To explore the potential use of GA-responsive dwarfing gene Rht9 in common wheat breeding program, its effects on plant height, seedling vigor, photosynthesis and yield traits were investigated and compared in field experiments using hexaploid Rht9 dwarf lines derived from two crosses of Chinese winter wheat cultivars Xifeng 20 and Jinmai 47 with the Rht9 tetraploid donor Granaoto. Xifeng20-Rht9 dwarf lines reduced plant height on average by 25.38%, while on average by 9.39% in Jinmai47-Rht9/Rht8 dwarf lines. Compared with taller parents, coleoptile length was reduced by 19.80% in Xifeng20-Rht9 dwarf lines, while it was increased by 14.22% in Jinmai 47-Rht9/Rht8 dwarf lines. There were no adverse effects of Rht9 on root characters and flag leaf characters, though slightly increased relative leaf chlorophyll content (SPAD) observed. Grain numbers per spike was increased on average by 19.63%, and biomass per plant was slightly decreased on average by 3.37% in Xifeng 20-Rht9 dwarf lines, while, grain number per spike was decreased on average by 11.49%, and biomass per plant was increased on average by 8.57% in Jinmai47-Rht9/Rht8 dwarf lines. Compared with taller parents, Rht9 increased fertile tillers on average by 11.25% and 11.19%, grain yield on average by 10.11% and 14.10%, harvest index on average by 12.67% and 6.85%, while decreased spike length on average by 4.80% and 16.23%, slightly decreased 1000 kernels weight by 4.43% and 4.61%, in the Rht9 dwarf lines of Xifeng 20 and Jinmai 47, respectively. The results of current study could be useful for proper use of dwarfing gene Rht9 to improve lodging resistance, grain yield potential in wheat breeding programs for water limited area.
| Published in | American Journal of Agriculture and Forestry (Volume 5, Issue 4) |
| DOI | 10.11648/j.ajaf.20170504.14 |
| Page(s) | 102-111 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2017. Published by Science Publishing Group |
Dwarfing Genes, Rht8, Rht9, Plant Height, Seedling Vigor, Yield, Wheat
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APA Style
Tay Zar Linn, Daoura Goudia Bachir, Liang Chen, Yin-Gang Hu. (2017). Effects of Gibberellic Acid Responsive Dwarfing Gene Rht9 on Plant Height and Agronomic Traits in Common Wheat. American Journal of Agriculture and Forestry, 5(4), 102-111. https://doi.org/10.11648/j.ajaf.20170504.14
ACS Style
Tay Zar Linn; Daoura Goudia Bachir; Liang Chen; Yin-Gang Hu. Effects of Gibberellic Acid Responsive Dwarfing Gene Rht9 on Plant Height and Agronomic Traits in Common Wheat. Am. J. Agric. For. 2017, 5(4), 102-111. doi: 10.11648/j.ajaf.20170504.14
AMA Style
Tay Zar Linn, Daoura Goudia Bachir, Liang Chen, Yin-Gang Hu. Effects of Gibberellic Acid Responsive Dwarfing Gene Rht9 on Plant Height and Agronomic Traits in Common Wheat. Am J Agric For. 2017;5(4):102-111. doi: 10.11648/j.ajaf.20170504.14
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Download@article{10.11648/j.ajaf.20170504.14,
author = {Tay Zar Linn and Daoura Goudia Bachir and Liang Chen and Yin-Gang Hu},
title = {Effects of Gibberellic Acid Responsive Dwarfing Gene Rht9 on Plant Height and Agronomic Traits in Common Wheat},
journal = {American Journal of Agriculture and Forestry},
volume = {5},
number = {4},
pages = {102-111},
doi = {10.11648/j.ajaf.20170504.14},
url = {https://doi.org/10.11648/j.ajaf.20170504.14},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaf.20170504.14},
abstract = {To explore the potential use of GA-responsive dwarfing gene Rht9 in common wheat breeding program, its effects on plant height, seedling vigor, photosynthesis and yield traits were investigated and compared in field experiments using hexaploid Rht9 dwarf lines derived from two crosses of Chinese winter wheat cultivars Xifeng 20 and Jinmai 47 with the Rht9 tetraploid donor Granaoto. Xifeng20-Rht9 dwarf lines reduced plant height on average by 25.38%, while on average by 9.39% in Jinmai47-Rht9/Rht8 dwarf lines. Compared with taller parents, coleoptile length was reduced by 19.80% in Xifeng20-Rht9 dwarf lines, while it was increased by 14.22% in Jinmai 47-Rht9/Rht8 dwarf lines. There were no adverse effects of Rht9 on root characters and flag leaf characters, though slightly increased relative leaf chlorophyll content (SPAD) observed. Grain numbers per spike was increased on average by 19.63%, and biomass per plant was slightly decreased on average by 3.37% in Xifeng 20-Rht9 dwarf lines, while, grain number per spike was decreased on average by 11.49%, and biomass per plant was increased on average by 8.57% in Jinmai47-Rht9/Rht8 dwarf lines. Compared with taller parents, Rht9 increased fertile tillers on average by 11.25% and 11.19%, grain yield on average by 10.11% and 14.10%, harvest index on average by 12.67% and 6.85%, while decreased spike length on average by 4.80% and 16.23%, slightly decreased 1000 kernels weight by 4.43% and 4.61%, in the Rht9 dwarf lines of Xifeng 20 and Jinmai 47, respectively. The results of current study could be useful for proper use of dwarfing gene Rht9 to improve lodging resistance, grain yield potential in wheat breeding programs for water limited area.},
year = {2017}
}
TY - JOUR T1 - Effects of Gibberellic Acid Responsive Dwarfing Gene Rht9 on Plant Height and Agronomic Traits in Common Wheat AU - Tay Zar Linn AU - Daoura Goudia Bachir AU - Liang Chen AU - Yin-Gang Hu Y1 - 2017/07/07 PY - 2017 N1 - https://doi.org/10.11648/j.ajaf.20170504.14 DO - 10.11648/j.ajaf.20170504.14 T2 - American Journal of Agriculture and Forestry JF - American Journal of Agriculture and Forestry JO - American Journal of Agriculture and Forestry SP - 102 EP - 111 PB - Science Publishing Group SN - 2330-8591 UR - https://doi.org/10.11648/j.ajaf.20170504.14 AB - To explore the potential use of GA-responsive dwarfing gene Rht9 in common wheat breeding program, its effects on plant height, seedling vigor, photosynthesis and yield traits were investigated and compared in field experiments using hexaploid Rht9 dwarf lines derived from two crosses of Chinese winter wheat cultivars Xifeng 20 and Jinmai 47 with the Rht9 tetraploid donor Granaoto. Xifeng20-Rht9 dwarf lines reduced plant height on average by 25.38%, while on average by 9.39% in Jinmai47-Rht9/Rht8 dwarf lines. Compared with taller parents, coleoptile length was reduced by 19.80% in Xifeng20-Rht9 dwarf lines, while it was increased by 14.22% in Jinmai 47-Rht9/Rht8 dwarf lines. There were no adverse effects of Rht9 on root characters and flag leaf characters, though slightly increased relative leaf chlorophyll content (SPAD) observed. Grain numbers per spike was increased on average by 19.63%, and biomass per plant was slightly decreased on average by 3.37% in Xifeng 20-Rht9 dwarf lines, while, grain number per spike was decreased on average by 11.49%, and biomass per plant was increased on average by 8.57% in Jinmai47-Rht9/Rht8 dwarf lines. Compared with taller parents, Rht9 increased fertile tillers on average by 11.25% and 11.19%, grain yield on average by 10.11% and 14.10%, harvest index on average by 12.67% and 6.85%, while decreased spike length on average by 4.80% and 16.23%, slightly decreased 1000 kernels weight by 4.43% and 4.61%, in the Rht9 dwarf lines of Xifeng 20 and Jinmai 47, respectively. The results of current study could be useful for proper use of dwarfing gene Rht9 to improve lodging resistance, grain yield potential in wheat breeding programs for water limited area. VL - 5 IS - 4 ER -
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