Abstract
This study aimed to employ plant print identification to screen a wild-type soybean (Glycine soja Seib. and Zucc.) and then hybridize it with a cultivated soybean (Glycine max (L.) Merr.) (Lu, Chin Sci Bull 43:2074–2078, 1998) with a view to produce a salt-resistant variety. Scanning electron microscopy, optical microscopy, and paraffin sectioning were employed to compare two varieties of wild soybeans (#028 and #029) captured from different eco-environments, and the one with a salt gland present –– wild soybean #029 – was chosen as the male parent for hybridization. Considering a soybean variety with low stem as female parent, hybridization was performed and a new variety of salt-resistant soybean resulted, Ji-Yu59, which opened up a new, cost-efficient way of soybean breeding. Under saline-alkali stress, our salt-tolerant wild soybean is anticipated to exhibit antagonism by evolving a series of salt-resistant structures, including a salt-containing vacuolar package and a salt gland. The salt gland would help eliminate salts from the soybean plant; upon maturity, a salt gland is known to be able to break up salts to release their respective ions, effectively reducing salt and alkali stress. Therefore, a wild soybean with salt gland is an excellent choice for the hybridization of salt-resistant soybean varieties.
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Acknowledgements
The authors are thankful to the National Key Research and Development Program of China, National Natural Science Foundation of China, Ministry of Public Security Project of China and Changchun Double Ten Science and Technology Project for financing the research work. The authors thank Dr. N. Rehman for proof-reading the manuscript.
Funding
This work was supported by the National Key Research and Development Program of China (No. 2017 YFC0803803), the National Natural Science Foundation of China (Nos. 41271231, 30370862, 30070460, 39870528), the Ministry of Public Security Project of China (No.1510697607), the Changchun Double Ten Science and Technology Project of Ji Lin ( No. 17SS026).
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JL, JZ, and JY have conceived and designed the study. YL, ZC XL and LZ have performed experiments of Plant Print Identification. GY, YM and JC have collected the paternal material of salt-resistant wild soybean, which have been resistant salt soybean breeding. YZ and MS have carried out the field propagation and cultivation, Including the promotion of salt-resistant soybean, expand the planting area, etc. This study is characterized by both division of labor and close cooperation and mutual support among researchers.
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Li, Y., Li, X., Chen, Zq. et al. Application of Plant Print Identification Technology in Salt-resistant Soybean Breeding. J Plant Growth Regul 40, 1557–1565 (2021). https://doi.org/10.1007/s00344-020-10213-1
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DOI: https://doi.org/10.1007/s00344-020-10213-1