Microsatellite mapping of the Scr1 locus conferring screwed spike rachis to modify the spatial orientation of spikelets in Triticum aestivum L.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25328859%3A_____%2F17%3AN0000012" target="_blank" >RIV/25328859:_____/17:N0000012 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007%2Fs10722-016-0455-3" target="_blank" >https://link.springer.com/article/10.1007%2Fs10722-016-0455-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10722-016-0455-3" target="_blank" >10.1007/s10722-016-0455-3</a>

Result language

angličtina

Original language name

Microsatellite mapping of the Scr1 locus conferring screwed spike rachis to modify the spatial orientation of spikelets in Triticum aestivum L.

Original language description

In the wheat (Triticum aestivum L.) inflorescence, spikelets are arranged in two opposite rows on the main axis. Spikelet primordia initiate alternately on opposite sides at angles of 180A degrees. Genotypes exhibiting screwed spike rachis (SCR) have been selected as a gene resource having non-standard spike morphology in wheat. Although the SCR phenotype is a prospective gene resource, it is under-utilized. The SCR phenotype is due to the attachment of spikelets to the rachis nodes on the SCR. Seed number and individual kernel size are critical economic parameters and increasing seed number and single grain weight causes competition among the growing seeds. The SCR phenotype is hypothesized to avoid competition by assuring kernel growth space in each floret. The SCR trait has been observed in spikes and peduncles of KM 60-96. The semi-dwarfism of KM 60-96 was GA(3)-sensitive, and it was determined by the presence of Rht8 gene. The response of KM 60-96 to microtubule depolymerizing and stabilizing drugs indicated that the SCR phenotype was not caused by a defect in the alpha-Tubulin gene. The F-2 of two hexaploid hybrids and a pentaploid hybrid between SCR/normal types segregated 3 SCR:1 normal indicating that the SCR phenotype was determined by a single dominant gene, Scr1. Analysis with microsatellite markers indicated that the Scr1 allele was located in the region between markers Xgwm191 and Xgwm371 in chromosome arm 5BL. From the observation of the backcross generation, introgression of the Scr1 allele into locally adapted wheat cultivars is feasible to increase kernel growth space in each spikelet in the limited spike length.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10605 - Developmental biology

Project

<a href="/en/project/QJ1510206" target="_blank" >QJ1510206: Research of the wheat different grain discoloration types caused by substances with antioxidant effects, their use for development of varieties with positive health benefit for human and animal nutrition</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

GENETIC RESOURCES AND CROP EVOLUTION

ISSN

0925-9864

e-ISSN

1573-5109

Volume of the periodical

64

Issue of the periodical within the volume

7

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

1569-1579

UT code for WoS article

000410711900008

EID of the result in the Scopus database

2-s2.0-84990864915