. Flowering time is controlled mainly by vernalization, photoperiod response, and earliness per se genes, which can be exploited to fine-tune growth and tailor flowering time for the production of desirable wheat cultivars. Tailoring flowering time could help reduce preharvest sprouting problems by escaping high temperatures and late season rainfall, which promote preharvest sprouting, hence yield loss. Concisely summarizing available information on flowering time and identifying research gaps could provide direction for future research. This chapter, therefore, discusses: (i) the progress made in discovering genes involved and the impact of their extensive allelic variation on flowering time, (ii) the potential benefits of tailoring wheat's flowering time to improve yield, and (iii) the benefits of introgressing genes for other complimentary traits, such as semidwarf and preharvest sprouting resistance on advanced lines to achieve higher yield, thus, sustainable food security.

show abstract

Section: The Interaction Of Vrn and Ppd Alleles And Its Impact On Flosupporting

confidence: 74%

Section: The Interaction Of Vrn and Ppd Alleles And Its Impact On Flosupporting

confidence: 53%

Section: The Interaction Of Vrn and Ppd Alleles And Its Impact On Flomentioning

confidence: 99%

Section: The Role Of Diagnostic Molecular Markers In the Detection Ofmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Impact of Growth Habit and Architecture Genes on Adaptation and Performance of Bread Wheat

Khumalo¹,

Maphosa²,

Tsilo³

2017

Wheat Improvement, Management and Utilization

View full text Add to dashboard Cite

show abstract

Breeding for resilience to increasing temperatures: A field trial assessing genetic variation in soft red winter wheat

Russell

Sanford

2018

Ecology and Evolution

View full text Add to dashboard Cite

Breeding for resilience to climate change is a daunting prospect. Crop and climate models tell us that global wheat yields are likely to decline as the climate warms, causing a significant risk to global food security. High temperatures are known to affect crop development yet breeding for tolerance to heat stress is difficult to achieve in field environments. We conducted an active warming study over two years to quantify the effects of heat stress on genetic variation of soft red winter (SRW) wheat (Triticum aestivum L.). Forty SRW cultivars and breeding lines were chosen based on marker genotypes at photoperiod sensitivity and reduced height loci. These genotypes were planted in a randomized complete block design replicated twice across two environments, ambient and artificially warmed. Average heading date occurred 5 days earlier in the warmed environment than in the ambient environment over both years (p ≤ 0.05). On average, grain yield was significantly reduced in the warmed environment by 211.41 kg/ha (p ≤ 0.05) or 4.84%, though we identified 13 genotypes with increased yield in response to warming in both years. Of these genotypes, eight had significantly increased N uptake while six showed significantly increased N utilization efficiency under warming. Under warming, genotypes with wild‐type alleles at the Rht‐D1 locus display significantly greater yields (p ≤ 0.01) and biomass (p ≤ 0.001) than genotypes with reduced height alleles. Of the 13 genotypes with higher (p ≤ 0.01) yields under warming, nine have the wild‐type allele at the Rht‐D1 locus in addition to being photoperiod insensitive. The next steps will be to validate these findings in other populations and to develop an efficient breeding/phenotyping scheme that will lead to more resilient cultivars.

show abstract

Defining a Genetic Ideotype for Crop Improvement

Trethowan

2014

Methods in Molecular Biology

View full text Add to dashboard Cite

While plant breeders traditionally base selection on phenotype, the development of genetic ideotypes can help focus the selection process. This chapter provides a road map for the establishment of a refined genetic ideotype. The first step is an accurate definition of the target environment including the underlying constraints, their probability of occurrence, and impact on phenotype. Once the environmental constraints are established, the wealth of information on plant physiological responses to stresses, known gene information, and knowledge of genotype ×environment and gene × environment interaction help refine the target ideotype and form a basis for cross prediction.Once a genetic ideotype is defined the challenge remains to build the ideotype in a plant breeding program. A number of strategies including marker-assisted recurrent selection and genomic selection can be used that also provide valuable information for the optimization of genetic ideotype. However, the informatics required to underpin the realization of the genetic ideotype then becomes crucial. The reduced cost of genotyping and the need to combine pedigree, phenotypic, and genetic data in a structured way for analysis and interpretation often become the rate-limiting steps, thus reducing genetic gain. Systems for managing these data and an example of ideotype construction for a defined environment type are discussed.

show abstract

Genetics of flowering time in bread wheat Triticum aestivum: complementary interaction between vernalization-insensitive and photoperiod-insensitive mutations imparts very early flowering habit to spring wheat

Cited by 38 publications

References 60 publications

Impact of Growth Habit and Architecture Genes on Adaptation and Performance of Bread Wheat

Impact of Growth Habit and Architecture Genes on Adaptation and Performance of Bread Wheat

Breeding for resilience to increasing temperatures: A field trial assessing genetic variation in soft red winter wheat

Defining a Genetic Ideotype for Crop Improvement

Contact Info

Product

Resources

About