Journal
PLOS ONE
Volume 9, Issue 8, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0106042
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Funding
- National Natural Science Foundation of China [31201232, 31071445, 31171579, 31201222, 31371643]
- Open Foundation of Key Laboratory of Soybean Molecular Design Breeding, Chinese Academy of Sciences
- Hundred Talents Program of Chinese Academy of Sciences
- Strategic Action Plan for Science and Technology Innovation of Chinese Academy of Sciences [XDA08030100]
- Heilongjiang Natural Science Foundation of China [ZD201001, JC201313]
- China Agriculture Research System [CARS-04]
- Chinese Academy of Agricultural Sciences (CAAS) Innovation Project
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Soybean cultivars are extremely diverse in time to flowering and maturation as a result of various photoperiod sensitivities. The underlying molecular genetic mechanism is not fully clear, however, four maturity loci E1, E2, E3 and E4 have been molecularly identified. In this report, cultivars were selected with various photoperiod sensitivities from different ecological zones, which covered almost all maturity groups (MG) from MG 000 to MG VIII and MG X adapted from latitude N 18 degrees to N 53 degrees. They were planted in the field under natural daylength condition (ND) in Beijing, China or in pots under different photoperiod treatments. Maturity-related traits were then investigated. The four E maturity loci were genotyped at the molecular level. Our results suggested that these four E genes have different impacts on maturity and their allelic variations and combinations determine the diversification of soybean maturity and adaptation to different latitudes. The genetic mechanisms underlying photoperiod sensitivity and adaptation in wild soybean seemed unique from those in cultivated soybean. The allelic combinations and functional molecular markers for the four E loci will significantly assist molecular breeding towards high productivity.
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