
Breeding of determinate inflorescence new varieties of Brassica napus by molecular marker-assisted selection (MAS)
Kai-xiang LI, De-zhi DU
CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2023, Vol. 45 ›› Issue (1) : 30-37.
Breeding of determinate inflorescence new varieties of Brassica napus by molecular marker-assisted selection (MAS)
To improve the lodging resistance, Brassica napus determinate inflorescence line was used as donor parent crossed with a maintainer line 144B and other 4 superior restorer lines (111R, 122R, 361R, and 536R) respectively. Molecular markers closely linked with the determinate inflorescence genes Bnsdt1 and Bnsdt2 were used to assist the selection of the breeding in early generations. Results showed that 4 co-dominant molecular markers (S02, InDel02, BnW09 and BnW18) closely linked to determinate inflorescence genes Bnsdt1 and Bnsdt2 were screened out, and could be used for marker-assisted selection during backcross. Thud the maintainer line Y144B, sterile line Y144A and 4 superior restorer lines Y111R, Y122R, Y361R and Y536R with determinate inflorescence and obviously improved lodging resistance were developed. A new B. napus determinate inflorescence variety Qingza determinate 1, was then bred by hybridization and regional test, which had medium plant height, low branching, and improved lodging resistance.
Brassica napus / molecular marker-assisted selection (MAS) / determinate inflorescence / lodging resistance / variety breeding {{custom_keyword}} /
Fig. 3 Amplification results of InDel02 in BC3F2 population and P1 (indefinite), P2 (determinate)图3 InDel02在BC3F2群体中3种类型单株及P1(无限)和P2(有限)中的扩增 |
Table 1 Markers of foreground selection表1 前景选择的标记 |
标记 Marker | 标记类型 Marker type | 正向引物 Forward primer | 反向引物 Reverse primer | 连锁的基因 Linked gene |
---|---|---|---|---|
S02 | SSR | TTCCCTCCAAATCATGAAAGAG | GGAGTGGGTTTAAGATCTGAT | Bnsdt1 |
InDel02 | InDel | TACAGCCATCTTTACACACG | CTTGAGCCGTACAATGATCT | Bnsdt1 |
BnW09 | SSR | CTAATCAAGACAACAGCGCAAC | AGAAGACAAAAGCCCAGAAACA | Bnsdt2 |
BnW18 | SSR | AACAGAGCATACCAAGAGGCG | TCTTCTTTGTTTGTGGGTTCGT | Bnsdt2 |
Table 2 Markers and their sequences for background selection表2 背景选择的标记 |
标记 Marker | 染色体Chromosome | 正向引物 Forward primer | 反向引物 Reverse primer |
---|---|---|---|
InDel-1 | A01 | TTCCAAATCGCTCTGAACT | TTTTTATCCTCCCGCAAC |
InDel-2 | A01 | GAGATGTTTGTTAGGGACGA | CGGATGACAAAGATGCTAAT |
InDel-6 | A02 | ATCATCCTCGTTGTCTTCAT | AGATCGTTAACTCGTTGAGC |
InDel-7 | A02 | GCTGCTGAACACAGTCCTAC | GCCCTTTTATTTAACGGATT |
InDel-9 | A03 | GACTTCGTCATCAAACCATT | AAAGAGCTGAGCTGAATCTG |
InDel-11 | A03 | TTTCAGACAGAGGTGAAGGT | GACTTCATTATAAGCGTGGG |
InDel-14 | A04 | CCGTTATGTCTTTTTCTTGG | CGGTTCCTCACTACCTCTTA |
InDel-16 | A04 | CACATCACATCATCATCGTT | GTTACACAACGCACAAACAC |
InDel-17 | A05 | AATCTTAATTTTTAGTGCCACA | TCGTTGTTATCATGGTTTATTT |
InDel-18 | A05 | TGAGAAACTGACCAAAAGAAG | TTGAAACCCTACCTTCAAAA |
InDel-22 | A06 | CTGTTTTCTACTGCCACTCC | AACAATGAGGAGAAAACGAA |
InDel-24 | A06 | TCACTTCTTCCTCTGCATTT | AGGAGAATGAGTTCGCAGTA |
InDel-26 | A07 | ACAAGAAACAGAGGTTCCAA | TTGTGAGGTGGGTTCTTAAC |
InDel-27 | A07 | CTCTGTCTCTCCGTAAGTGG | ACTGTTCATCCGAACACTG |
InDel-29 | A08 | TTGGAGAAGAGGTTAGTTCG | TGTCTGATTACAACTTGCCA |
InDel-30 | A08 | TAAGGAAAAATGAATCGGAA | CTCTCAAGGATCGAAGTGTC |
InDel-33 | A09 | GTCTGTGCTTTTGGATGATT | TCTCCATCGTCTTTCATCA |
InDel-34 | A09 | TGAGTCTTATGGATCCAACC | ATGCTGATTATGATGGGAAC |
InDel-37 | A10 | TGGTAGTAGTGAGGTTTCGG | CAGAACACACTCCATCACTG |
InDel-38 | A10 | AATATGCGCTGTCTTTGTCT | CTTCACAGTCTGCTCCAAAC |
InDel-40 | A10 | ATTCAGATCTCCATCCCTTT | CCATGAATTGTTCTAATTGGT |
InDel-42 | C01 | TTAGAGACGCCCCAATAATA | AACAAAGACGCATTGAAACT |
InDel-43 | C01 | TAAACAAGTAACCTGCTCCC | AAACAGAGGTGGAAACAAGA |
InDel-46 | C02 | CCTCCTGTAGCTGTTAATGG | AGGAGCATCCCTAATGAAAT |
InDel-48 | C02 | CCTTCATCTGAGCAGTCTCT | AAAAGAAGGGACGGATAGTC |
InDel-49 | C03 | CATGGCATCTCTTCTCTCTC | CAAAATCAACGTAGGACCAT |
InDel-50 | C03 | GTCTAGGTCGCACTTGTTTC | GATCCATATGAATGCTGGTT |
InDel-54 | C04 | TAATTTTAAGGCGGTTTTGA | AATGTTTTTAAATGGATACCGT |
InDel-55 | C04 | CATGACGACAACGACAAATA | TTTATTTTGTTTTAGCCCCA |
InDel-58 | C05 | AATCACATGTGGTGAGACCT | TCCCACACTATCACAAATCA |
InDel-60 | C05 | ATTTTGTAGATCGTGGAAGG | GTTGATTTTGTTTCCAAAAAG |
InDel-61 | C06 | ATGAGGTGGTGAAGATGAAG | GATGAAGACAAGGCTCAAAC |
InDel-64 | C06 | GTCTGAAAGCATTCGTTTTT | AGATTACTCGGGCAGAGTTT |
InDel-65 | C07 | CCATCTTCATCATCATCTCC | ATGGAAAAGTTTTTGTCTGC |
InDel-67 | C07 | AAGAAAACAAAATCGGATCA | TCTTTGCTAATGGGCTTTTA |
InDel-70 | C08 | TCTTGTCGGGAATAATTGAC | TTCAAAAGGAAAAGGAGACTT |
InDel-72 | C08 | TAATTGCCATCTTCTTCCAC | AAAAGTTTGGAGCAGAGTTG |
InDel-73 | C09 | CTTGCGATTGTAACTCAACA | TGTGGGTTGAGAGCTTTAGT |
InDel-75 | C09 | TTTTCACACAAATCATCCAA | AATAAATGAAAACAAAAATCCG |
InDel-76 | C09 | TCCCAAGTGACTCTATCACC | ACCTCTCATATGCTTCTCCA |
Fig. 5 Field comparison of Y536R and its recurrent parent 536R图5 Y536R与轮回亲本536R田间对比图 |
Table 3 Analysis of agronomic traits of new maintainer and restorer lines表3 新的保持系与恢复系农艺性状分析 |
品系 Lines | 全生育期 Growth duration /d | 株高 Plant height /cm | 单株产量 Seed yield per plant /g | 小区产量 Plot yield /g | 倒伏指数 Lodging index |
---|---|---|---|---|---|
144B | 113.33±0.58a | 170.16±1.36A | 17.12±1.41a | 875.80±38.33a | 2.63±0.25a |
Y144B | 111.33±0.58b | 161.23±1.78B | 17.86±0.44a | 900.59±27.02a | 1.45±0.46b |
111R | 115.33±0.58a | 171.12±1.03A | 17.25±1.66a | 865.45±40.71a | 3.87±0.57a |
Y111R | 112.67±1.00a | 164.18±1.23B | 18.46±2.21a | 908.12±23.67a | 2.56±0.40b |
122R | 114.00±1.00a | 172.37±0.95A | 16.18±2.55a | 855.20±50.38a | 3.57±0.50a |
Y122R | 112.67±0.58a | 163.13±2.05B | 17.92±2.74a | 923.91±31.79a | 2.46±0.32b |
361R | 116.00±1.00a | 169.78±0.89a | 15.86±2.36a | 799.42±47.45a | 3.77±0.63a |
Y361R | 113.67±0.58b | 162.39±3.51b | 16.82±2.59a | 841.67±52.03a | 2.45±0.42b |
536R | 116.67±1.00A | 174.37±0.89A | 17.65±1.76a | 884.09±40.50a | 3.12±0.12a |
Y536R | 113.33±0.58B | 164.47±1.99B | 18.21±1.52a | 942.36±33.23a | 1.78±0.70b |
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