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Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (22): 11-16.doi: 10.11924/j.issn.1000-6850.casb2020-0658

Special Issue: 小麦

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Breeding of Nationally Approved Wheat Variety ‘Linhan 8’ with Cold Resistance, Water Saving and High Yield

Liu Xinyue(), Liu Li, Zhang Songling, Wei Yunzong()   

  1. Wheat Research Institute, Shanxi Agricultural University, Linfen Shanxi 041000
  • Received:2020-11-16 Revised:2021-04-12 Online:2021-08-05 Published:2021-08-26
  • Contact: Wei Yunzong E-mail:liu-xinyue@163.com;weiyzong@163.com

Abstract:

Aiming at the ecological environment with high frequency of drought, freezing damage, cold in spring, dry hot wind and other adverse factors in HuangHuai wheat region, we focused on the aggregation of wheat characteristics such as high quality, high yield, adversity resistance and wide adaption, and bred varieties suitable for the region. Taking widely adaptive and high quality ‘Jinmai 79’ as the female parent, and drought resistant, freezing resistant and high quality ‘Linhan 5408’ as the male parent, cross breeding was carried out to achieve the complementarity of the characteristics and the aggregation of the high quality genes. ‘Linhan 8’ was selected with the methods of pedigree and distant hybridization, alternative selection between irrigation and dryland field, appraisal under different ecological sites, and molecular marker assistance. Molecular genetic test showed that ‘Linhan 8’ had 8 drought resistant and water saving relative genes and 10 markers highly linked with high water utilization. The yield of the regional trial in HuangHuai drought and barren area for winter wheat reached 4873.5 kg/hm2, increased by 7.0% compared with that of ‘Jinmai 47’ in 2017-2018. The yield of the production trial reached 4656.0 kg/hm2, increased by 8.4% compared with that of ‘Jinmai 47’ in 2018-2019. ‘Linhan 8’ was approved by the State Crop Variety Certification Commission with GuoShenMai No. 202000033. This variety has the characteristics of high quality, high and stable yield, drought resistance, strong resistance to adversity and wide adaptability. It also has certain cold resistance, a large number of panicles, net panicle layers, good light transmission and favorable maturity appearance. The variety is suitable for planting in Huang-Huai drought and barren area such as Jinnan in Shanxi Province, Baoji, Xianyang, Tongchuan in Shannxi Province, Henan Province, and the drought and barren field in Cangzhou of Hebei Province.

Key words: winter wheat, ‘Linhan 8’, variety selection, cross breeding, characteristics, cultivation technique

CLC Number: