Dataset Information

Bidirectional selective genotyping approach for the identification of quantitative trait loci controlling earliness per se in winter rye (Secale cereale L.).

ABSTRACT: The genes controlling earliness of plants include genes responsible for vernalisation (Vrn) and photoperiod (Ppd), and those that are not entirely associated with a response to temperature or light. The last group of loci is known as earliness per se (Eps). Eps genes have been most commonly reported in the scientific literature as quantitative trait loci (QTL). The objective of this study was to use a bidirectional selective genotyping (BSG) method for the identification of loci controlling Eps, assessed at the heading stage in a newly developed rye population of recombinant inbred lines. We identified four linkage groups representing fragments of chromosomes, 1R, 5R, 6R and 7R, and containing, in total, 155 DArT markers significantly associated with earliness in rye. The results are discussed in the context of previously published QTL analyses.

SUBMITTER: Myskow B

PROVIDER: S-EPMC4731430 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Bidirectional selective genotyping approach for the identification of quantitative trait loci controlling earliness per se in winter rye (Secale cereale L.).

Myśków Beata B Stojałowski Stefan S

Journal of applied genetics 20150612 1

The genes controlling earliness of plants include genes responsible for vernalisation (Vrn) and photoperiod (Ppd), and those that are not entirely associated with a response to temperature or light. The last group of loci is known as earliness per se (Eps). Eps genes have been most commonly reported in the scientific literature as quantitative trait loci (QTL). The objective of this study was to use a bidirectional selective genotyping (BSG) method for the identification of loci controlling Eps, ...[more]

PMID: 26069166

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Project description:BackgroundRolling of leaves (RL) is a phenomenon commonly found in grasses. Morphology of the leaf is an important agronomic trait in field crops especially in rice; therefore, majority of the rice breeders are interested in RL. There are only few studies with respect to RL of wheat and barley; however, the information regarding the genetic base of RL with respect to the shape of leaf in rye is lacking. To the best of our knowledge, this is the first study on the localization of loci controlling RL on high density consensus genetic map of rye.ResultsGenotypic analysis led to the identification of 43 quantitative trait loci (QTLs) for RL, grouped into 28 intervals, which confirms the multigenic base of the trait stated for wheat and rice. Four stable QTLs were located on chromosomes 3R, 5R, and 7R. Co-localization of QTL for RL and for different morphological, biochemical and physiological traits may suggests pleiotropic effects of some QTLs. QTLs for RL were associated with QTLs for such morphological traits as: grain number and weight, spike number per plant, compactness of spike, and plant height. Two QTLs for RL were found to coincide with QTLs for drought tolerance (4R, 7R), two with QTLs for heading earliness (2R, 7R), one with α-amylase activity QTL (7R) and three for pre-harvest sprouting QTL (1R, 4R, 7R). The set of molecular markers strongly linked to RL was selected, and the putative candidate genes controlling the process of RL were identified. Twelve QTLs are considered as linked to candidate genes on the base of DArT sequences alignment, which is a new information for rye.ConclusionsOur results expand the knowledge about the network of QTLs for different morphological, biochemical and physiological traits and can be a starting point to studies on particular genes controlling RL and other important agronomic traits (yield, earliness, pre-harvest sprouting, reaction to water deficit) and to appoint markers useful in marker assisted selection (MAS). A better knowledge of the rye genome and genes could both facilitate rye improvement itself and increase the efficiency of utilizing rye genes in wheat breeding.

Dataset Information

Bidirectional selective genotyping approach for the identification of quantitative trait loci controlling earliness per se in winter rye (Secale cereale L.).

Publications

Bidirectional selective genotyping approach for the identification of quantitative trait loci controlling earliness per se in winter rye (Secale cereale L.).

Similar Datasets

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