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Article
Different contributions of PROG1 and TAC1 to the angular kinematics of the main culm and tillers of wild rice (Oryza rufipogon)
PROG1 is necessary but insufficient for the main culm inclination while TAC1 partially takes part in it, and both genes promote tiller inclination in Asian wild rice.
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Article
Open AccessIdentification of a Saltol-Independent Salinity Tolerance Polymorphism in Rice Mekong Delta Landraces and Characterization of a Promising Line, Doc Phung
The Mekong Delta River in Vietnam is facing salinity intrusion caused by climate change and sea-level rise that is severely affecting rice cultivation. Here, we evaluated salinity responses of 97 rice accessio...
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Article
Characterization of QTLs for grain weight from New Plant Type rice cultivars through the development of near-isogenic lines with an IR 64 background
Grain weight (GW), one of the yield components of rice (Oryza sativa L.), is an important trait for improving rice productivity. In the 1990s, New Plant Type (NPT) rice breeding focused on improving the yield pot...
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Article
Open AccessResponses of earliness and lateness genes for heading to different photoperiods, and specific response of a gene or a pair of genes to short day length in rice
Heading time is an important trait for regional and seasonal adaptabilities in rice, and is controlled by genetic factors in relation with environmental factors, mainly day length and temperature. The followin...
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Article
Open AccessAnther culture in rice proportionally rescues microspores according to gametophytic gene effect and enhances genetic study of hybrid sterility
To investigate plant hybrid sterility, we studied interspecific hybrids of two cultivated rice species, Asian rice (Oryza sativa) and African rice (O. glaberrima). Male gametes of these hybrids display complete s...
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Article
Identification of QTLs and candidate genes for days to heading in an upland New Rice for Africa (NERICA) variety
To produce rice varieties adaptable to unfavorable environments in Africa, New Rice for Africa (NERICA) varieties have been developed by inter-specific crossings. The basic idea of NERICA was to combine the us...
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Article
Detection of novel blast resistance genes, Pi58(t) and Pi59(t), in a Myanmar rice landrace based on a standard differential system
The use of broad-spectrum R genes is an effective way to achieve durable resistance against rice blast (Magnaporthe oryzae Couch, anamorph: Pyricularia oryzae Cavara) in rice (Oryza sativa L.). We previously surv...
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Article
QTL for spikelet number from a high-yielding rice variety, Hoshiaoba, detected in an introgression line with the genetic background of an indica rice variety, IR64
Total spikelet number per panicle (TSN) is thought to be one of the most important agronomic traits associated with grain production in rice (Oryza sativa L.). We previously reported the development of 334 introg...
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Article
Fine map** and identification of tightly linked DNA markers of blast resistance gene Pia by using an introgression line
An introgression line (INL) for a major rice blast resistance gene, Pia, was developed, with the genetic background of a blast susceptible variety, US-2. The reaction pattern of the INL was characterized by using...
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Article
A set of near-isogenic lines of Indica-type rice variety CO 39 as differential varieties for blast resistance
Twenty-seven near-isogenic lines (NILs) with the genetic background of a blast-susceptible variety, CO 39, were developed by repeated backcrossing as a first set of a large number of differential varieties (DV...
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Article
Two loosely linked genes controlling the female specificity for cross-incompatibility in rice
Cross-incompatibility caused by endosperm abortion was found in advanced generations of backcrossing between the Asian wild (W593) and cultivated (T65wx) rice strains. The near isogenic line, T65WxS ...
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Genetics of Speciation in Rice
One of the central issues of evolutionary biology is the origin of the species, although the definition of species is an endlessly debated issue (Coyne and Orr 2004). According to the biological species concep...