- 著者
- Phuong Dang Thai Phan Akinori Nishimura Chika Yamamoto Pham Thien Thanh Toshihiro Niwa Yaddehige Priya Jayantha Amarasinghe Ryo Ishikawa Takashige Ishii
- 出版者
- Japanese Society of Breeding
- 雑誌
- Breeding Science (ISSN:13447610)
- 巻号頁・発行日
- vol.73, no.4, pp.373-381, 2023 (Released:2023-10-03)
- 参考文献数
- 32
A total of four populations of reciprocal backcross recombinant inbred lines were produced from a cross between a wild accession of Oryza rufipogon W630 and two major cultivars, O. sativa Japonica Nipponbare and Indica IR36. Using these populations, quantitative trait locus (QTL) analysis for eight morphological traits (culm length, panicle length, days to heading, panicle shape, pericarp color, hull color, seed shattering and seed awning) was carried out, and the putative QTL regions were compared among the populations. The QTLs with strong allele effects were commonly detected for culm length, panicle shape, pericarp color and hull color in all four populations, and their peak locations were close to the major genes of sd1, Spr3, Rc and Bh4, respectively. For panicle length and days to heading, some QTL regions overlapped between two or three populations. In the case of seed shattering and seed awning, strong wild allele effects at major loci were observed only in the populations with cultivated backgrounds. Since the wild and cultivated alleles have never been evaluated in the reciprocal genetic backgrounds, the present results provide new information on gene effects in breeding and domestication studies.
- 著者
- Koji Numaguchi Shogo Ishio Yuto Kitamura Kentaro Nakamura Ryo Ishikawa Takashige Ishii
- 出版者
- The Japanese Society for Horticultural Science
- 雑誌
- The Horticulture Journal (ISSN:21890102)
- 巻号頁・発行日
- pp.UTD-013, (Released:2019-01-18)
- 被引用文献数
- 7
Japanese apricot (Prunus mume Sieb. et Zucc.) is one of the major fruit tree crops in Japan. However, a paucity of molecular tools has limited studies on the species’ genetic diversity and clone identification. Therefore, we newly designed 201 microsatellite markers using the P. mume reference genome and selected 20 highly polymorphic markers. The markers showed higher polymorphism detectability than those previously developed using peach and apricot genomes. They were used successfully for fingerprinting most of the Prunus cultivars examined (124 P. mume accessions and one accession each of P. armeniaca, P. salicina, P. persica, and P. dulcis), and the resulting genotype data were used to examine the genetic differentiation of six Japanese apricot cultivar groups, including those producing normal fruit, small-fruit, and ornamental flowers, as well as Taiwanese cultivars, putative hybrids of P. armeniaca and P. mume, and putative hybrids of P. salicina and P. mume. Phylogenetic cluster analysis showed three clades with high support values; one clade comprised the putative P. armeniaca × P. mume hybrids, and the two others included Taiwanese and ornamental cultivars. The rest of the accessions were grouped into two wide clusters, but not clearly divided into the respective cultivar groups. These complex relationships were supported by the principal coordinate and STRUCTURE analyses. Since Japanese apricot is thought to have originated in China, many factors such as human preference, geographical separation, introgression, and local breeding, may have been involved to form the present complex genetic structure in Japanese apricot.