长粒香型的超短生育期水稻新品系创制

doi:10.3724/SP.J.1006.2024.32044

Abstract

Abstract:

Developing high-quality and ultrashort-duration rice varieties is of great significance for improving the multiple cropping index in the middle and lower reaches of Yangtze River to ensure our food security. In this study, the ultrashort-duration rice line CPPC09-180-28-1-5 was used as the recipient parent. The high-quality variety Xiangyaxiangzhan which carrying the fragrance gene fgr and the grain length gene GW7 was used as the donor parent. Three new breeding lines carrying homozygous fgr and GW7 genes were bred with high-quality and ultrashort-duration, via hybridization, backcrossing and genome-wide marker-assisted selection. Fragrance identification, main agronomic characters, and grain quality analysis of the new breeding lines were carried out. The new lines carrying fgr and GW7 genes had obvious fragrance. The grain length of the new lines was significantly increased compared with the recipient parent CPPC09-180-28-1-5, resulting in better grain quality. The whole growth period of the new lines was about 85-98 days, which was basically consistent with the recipient parent CPPC09-180-28-1-5. The new lines could be planted as early or late rice in the rice area of the middle and lower reaches of the Yangtze River to improve the multiple cropping index. In addition, plant height, 1000-grain weight, and yield per plant of the new breeding lines were significantly reduced compared with the recipient parent CPPC09-180-28-1-5, indicating that the introgression of two chromosome fragments carrying target genes in this study has a significant effect on the main agronomic traits of CPPC09-180-28-1-5. This study provides the germplasm resources and strategies for breeding high grain quality and ultrashort-duration rice by the molecular breeding.

Key words: rice, high-quality, ultrashort-duration, marker-assisted selection

PEI Fa-Jing, ZHANG Wen-Xuan, ZHANG Xiao, WANG Xin-Yu, PENG Shao-Bing, MI Jia-Ming. Developing new rice lines with ultrashort-duration, long-grain, and fragrance[J].Acta Agronomica Sinica, 2024, 50(7): 1684-1698.

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标记 Marker	染色体 Chr.	SNP位点 SNP position	引物名称 Primer name	引物序列 Primer sequence (5′-3′)
fgr-8UD2869	8	20,382,869	8UD2869-G	GAAGGTGACCAAGTTCATGCTAACCATAGGAGCAGCTGAAG
			8UD2869-A	GAAGGTCGGAGTCAACGGATTAACCATAGGAGCAGCTGAAA
			8UD2869-R	GGTTGCATTTACTGGGAGTT
GW7-7YG6092	7	24,666,092	7YG6092-T	GAAGGTGACCAAGTTCATGCTTTATGTCGATCTCCTTCACCATGCT
			7YG6092-C	GAAGGTCGGAGTCAACGGATTTTATGTCGATCTCCTTCACCATGCC
			7YG6092-R	TCGAAGAGTCCAAGAAGCAGAATC
GW7-7YG6398	7	24,666,398	7YG6398-G	GAAGGTGACCAAGTTCATGCTCATGCTCGCCAATGCAAGG
			7YG6398-A	GAAGGTCGGAGTCAACGGATTCATGCTCGCCAATGCAAGA
			7YG6398-R	GTTCAGAAACCTCAGGAAGCTG
1JB0799	1	9,190,799	1JB0799-A	GAAGGTGACCAAGTTCATGCTTCATTATCTCAAATAGGCAAATACCTTCA
			1JB0799-G	GAAGGTCGGAGTCAACGGATTTCATTATCTCAAATAGGCAAATACCTTCG
			1JB0799-R	TCGTCGTTTTCTTTAGCAATTCTCA
2VC9082	2	21,229,082	2VC9082-G	GAAGGTGACCAAGTTCATGCTAGAGGACTGAGAAAAGGGTAATCG
			2VC9082-A	GAAGGTCGGAGTCAACGGATTAGAGGACTGAGAAAAGGGTAATCA
			2VC9082-R	GACGTTCTACACTTCTGATCCAGT
3ZC1943	3	25,271,943	3ZC1943-T	GAAGGTGACCAAGTTCATGCTCATGACCACGTATGTTGAAAGTAGTT
			3ZC1943-C	GAAGGTCGGAGTCAACGGATTCATGACCACGTATGTTGAAAGTAGTC
			3ZC1943-R	TGTGGTCTCTGTTTTCCTTGAAAG
10TE2494	10	19,472,494	10TE2494-A	GAAGGTGACCAAGTTCATGCTAGTTATGCCAACCAATAGCACTAA
			10TE2494-C	GAAGGTCGGAGTCAACGGATTAGTTATGCCAACCAATAGCACTAC
			10TE2494-R	AGAAGAAGAATAAGTTTGGCGCAG

品系名称 Breeding line	评价结果(2021武汉晚季) Evaluation (2021 Wuhan late season)	评价结果(2022海南) Evaluation (2022 Hainan)
CPPC09-180-28-1-5	无香味Non-fragrant	无香味Non-fragrant
FJ2161-1	有香味Fragrant	有香味Fragrant
FJ2161-2	有香味Fragrant	有香味Fragrant
FJ2162-1	—	有香味Fragrant
象牙香占Xiangyaxiangzhan	有香味Fragrant	有香味Fragrant

品系名称 Breeding line	出糙率 Brown rice rate (%)	精米率 Milling rice rate (%)	整精米率 Head rice rate (%)	垩白粒率 Chalky rice rate (%)	垩白度 Chalkiness degree (%)	粒长 Head rice length (mm)	长宽比 Head rice length/width ratio	直链淀粉含量 Amylose content (%)	胶稠度 Gel consistency (mm)
CPPC09-180-28-1-5	77.4±0.2	66.8±0.4	63.9±0.3	13.8±2.8	3.1±0.7	5.5±0.1	2.7±0.0	13.7±0.3	76.9±0.5
FJ2161-1	73.1±0.8^**	61.7±3.6^*	56.4±1.8^**	31.6±5.5^**	9.7±2.6^**	6.5±0.4^**	3.9±0.2^**	12.7±1.7	80.2±4.0
FJ2161-2	72.6±2.4^*	60.6±3.1^*	53.9±3.6^**	20.3±3.4^**	8.4±1.8^**	6.6±0.3^**	3.8±0.3^**	13.2±0.8	82.5±1.2^**
FJ2162-1	70.5±1.2^**	55.8±1.8^**	49.4±1.0^**	33.6±6.7^**	13.0±0.2^**	6.2±0.1^**	3.6±0.1^**	12.7±0.3^*	74.9±0.8

品系名称 Breeding line	出糙率 Brown rice rate (%)	精米率 Milling rice rate (%)	整精米率 Head rice rate (%)	垩白粒率 Chalky rice rate (%)	垩白度 Chalkiness degree (%)	粒长 Head rice length (mm)	长宽比 Head rice length/width ratio	直链淀粉含量 Amylose content (%)	胶稠度 Gel consistency (mm)
CPPC09-180-28-1-5	75.3±0.9	67.4±0.7	64.1±0.5	37.4±3.5	9.6±1.7	6.3±0.1	3.2±0.1	10.0±0.5	79.8±2.5
FJ2161-1	71.5±0.2^*	61.9±0.8^*	46.8±0.5^**	38.7±1.9	13.3±0.1	6.9±0.1^**	4.1±0.0^**	10.5±0.3	77.5±3.5
FJ2161-2	71.5±0.3^*	61.4±0.5^**	48.4±0.5^**	26.8±0.7	7.4±0.4	6.9±0.0^**	4.1±0.1^**	10.6±0.4	79.0±2.6
FJ2162-1	72.6±0.2	61.4±0.2^**	49.1±0.3^**	38.1±2.7	12.8±2.4	6.8±0.1^**	4.0±0.1^**	9.7±0.4	73.2±1.3^*
象牙香占Xiangyaxiangzhan	71.9±0.4^*	64.9±0.8	59.1±1.7	0.0±0.0^**	0.0±0.0^*	7.1±0.1^**	4.3±0.0^**	18.3±0.2^**	60.0±0.0^**

品系名称 Breeding line	株高 Plant height (cm)	有效穗数 Number of panicles per plant	平均穗长 Average panicle length (cm)	每穗颖花数 Number of spikelets per plant	结实率 Seed- setting rate (%)	千粒重 1000-grain weight (g)	单株产量 Grain yield per plant (g)
CPPC09-180-28-1-5	91.8±1.8	11.8±1.2	23.5±0.9	153.5±13.4	63.8±6.6	19.9±0.8	23.1±4.3
FJ2161-1	87.9±1.7^**	12.4±1.1	25.5±1.3^**	149.8±14.8	58.1±2.5^*	18.3±0.4^**	19.7±3.0
FJ2161-2	86.0±3.0^**	12.0±2.3	25.3±0.7^**	152.4±8.5	57.8±7.9	18.2±1.0^**	19.0±3.0^*
FJ2162-1	86.5±1.6^**	11.0±1.6	24.6±0.5^**	138.9±5.3^*	57.1±6.8	17.8±0.6^**	15.7±4.4^**

Developing new rice lines with ultrashort-duration, long-grain, and fragrance

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品系名称 Breeding line	株高 Plant height (cm)	有效穗数 Number of panicles per plant	平均穗长 Average panicle length (cm)	每穗颖花数 Number of spikelets per plant	结实率 Seed-setting rate (%)	千粒重 1000-grain weight (g)	单株产量 Grain yield per plant (g)
CPPC09-180-28-1-5	74.6±1.0	9.3±2.3	19.7±0.3	150.4±8.0	63.1±7.4	23.8±1.3	25.2±6.5
FJ2161-1	67.8±3.3^*	9.0±1.2	20.7±0.7^*	129.3±8.9^*	51.6±3.8^*	20.2±0.7^**	12.1±1.7^*
FJ2161-2	65.7±4.1^*	8.3±1.3	20.3±0.7	128.7±9.1^*	46.9±3.5^*	20.1±0.7^**	10.1±2.1^**
FJ2162-1	70.1±3.3	9.5±2.6	20.6±0.2^**	124.5±9.4^*	48.0±2.9^*	20.9±0.9^*	11.8±3.1^*
象牙香占 Xiangyaxiangzhan	108.5±3.5^**	14.0±1.7^*	25.4±0.4^**	157.1±4.9	70.3±1.7	20.1±0.6^*	31.1±3.5

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