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Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (36): 1-5.doi: 10.11924/j.issn.1000-6850.casb2022-0131

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A New Two-line Hybrid Rice Variety ‘Long Liangyou 0078’ of Multi-panicle Type: Breeding and Application

ZHANG Wen1,2(), PENG Jiming2, YUAN Dingyang2, LIU Ziqi2, TANG Zibiao2, YANG Lu2, YANG Feng2, YANG Yuanzhu3, LUO Deqiang4, LI Jianwu2, PENG Rui2()   

  1. 1Hunan Agricultural University, Changsha 410125
    2Hunan Hybrid Rice Research Center, Changsha 410125
    3Hunan Yahua Seed Industry Research Institute, Changsha 410125
    4Guizhou Rice Research Institute, Guiyang 550016
  • Received:2022-03-03 Revised:2022-06-05 Online:2022-12-25 Published:2023-01-17

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Abstract:

Multi-panicle Type Super Hybrid Rice Breeding is a new breeding model, and it requires that the medium-maturing indica rice variety should have effective panicles 10.0% more than that of the check variety. New R-line ‘10P50’ was bred through the crossing breeding method with excellent germplasm resources. Then, a new two-line combination, ‘Long Liangyou 0078’, was bred with R-line ‘10P50’ and S-line ‘Long Ke 638S’. The effective panicle number of this combination was 15.4% higher than that of the check variety averagely in the national rice trial in 2019 and 2020, and it had a high seed setting rate and strong resistance to rice blast and bacterial leaf blight. The high-yielding demonstrations were carried out in Saya City of Hainan Province, Changsha City of Hunan Province and Xingyi City of Guizhou Province. Its techniques of high-yielding cultivation and seed production were explored.

Key words: multi-panicle type, hybrid rice, ‘Long Liangyou 0078’, two-line, crossing breeding