Fig 22 - uploaded by Satinder Kaur
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3 Schematic representation to develop synthetic hexaploid wheat by the direct cross of diploid wheat with hexaploid wheat
Source publication
Wild crop relatives are a very important genetic resource for introducing new diversity in the modern-day crop plants. Generation of synthetic hexaploid wheat (SHW) is one of the most successful strategy to use diversity of progenitor species of wheat. Ever since the independent introduction by Kihara (1944) and McFadden and Sears (1944), SHWs have...
Citations
... Albena expressed the highest value of 83%, followed by 39a-5 and 41a-6 ( (Gatford et al., 2002;. Kaur et al. (2022) described the genes and QTLs for PHS tolerance in synthetic recombinant inbred lines. ...
This study characterized six introgression lines obtained from crossing two winter bread wheat varieties Albena
and Slaveya with the D-genome synthetic hexaploid wheat 530-1. Phenotypically, the lines differed from the parents,
as five of them expressed red spike color versus line 45-5 producing new coloration, identified as striped or banded
glume pigmentation. All lines were taller, with longer ears and spikelets, later in heading time and less productive in grain
yield than both wheat parents. They showed some positive traits in the field: optimal test weight (78–80 kg/hl), high
thousand kernel weight (48–51 g), low sprouted seeds (0.3–1.5%), and high falling number (314-350 s). Two lines (38-7
and 46-7) exceeded the parents in grain protein content. In the competitive variety trial, Albena showed significantly
higher sprouted grains (4.1%) and extreme measurements for a percentage of germination (99.0%) and germination
index (83.0%) in 2022. The data identified Albena as a wheat variety with pre-harvest sprouting susceptibility. Of the
lines, only 45-5 stood out with the lowest germination values and appeared as a promising genotype with resistance to
pre-harvest sprouting. The introgression lines exerted useful genetic diversity for the studied traits and could serve as
resources for quality improvement in wheat breeding programs.
