Breeding and Genetic Diversity of Indica Rice, Quanzhen 12

CHEN Jinwen; XIE Wangyou; XIE Shaohe; WEI Yi; WANG Tiansheng; CHEN Huiqing; ZHUANG Weidong; YU Wenchang

doi:10.19303/j.issn.1008-0384.2021.04.001

Volume 36 Issue 4

Apr. 2021

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Article Navigation > Fujian Journal of Agricultural Sciences > 2021 > 36(4): 379-385

CHEN J W, XIE W Y, XIE S H, et al. Breeding and Genetic Diversity of Indica Rice, Quanzhen 12 [J]. Fujian Journal of Agricultural Sciences，2021，36（4）：379−385 doi: 10.19303/j.issn.1008-0384.2021.04.001

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CHEN J W, XIE W Y, XIE S H, et al. Breeding and Genetic Diversity of Indica Rice, Quanzhen 12 [J]. Fujian Journal of Agricultural Sciences，2021，36（4）：379−385 doi: 10.19303/j.issn.1008-0384.2021.04.001

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Breeding and Genetic Diversity of Indica Rice, Quanzhen 12

doi: 10.19303/j.issn.1008-0384.2021.04.001

Quanzhou Agricultural Sciences Institute, Jinjiang, Fujian　362212, China

Received Date: 2019-09-02
Rev Recd Date: 2021-01-17

Available Online: 2021-04-20

Publish Date: 2021-04-30

Abstract

Abstract

Objective An early season indica rice with excellent grain quality was bred through sexual hybridization between pedigrees and planted in regional trials for performance determination. Its genetic diversity and polymorphism were compared with the parents’. Method Hybridization of the new rice was carried out using Jiafuzhan as the female parent and Rongxian 1 as the male parent. The resulting cultivar was submitted to the regional trials in Fujian for new early rice varieties evaluation in 2017–2018 and simultaneously tested for production in 2018. Genetic diversity of the new cultivar and its parents based on the 48 pairs of identified SSR markers distributed in the 12 chromosomes of rice were compared. Result In the provincial 2017–2018 regional trial, the newly bred Quanzhen 12 delivered an average yield of 7 557.6 kg·hm⁻², i.e., 1.82% higher than that of the reference, T78you 2155. However, its production yield in 2018 trial was 6.83% lower at 6 694.05 kg·hm⁻². The grain quality of Quanzhen 12 was judged to be Grade 2 for edible rice according to the standard set forth by the Ministry of Agriculture. The variety was approved and released by Fujian Province Committee of Crop Variety Identification. The SSR makers showed the genetic similarity between Quanzhen 12 and Jiafuzhan to be 0.625, and between Quanzhen 12 and Rongxian 1 to be 0.375. Conclusion A new high-quality, short Quanzhen 12 was successfully bred. From the performances at the trials, it was considered suitable for early season planting in the province. Quanzhen 12 and Jiafuzhan appeared to have a close phylogenetic relationship.
- High-quality rice,
- Quanzhen 12,
- breeding,
- genetic analysis

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References(15)

References

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