TY - JOUR
T1 - Genetic dissection of QTLs associated with spikelet-related traits and grain size in sorghum
AU - Takanashi, Hideki
AU - Shichijo, Mitsutoshi
AU - Sakamoto, Lisa
AU - Kajiya-Kanegae, Hiromi
AU - Iwata, Hiroyoshi
AU - Sakamoto, Wataru
AU - Tsutsumi, Nobuhiro
N1 - Funding Information:
This research was partly supported by the Core Research for Evolutional Science and Technology (CREST) from the Japan Science and Technology Agency (to N.T. and W.S.) and KAKENHI grants [17H01457 from the Japanese Society for the Promotion of Science (JSPS) to N.T.]. We would like to thank Editage (https://www. editage.com) for English language editing.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - Although spikelet-related traits such as size of anther, spikelet, style, and stigma are associated with sexual reproduction in grasses, no QTLs have been reported in sorghum. Additionally, there are only a few reports on sorghum QTLs related to grain size, such as grain length, width, and thickness. In this study, we performed QTL analyses of nine spikelet-related traits (length of sessile spikelet, pedicellate spikelet, pedicel, anther, style, and stigma; width of sessile spikelet and stigma; and stigma pigmentation) and six grain-related traits (length, width, thickness, length/width ratio, length/thickness ratio, and width/thickness ratio) using sorghum recombinant inbred lines. We identified 36 and 7 QTLs for spikelet-related traits and grain-related traits, respectively, and found that most sorghum spikelet organ length- and width-related traits were partially controlled by the dwarf genes Dw1 and Dw3. Conversely, we found that these Dw genes were not strongly involved in the regulation of grain size. The QTLs identified in this study aid in understanding the genetic basis of spikelet- and grain-related traits in sorghum.
AB - Although spikelet-related traits such as size of anther, spikelet, style, and stigma are associated with sexual reproduction in grasses, no QTLs have been reported in sorghum. Additionally, there are only a few reports on sorghum QTLs related to grain size, such as grain length, width, and thickness. In this study, we performed QTL analyses of nine spikelet-related traits (length of sessile spikelet, pedicellate spikelet, pedicel, anther, style, and stigma; width of sessile spikelet and stigma; and stigma pigmentation) and six grain-related traits (length, width, thickness, length/width ratio, length/thickness ratio, and width/thickness ratio) using sorghum recombinant inbred lines. We identified 36 and 7 QTLs for spikelet-related traits and grain-related traits, respectively, and found that most sorghum spikelet organ length- and width-related traits were partially controlled by the dwarf genes Dw1 and Dw3. Conversely, we found that these Dw genes were not strongly involved in the regulation of grain size. The QTLs identified in this study aid in understanding the genetic basis of spikelet- and grain-related traits in sorghum.
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U2 - 10.1038/s41598-021-88917-x
DO - 10.1038/s41598-021-88917-x
M3 - Article
C2 - 33931706
AN - SCOPUS:85105236172
SN - 2045-2322
VL - 11
JO - Scientific Reports
JF - Scientific Reports
IS - 1
M1 - 9398
ER -