Oryza glumaepatulaSteud. introgression lines in rice: identification of genes for reproductive barriers

Sobrizal,; Matsuzaki, Yuichi; Ikeda, Kenichi; Sanchez, P. L.; Doi, Kouki; Yasui, Hirofumi; Ángeles, Enrique; Khush, G. S.; Yoshimura, Atsushi; Brar, D. S.; Hardy, B.

doi:10.1142/9789812814319_0051

Cited by 2 publications

(5 citation statements)

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“…Therefore, the gene identified in this study was considered as a novel gene and designated as hwf1 (hybrid weakness f-1) following the report on hwe1 [12]. Framework map on the left is quoted from HARUSHIMA, et al [16]. In this study, both O. glumaepatula (Acc.…”

Section: Resultsmentioning

confidence: 99%

“…RFLP analysis was conducted using BC 4 F 2 population in order to determine the chromosomal location of the gene that controls this weakness. Based on whole genome survey of candidate O. glumaepatula introgression lines, the BC 4 F 2 population used in this study has retained O. glumaepatula chromosomal segment on chromosome 4 and 6 [16]. Several RFLP markers located on chromosome 4 and 6 were used in linkage analysis.…”

Section: Resultsmentioning

confidence: 99%

“…Hybrid in-viability (or weakness) and hybrid sterility have been observed in inter-specific as well as in intra-specific crosses [2,3,4,5,6,7,8,9,10], while hybrid breakdown has been reported only in intra-specific crosses [2,11,12,13,14]. By using molecular linkage maps, some of the genes controlling reproductive barriers have been located on several chromosomes [8,9,10,12,13,15].…”

Section: Introductionmentioning

confidence: 99%

“…In a previous study [16], a series of Oryza glumaepatula (IRGC 105668) introgression lines with O. sativa cv. Taichung 65 genetic back-ground was developed by backcrossing and marker assisted selection methods.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Weakness Found in the Backcross Progeny of an Inter-Specific Cross of Oryza Sativa / O. Glumaepatula

Sobrizal

Yoshimura

2011

Atom Indo.

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HYBRID WEAKNESS FOUND IN THE BACKCROSS PROGENY OF AN INTER-SPECIFIC CROSS OFORYZA SATIVA / O. GLUMAEPATULA. Hybrid breakdown expressed as sterility or weakness or both in F 2 or later generations is considered to be a reproductive barrier between two distantly related taxa. Hybrid breakdown that showed poor growth habit with fertile seeds was found in the backcross progenies (BC 4 F 2 ) which were derived from a cross between a cultivated rice Oryza sativa L. cv. Taichung 65 and a wild rice Oryza glumaepatula Steud (Acc. IRGC 105668) where Taichung 65 was used as a recurrent parent. Through segregation analysis of BC 4 F 2 population, a novel gene for weakness was identified, and this gene was designated as hwf1 (hybrid weakness f-1). RFLP (Restriction Fragment Length Polymorphism) analysis was employed to determine the chromosomal location of hwf1 gene. The result revealed that hwf1 was located between G3006 and C933 RFLP markers, with map distances of 0.5 cM and 1.9 cM, respectively, and co-segregated with C708, C820, and R288 on the short arm of chromosome 4. Since both O. glumaepatula (Acc. IRGC 105668) and Taichung 65 that was used as parents showed normal growth habit, the weakness in this study was assumed to be controlled by a set of complementary recessive genes. One of the complementary genes is hwf1 from O. glumaepatula, and another gene should be from Taichung 65, because the genetic background of the BC 4 F 2 populations that were used for analysis is Taichung 65. The gene from Taichung 65 has not been identified yet, therefore, it is necessary to conduct the experiment for finding out the complement of hwf1 gene in near future.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hybrid Weakness Found in the Backcross Progeny of an Inter-Specific Cross of Oryza Sativa / O. Glumaepatula

Sobrizal

Yoshimura

2011

Atom Indo.

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“…22 However, due to linkage barriers, the introduction of target traits always combined with the unfavorable traits. 23 Actually, the interspecific ILs constructed by wild and cultured populations are commonly used as a recurrent parent used in pre-breeding and QTL mapping. 24 A previous study has shown that ILs of pepper can be used to fine map the location of the traits in the chromosome responsible for fruit production.…”

Section: Discussionmentioning

confidence: 99%

Cold-tolerant introgression line construction and low-temperature stress response analysis for bell pepper

Zhenhua

et al. 2020

Plant Signaling & Behavior

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We aimed to screen cold-tolerant introgression lines (ILs) of bell pepper and investigate stress responses of these bell peppers under low temperature. Seedlings of cold-resistant wild-type bell pepper CA157, cultivated bell pepper CA52, and their ILs were evaluated for their tolerance to low temperature. Electrical conductivity measurement was performed on ILs and two parents. Then, contents of physiological and biochemical indexes including malondialdehyde (MDA), proline, and soluble sugar content were examined. Moreover, the superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and peroxidase (POD) activities were further investigated. Finally, the chlorophyll fluorescence (PSII) parameters in all pant leaves were examined.A total of 22 IL plants showed better resistance than their recurrent parent CA52. CL122 was one of the most outstanding plants in ILs that had similar performance with wild bell pepper CA157. Cold resistance analysis based on physiological and biochemical indexes showed that factors such as electrical conductivity, MDA, and PSII were closely related to cold resistance among CA157, CA52, and CL122 under low-temperature stress. In conclusion, ILs constructed in the current study might be used for cold resistance gene introgression between wild and cultured species. Moreover, CL122 might be a novel bridge material for understanding low-temperature response in bell pepper. Furthermore, electrical conductivity, MDA, and PSII might be used to identify the low-temperature resistance of bell pepper plants in a period of obvious differentiation.

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Oryza glumaepatulaSteud. introgression lines in rice: identification of genes for reproductive barriers

Cited by 2 publications

References 3 publications

Hybrid Weakness Found in the Backcross Progeny of an Inter-Specific Cross of <em>Oryza Sativa / O. Glumaepatula</em>

Hybrid Weakness Found in the Backcross Progeny of an Inter-Specific Cross of <em>Oryza Sativa / O. Glumaepatula</em>

Cold-tolerant introgression line construction and low-temperature stress response analysis for bell pepper

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