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Combining ability analysis on rhizomatousness via incomplete diallel crosses between perennial wild relative of rice and Asian cultivated rice

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Abstract

Compared with annual cultivated rice, perennial rice had great advantages of soil erosion control, labor saving, water and fertilizer management, etc. As the key organ for perenniality, rhizome can help grasses to achieve rapid expansion to occupy more environmental resources, and withstand the harsh environmental conditions. Oryza longistaminata, a perennial wild relative of rice with vigorous rhizomes, is an ideal donor for transferring perenniality to Asian cultivated rice (Oryza sativa). However, some hybrid F1 between O. longistaminata and cultivated rice didn’t have rhizomes. Obtaining rhizomatous hybrid progeny becomes a prerequisite for the rhizomes study. In this work, four varieties of O. sativa and three accessions of O. longistaminata were used to carry out an incomplete diallel cross experiment. It was found that most F1 hybrids had rhizomes with varying length and numbers. Data analysis showed that the general combining ability (GCA) of the female parents had significant effect on rhizome-related trait of the F1s. Nevertheless, the GCA of the male parents and special combining ability of the hybrid combination played minor effect. And we speculated that the appropriate choice for female parents is more crucial to obtain rhizomatous hybrid. As the first incomplete diallel cross between O. longistaminata and O. sativa, this work would be benefit to appropriate parent selection for genetic research and breeding of perennial rice.

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All data were first published in this paper, never used for other paper.

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Microsoft office software and SPSS (Statistical Product and Service Solutions) 17.0 software was used for data processing.

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Acknowledgements

We thank Professor Ruiyang Zhou of College of Agriculture, Guangxi University for providing wild relative of rice.

Funding

This work was supported by Grants from the National Natural Science Foundation of China (31901486, 31471476), the Guangxi Natural Science Foundation of China (2018GXNSFDA050010, 2018GXNSFBA138022), Guangxi Science and Technology Development Program (AD19110145),the Scientific Research Foundation of Guangxi University (XTZ131548, XMPZ160942) and the State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources (SKLCUSA-a201916, SKLCUSA-a202004), and the Innovation Project of Guangxi Graduate Education (YCBZ2018021).

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ZF collected and analyzed the data and drafted the manuscript. KW, YF and LT revised the manuscript. JY designed the experiment and revised the manuscript. All authors have read and approved the content of the manuscript.

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Correspondence to Jiangyi Yang.

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Fan, Z., Wang, K., Fan, Y. et al. Combining ability analysis on rhizomatousness via incomplete diallel crosses between perennial wild relative of rice and Asian cultivated rice. Euphytica 216, 140 (2020). https://doi.org/10.1007/s10681-020-02676-w

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  • DOI: https://doi.org/10.1007/s10681-020-02676-w

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