Breeding and Properties of Hybrid Rice Yexiangyou 699

ZHU Yongsheng; WEI Yidong; JIANG Jiahuan; LI Qixiang; DONG Ruixia; ZHENG Feiyan; CHEN Liping; WANG Xiaofang; XIE Huaan; ZHANG Jianfu

doi:10.19303/j.issn.1008-0384.2023.12.003

Volume 38 Issue 12

Dec. 2023

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Article Navigation > Fujian Journal of Agricultural Sciences > 2023 > 38(12): 1405-1413

ZHU Y S, WEI Y D, JIANG J H, et al. Breeding and Properties of Hybrid Rice Yexiangyou 699 [J]. Fujian Journal of Agricultural Sciences，2023，38（12）：1405−1413 doi: 10.19303/j.issn.1008-0384.2023.12.003

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ZHU Y S, WEI Y D, JIANG J H, et al. Breeding and Properties of Hybrid Rice Yexiangyou 699 [J]. Fujian Journal of Agricultural Sciences，2023，38（12）：1405−1413 doi: 10.19303/j.issn.1008-0384.2023.12.003

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Breeding and Properties of Hybrid Rice Yexiangyou 699

doi: 10.19303/j.issn.1008-0384.2023.12.003

1.
Rice Research Institute, Fujian Academy of Agricultural Sciences/State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Academy of Agricultural Sciences/Key Laboratory of hybrid rice Germplasm Enhancement and Molecular Breeding in South China, Ministry of Agriculture, P.R China/Fuzhou branch, National Rice Improvement Center of China/National Engineering Laboratory of Rice/ Incubator of Key Laboratory of Crop Germplasm Enhancement and Molecular Breeding between Fujian and Ministry of Sciences and Technology/ Fujian Engineering Laboratory of Crop Molecular Breeding/ Fujian Key Laboratory of Rice Molecular Breeding/Resaerch Base of South-China of National Key Laboratory of Hybrid Rice of China, Fuzhou , Fujian　350003, China
2.
Sanming Seed Station,Sanming, Fujian　365000, China

Received Date: 2023-11-09
Rev Recd Date: 2023-11-29

Available Online: 2024-01-25

Publish Date: 2023-12-28

Abstract

Abstract

Objective A disease-resistant, high-quality hybrid rice was bred to meet the market demand and improve the profitability for the farmers. Method Based on the desired gene haplotypes, the high-yield, disease-resistant, strong-restoring and combining Fuhui 699 restorer line was selected as the male parent to cross with the female parents, the 3 sterile Yexiang A lines that are known for their desirable fragrance, high quality, and strong disease-resistance. The resulting F₁ hybrid was examined for the target traits at multi-year and multi-point rice blast resistance tests as well as multi-ecological adaptability and rice quality analyses. Result From 2017 to 2018, the choice hybrid, Yexiangyou 699, was submitted to the regional trial on mid-season rice in Fujian. It displayed an evenly distributed population of acceptable plant type and delivered a two-year averaged growth period of 140.4 d, which was 2.8 d shorter than the reference, II You 3301. The effective panicle number of the cultivar averaged 2.085 million panicles·hm⁻², the plant height 135.4 cm, the seed setting rate 86.89%, and the 1000-grain weight 26.3 g. The average crop yield was 9 404.3 kg·hm⁻², which was 1.50% higher than that of control. The hybrid inherited 7 blast-resistance and two virus-resistance genes from the parents rendering it blast-free in the field and laboratory for 2 years. Conclusion The rates of brown and milled rice of Yexiangyou 699 (now officially identified as Min Approved Rice No. 20200012) were 80.1% and 68.5%, respectively. The grain quality indicators of the hybrid included 0.8% on chalkiness, Grade 1 on transparency, 5.5 on alkali elimination, 86 mm on gelatinized consistency index, 14.0% on amylopectin content, 3^rd grade on the high-quality edible rice set by the Ministry, and high yield and strong disease-resistance in the field. Yexiangyou 699 was recommended as a new breed for cultivation.
- Rice blast resistant,
- hybrid rice,
- Yexiangyou 699,
- high quality

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References(27)

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