Scientia Agricultura Sinica ›› 2024, Vol. 57 ›› Issue (22): 4391-4401.doi: 10.3864/j.issn.0578-1752.2024.22.001

• CROP GENETICS & BREEDING·GERMPLASM RESOURCES·MOLECULAR GENETICS • Previous Articles     Next Articles

Genetic Composition Analysis of a New High Quality and High Yield Wheat Cultivar Taikemai33

QI XiaoLei1(), WANG Jun2, LÜ GuangDe1, MU QiuHuan1, MI Yong1, SUN YingYing1, YIN XunDong1, QIAN ZhaoGuo1(), WANG RuiXia1, WU Ke1   

  1. 1 Tai’an Academy of Agricultural Sciences, Taian 271000, Shandong
    2 Tai'an Agricultural and Rural Bureau, Taian 271000, Shandong
  • Received:2024-05-09 Accepted:2024-05-15 Online:2024-11-16 Published:2024-11-22
  • Contact: QIAN ZhaoGuo

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Abstract:

【Objective】Taikemai33, derived from a cross between Zhengmai366 and Huaiyin9908, is a new released wheat cultivar with high quality, high yield, and excellent disease resistance, which has a broad genetic base, and a high potential for application in wheat production. The objective of this study is to dissect the genetic composition of Taikemai33 to provide information for parental selection to use this cultivar to develop more new wheat cultivars. 【Method】Taikemai33 and its pedigree parents including Zhengmai366, Huaiyin9908, Yumai47, PH82-2-2, Yumai13, Yumai 2 hao, Bainong3217, Yanda24, Xiannong39, Fengchan 3 hao and Funo were screened using the 55K wheat SNP chip to dissect the genomic composition of Taikemai33 to evaluate the genetic contributions of each parental line to Taikemai33. 【Result】The similarity coefficient between Taikemai33 and its pedigree parents ranged from 0.72 to 0.93, and the genetic composition of Taikemai33 was highly similar to Zhengmai366, the pedigree mother parent, with a genetic similarity coefficient of 0.93. SNP marker analysis showed that the pedigree parents contributed different proportion to the genome of Taikemai33, with the pedigree mother contributed 66.57%, whereas the pedigree father contributed 33.43%, indicating that Taikemai 33 inherits more genetic materials from the maternal lineage. Furthermore, the pedigree mother contributed 71.0%, 85.0% and 49.4% to subgenome A, B and D of Taikeimai33, whereas those were 29.0%, 15.0% and 50.6% contributed by the pedigree father. For each chromosome, the pedigree mother contributed more on chromosome 1A, 2A, 3A, 4A, 7A, 1B to 7B, 1D and 2D, whereas the pedigree father contributed more on chromosome 5A, 4D, 6D and 7D. The contributions of the pedigree parents on 6A, 3D and 5D were equal. Taikemai33 genotype map showed that the contribution loci of the pedigree mother were distributed in clusters on chromosome 1A, 5A, 7A, 2B, 7B, 2D, with those from the pedigree father were on chromosome 4A, 5A, 6D, 7D. Interestingly, among the polymorphic SNP loci, between Zhenmai366 and Huaiyin9908, Taikemai33 showed 109 loci that were absent in both parents, distributing on 19 chromosomes except 1A and 6A. Chromosome 4A, 2B, 6B and 7D of Taikemai33 confer most of the polymorphic SNPs in clusters with cluster number of 10, 9, 11, and 9. 【Conclusion】We constructed the genotype map and dissected the genetic composition of Taikemai33, determined the loci contributed by the pedigree parents and identified that Taikemai33 inherited more genetic materials from the pedigree mother and conferring some specific loci different with the pedigree parents.

Key words: wheat, genetic map, pedigree parents, SNP, genetic components

Table 1

Varieties, their pedigrees and released time"

品种（品系）
Variety (line) name		 系谱
Pedigree		 审（认）定年份
Released time
泰科麦33 Taikemai33 郑麦366/淮阴9908 Zhengmai366/Huaiyin9908 2018
郑麦366 Zhengmai366 豫麦47/PH82-2-2 Yumai47/PH82-2-2 2005
淮阴9908 Huaiyin9908 豫麦13/淮阴83209 Yumai13/Huaiyin83209
豫麦47 Yumai47 豫麦2号/百泉3199 Yumai2hao/Baiquan3199 1997
PH82-2-2 长穗偃麦草/普通小麦混合授粉 Elytrigia elongata/Wheat mixed pollination 1991
豫麦13 Yumai13 百农3217/9612-2 Bainong3217/9612-2 1989
豫麦2号Yumai2 hao 65(14)3/抗辉红 65(14)3/Kanghuihong 1990
百农3217 Bainong3217 阿夫/内乡5号//咸农39/3/西农64/偃大24 Funo/Neixiang5hao//Xiannong39/3/Xinong64/Yanda24 1984
偃大24 Yanda24 郑州6号/丰产3号 Zhengzhou6hao/Fengchan3 hao 1970
咸农39 Xiannong39 西农6028/水源86 Xinong6028/Suwon86 1964
丰产3号Fengchan3hao 丹麦1号/西农6028 Danmai1hao/Xinong6028 1971
阿夫Funo Duecentodieci/Damiano 1956

Fig. 1

UPGMA cluster trees of Taikemai33 and its pedigree parents"

Table 2

Genetic contribution of Taikemai33’parents toTaikemai33 with SNP markers"

系谱母本
Pedigree mother		 差异位点总数
No. of total differential loci		 差异位点数
No. of differential loci		 贡献率
Contribution rate (%)		 系谱父本
Pedigree father		 差异位点总数
No. of total differential loci		 差异位点数
No. of differential loci		 贡献率
Contribution rate (%)
郑麦366
Zhengmai366		 1370 912 66.57 淮阴9908
Huaiyin9908		 1370 458 33.43
PH82-2-2 1370 348 25.40 豫麦13 Yumai13 1370 295 21.53
豫麦47
Yumai47		 1370 783 57.15 百农3217
Bainong3217		 1370 227 16.57
豫麦2号
Yumai 2 hao		 1370 592 43.21 偃大24
Yanda24		 1370 191 13.94
丰产3号
Fengchan 3 hao		 1370 267 19.49 丰产3号
Fengchan 3 hao		 1370 173 12.63
咸农39
Xiannong39		 1370 345 25.18 咸农39
Xiannong39		 1370 173 12.63
阿夫 Funo 1370 170 12.41

Fig. 2

Percentages of the pedigree parents contributions to Taikemai33 on different chromosomes and genomes based on SNP data"

Fig. 3

Genotypic maps of Taikemai33"

Table 3

The number of SNP, genome (A, B and D) distribution and homoeologous groups (H1-H7) distribution in different parent cultivars"

系谱亲本
Parent cultivars		 名称
Name		 总数
Total		 A B D H1 H2 H3 H4 H5 H6 H7
系谱母本
Pedigree mother		 郑麦366 Zhengmai366 79 4 50 25 21 5 3 3 44 2 1
PH82-2-2 40 6 24 10 4 4 7 3 18 0 4
豫麦47 Yumai47 134 27 64 43 18 29 26 11 14 10 26
豫麦2号Yumai 2 hao 102 18 50 34 6 41 7 5 6 10 27
丰产3号Fengchan 3 hao 50 8 37 5 6 2 10 1 20 2 9
咸农39 Xiannong39 80 17 9 54 9 10 4 4 6 4 43
系谱父本
Pedigree father		 淮阴9908 Huaiyin9908 154 45 27 82 20 19 8 9 60 25 13
豫麦13 Yumai13 65 19 13 33 11 5 5 12 16 11 5
百农3217 Bainong3217 25 1 0 24 0 0 0 0 1 3 21
偃大24 Yanda24 5 1 0 4 0 0 0 0 2 0 3
丰产3号Fengchan 3 hao 15 4 2 9 0 0 2 0 4 0 9
咸农39 Xiannong39 4 0 2 2 0 1 0 0 1 1 1
阿夫Funo 0 0 0 0 0 0 0 0 0 0 0
泰科麦33 Taikemai33 109 23 52 34 8 20 12 22 12 18 17
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