Comparison of Morphological and Genetic Differentiations in Filial Generation of Cross Between Indica and Japonica Rice

Mei, Ting; Xu, Hai Jun; Xu, Quan; Yan-hua, Guo; Chunjie, Zhu; Chen, Kai; Wang, Jiayu; Xu, Zhenbo

doi:10.1016/s1672-6308(08)60108-0

Cited by 3 publications

(5 citation statements)

References 8 publications

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“…Therefore, grain length and width have become one of the reference indicators for selecting male-sterile lines with early DFOT traits [39]. It is worth noting that there is a certain correlation between rice DFOT and the number of leaf hairs, glume hair characteristics, and seed staining degree with phenol [40]. The rice varieties with fewer leaf hairs or seeds that are easily stained with phenol will reach the peak flower opening time later, and the varieties with longer, more disordered, and softer glume hairs generally show earlier DFOTs and have a longer diurnal flower opening duration.…”

Section: The Factors Affecting the Regulation Of Dfotmentioning

confidence: 99%

“…The average daily temperature affects the DFOT of rice. High temperatures facilitate early flower opening, but excessively high or low temperatures affect the overlapping of the DFOTs of the parents [40]. A high temperature during the flower opening period mainly changes the opening dynamics and physiological characteristics of the rice spikelets, reduces the anther dehiscence rate and pollen vitality, and lowers the seed setting rate, resulting in reduced rice production [16,63].…”

Section: The Influence Of Environmental Factors On Dfotmentioning

confidence: 99%

“…Nipponbare, late flower opening), and mapped three QTL loci controlling DFOT on chromosomes 4, 5, and 10 by conducting QTL analysis using the BC 2 F 8 backcross population [72]. Ma et al mapped six QTL loci on chromosomes 1, 2, 7, 8, 10, and 12 using the hybrid-derived recombinant inbred line population developed by a cross between the indica rice variety "Qiuguang" and the japonica rice variety "Qishanzhan" [40]. Wan et al mapped four QTL loci on chromosomes 1, 10, and 12 using the F 2 population generated by hybridization between the early DFOT indica rice variety WAB368-B-2-H2-HB and the late DFOT indica rice variety Liuqianxin [73].…”

Section: Cloning and Molecular Mechanism Studies Of Dfot Genesmentioning

confidence: 99%

“…In the previous studies, a dozen QTLs controlling the DFOT in rice were mapped by different research groups using forward genetics [17,40,[72][73][74]. However, specific genes corresponding to these QTLs have not been cloned yet.…”

Section: Prospects Of the Research Of Rice Dfot Genesmentioning

confidence: 99%

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Advances on the Study of Diurnal Flower-Opening Times of Rice

Wang

Chen

Huang

et al. 2023

IJMS

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The principal goal of rice (Oryza sativa L.) breeding is to increase the yield. In the past, hybrid rice was mainly indica intra-subspecies hybrids, but its yield has been difficult to improve. The hybridization between the indica and japonica subspecies has stronger heterosis; the utilization of inter-subspecies heterosis is important for long-term improvement of rice yields. However, the different diurnal flower-opening times (DFOTs) between the indica and japonica subspecies seriously reduce the efficiency of cross-pollination and yield and increase the cost of indica–japonica hybrid rice seeds, which has become one of the main constraints for the development of indica–japonica hybrid rice breeding. The DFOT of plants is adapted to their growing environment and is also closely related to species stability and evolution. Herein, we review the structure and physiological basis of rice flower opening, the factors that affect DFOT, and the progress of cloning and characterization of DFOT genes in rice. We also analyze the problems in the study of DFOT and provide corresponding suggestions.

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Section: The Factors Affecting the Regulation Of Dfotmentioning

confidence: 99%

Section: The Influence Of Environmental Factors On Dfotmentioning

confidence: 99%

Section: Cloning and Molecular Mechanism Studies Of Dfot Genesmentioning

confidence: 99%

Section: Prospects Of the Research Of Rice Dfot Genesmentioning

confidence: 99%

See 2 more Smart Citations

Advances on the Study of Diurnal Flower-Opening Times of Rice

Wang

Chen

Huang

et al. 2023

IJMS

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“…Use of simple sequence repeats (SSRs), also known as the microsatellite DNA markers, is one of the most effective tools for identifying genetic differences among germplasm resources with advantages of convenience, simplicity, high polymorphism, codominance and stability (Liao et al 2011). Thus, it is widely applied in characterizing genetic diversity of germplasm resources, especially in identifying species having close genetic relationships (Mao et al . 2010).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity in a set of rice (Oryza sativa L.) genotypes using molecular markers

Kaur

Khanna

et al. 2021

Journal of Cereal Research

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The assessment of genetic diversity in the germplasm is an essential pre requisite for a breeding programme. In the present study genetic diversity was analysed in a set of 94 genotypes evaluated for various yield attributes under high temperature stress using 48 SSR primers. A total of 129 alleles were detected by 48 primers among 94 rice genotypes with an average of 2.7 alleles per primer. The number of alleles generated by each marker varied from 1 to 4. The Polymorphism Information Content values ranged from 0.19 to 0.60 with an average of 0.41. Twenty six SSR primers revealed PIC values higher than the average. The genetic dissimilarity index ranged from 0.04 to 0.92. The dendrogram generated using DAR with indicated that the 94 genotypes were clustered into three distinct clusters with two sub clusters in each cluster. The selected genotypes will be useful in the on-going breeding programme and will help in broadening the genetic base of the breeding material

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Đa dạng đặc điểm hình thái của 147 giống lúa rẫy

Chung¹,

Huỳnh²,

Lê³

et al. 2021

CTUJSVN

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Lúa rẫy là giống lúa được canh tác trên vùng cao, trong điều kiện hạn chế nước tưới. Đây là nguồn gene quý để nghiên cứu về đặc tính kháng hạn, tuy nhiên ít được quan tâm và phát triển. Vì vậy, bảo tồn và khảo sát đặc tính hình thái được thực hiện nhằm tìm ra các đặc tính quý mà các nhà chọn giống quan tâm, và cung cấp thông tin cho công tác bảo tồn nguồn gene quý. Sau khi khảo nghiệm 147 giống lúa rẫy, kết quả chọn được 15 giống ưu tú với đặc điểm sau: tất cả các giống đều có màu phiến lá xanh, gốc lá cờ thẳng, độ cứng thân ở mức cấp 1 và hạt không râu; trong đó chia được làm 4 phân nhóm dựa vào kiểu bông và độ trổ bông: nhóm 1 (Ba Cong, Kreng, Mơ Dai Tăng) có kiểu bông túm và trổ bông tốt; nhóm 2 (Bakelao, Cbr, Mơ Dai Gor, Nâm, San Dong và Thong Nong Ếpla) kiểu bông trung bình, độ trổ tốt; nhóm 3 (Gor, Lúa Thơm Rằn, Lúa Xăng, Lúa Dung) kiểu bông trung bình, độ trổ trung bình; nhóm 4 (Lúa đỏ và Pkoih) kiểu bông túm và độ trổ bông trung bình. Kết quả khảo sát đặc tính hình thái là bước đầu góp phần tuyển chọn được giống lúa có các đặc điểm tốt cho nghiên cứu chuyên sâu trong tương lai.

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Comparison of Morphological and Genetic Differentiations in Filial Generation of Cross Between Indica and Japonica Rice

Cited by 3 publications

References 8 publications

Advances on the Study of Diurnal Flower-Opening Times of Rice

Advances on the Study of Diurnal Flower-Opening Times of Rice

Genetic diversity in a set of rice (Oryza sativa L.) genotypes using molecular markers

Đa dạng đặc điểm hình thái của 147 giống lúa rẫy

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