Effects of Dwarfing Genes from Dee-geo-woo-gen and Other Varieties on Cool Temperature Tolerance at Booting Stage in Rice.

Murai, Masayuki; Hirose, Shohei; Sato, Seisho; Takebe, Masaki

doi:10.1270/jsbbs1951.41.241

Cited by 24 publications

(22 citation statements)

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“…Similar results were obtained using the genetic backgrounds of Norin-PL8 and 'Tamanishiki' (Murai et al 1991a(Murai et al , 2003. These results indicate that d18-k activates pollen development as well as pollen differentiation resulting in the reduction of cool-temperature damage to pollen.…”

Section: Discussionsupporting

confidence: 80%

“…It is inferred that PL11 contains gene(s) which reduces cooltemperature injury to pollen development. The gene, d18-k exerted the pleiotropic effect of enhancing the cool tolerance at the booting stage under various genetic backgrounds including Norin-PL8 (Murai et al 1991a, 1991b, Murai et al 2003. The L 5 of D11 was higher than that of PL11 in FS-T/C as well as in spikelet fertility (Table 2 and Table 4).…”

Section: Discussionmentioning

confidence: 99%

“…The treated panicles in each line were grouped in accordance with the number of days before flowering from the final day of the CA or DW treatment, and the mean value of each day-group was calculated for spikelet fertility, SN-T/C and FS-T/C, in order to examine the relation between cool susceptibility and panicle development stages. In previous papers (Murai et al 1991a, 1991b, Murai et al 2003, the L 5 , viz. the mean value of the lowest five spikelet fertilities on five consecutive days in each line/cultivar, was used for evaluating the cool tolerances of lines and cultivars.…”

Section: Evaluation Of Cool Tolerancementioning

confidence: 99%

“…D11 had a larger ripened pollen grain number per anther than PL11. These traits of D11 are due to the effects of d18-k (Murai et al 1982, 1991a, 1991b, 2003, Murai and Kinoshita 1983a, 1983b, Murai 1999.…”

Section: Measurements On Anthers and Pollenmentioning

confidence: 99%

“…the increase of differentiated pollen grain number per anther and the decrease of cool-temperature injury to pollen development (Murai et al 1991a(Murai et al , 1991b(Murai et al , 2003. Moreover, d18-k produces the characteristic panicle type with fewer secondary branches (Murai andKinoshita 1983b, Murai 1999), resulting in less cool-temperature damage in spikelet number per panicle (Murai et al 2003).…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Dwarfing Gene d18-k on Cool Tolerance at Booting Stage under the Genetic Background of an Extremely Cool-tolerant Rice Line Norin-PL11, and its Relation with Water Depth

Murai

Yoshida

2003

Breed. Sci.

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Norin-PL11 (PL11) is a highly cool-tolerant line which contains genes for cool tolerance introduced from 'Padi Labou Alumbis', a landrace of Borneo. We investigated whether the dwarfing gene d18-k (kotaketamanishiki dwarf) exerts its pleiotropic effect of enhancing the cool tolerance at the booting stage under the genetic background of PL11, using the d18-k isogenic line of the recurrent parent PL11 (D11). During the booting stage, two cool-air treatments at 12°C for five days with and without deep water of 15 cm depth (DW and CA treatments, respectively) were conducted in growth chambers illuminated at about 600 Omol PAR m −2 s −1 . Besides spikelet fertility, the ratio (%) of the fertilized-spikelet number of each treated panicle to the varietal mean of fertilized-spikelet number per panicle in the control, viz. FS-T/C was adopted in order to estimate the extent of cool damage including the factor of spikelet degeneration. The CA treatment induced notable spikelet degeneration in PL11, but not in D11. The parameter L 5 , which is the average of the lowest five FS-T/C values (or spikelet fertilities) on five consecutive days in each line, was used for evaluating the cool tolerances of the lines. In the CA treatment, D11 had a higher L 5 in FS-T/C than PL11, indicating that D11 is more cool-tolerant than PL11. D11 showed a significantly higher L 5 of FS-T/C in the DW treatment than in the CA treatment, but PL11 showed no significant difference of L 5 between the CA and DW treatments. Similar results were obtained for spikelet fertility. In D11, almost the whole panicle at the most susceptible stage was under the surface of the deep water. On the other hand, the whole panicle was above the water surface at that stage in PL11. Consequently, D11 almost eluded the damage from the severe cool-air treatment when combined with the deep water. D11 exceeded PL11 not only in ripened pollen grain number per anther in the control but also in an indicator of pollen fertility after the CA treatment, owing to the effects of d18-k. It is concluded that d18-k may be useful for developing super-highly cool-tolerant cultivars for cool-weather areas.

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Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Evaluation Of Cool Tolerancementioning

confidence: 99%

Section: Measurements On Anthers and Pollenmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of the Dwarfing Gene d18-k on Cool Tolerance at Booting Stage under the Genetic Background of an Extremely Cool-tolerant Rice Line Norin-PL11, and its Relation with Water Depth

Murai

Yoshida

2003

Breed. Sci.

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QTLs conferring cold tolerance at the booting stage of rice using recombinant inbred lines from a japonica × indica cross

2003

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Low temperature stress is common for rice grown in temperate regions and at high elevations in the tropics. The most senstive stage to this stress is booting, about 11 days before heading. Japonica cultivars are known to be more tolerant than indicas. We constructed a genetic map using 191 recombinant inbred lines derived from a cross between a temperate japonica, M-202, and a tropical indica, IR50, in order to locate quantitative trait loci (QTLs) conferring cold tolerance. The map with a total length of 1,276.8 cM and an average density of one marker every 7.1 cM was developed from 181 loci produced by 175 microsatellite markers. Cold tolerance was measured as the degree of spikelet sterility of treated plants at a 12 degrees C temperature for 5 days in the growth chamber. QTLs on chromosomes 1, 2, 3, 5, 6, 7, 9 and 12 were identified to confer cold tolerance at the booting stage. The QTL contribution to the phenotypic variation ranged from 11 to 17%. The two QTLs with the highest contribution to variation, designated qCTB2a and qCTB3, were derived from the tolerant parent, M-202, each explaining approximately 17% of the phenotypic variance. Two of the eight QTLs for cold tolerance were contributed by IR50.

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Identification and analysis of QTLs controlling cold tolerance at the reproductive stage and validation of effective QTLs in cold-tolerant genotypes of rice (Oryza sativa L.)

Suh

Jeung²,

Lee³

et al. 2009

Theor Appl Genet

154

122

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Low temperature or cold stress is one of the major constraints of rice production and productivity in temperate rice-growing countries and high-altitude areas in the tropics. Even though low temperature affects the rice plant in all stages of growth, the percent seed set is damaged severely by cold and this reduces the yield potential of cultivars significantly. In this study, a new source of cold-tolerant line, IR66160-121-4-4-2, was used as a donor parent with a cold-sensitive cultivar, Geumobyeo, to produce 153 F(8) recombinant inbred lines (RILs) for quantitative trait locus (QTL) analysis. QTL analysis with 175 polymorphic simple sequence repeat (SSR) markers and composite interval mapping identified three main-effect QTLs (qPSST-3, qPSST-7, and qPSST-9) on chromosomes 3, 7, and 9. The SSR markers RM569, RM1377, and RM24545 were linked to the identified QTLs for cold tolerance with respect to percent seed set using cold-water (18-19 degrees C) irrigation in the field and controlled air temperature (17 degrees C) in the greenhouse. The total phenotypic variation for cold tolerance contributed by the three QTLs was 27.4%. RILs with high percent seed set under cold stress were validated with linked DNA markers and by haplotype analysis that revealed the contribution of progenitor genomes from the tropical japonica cultivar Jimbrug (Javanica) and temperate japonica cultivar Shen-Nung89-366. Three QTLs contributed by the cold-tolerant parent were identified which showed additive effect on percent seed set under cold treatment. This study demonstrated the utility of a new phenotyping method as well as the identification of SSR markers associated with QTLs for selection of cold-tolerant genotypes to improve temperate rice production.

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Effects of Dwarfing Genes from Dee-geo-woo-gen and Other Varieties on Cool Temperature Tolerance at Booting Stage in Rice.

Cited by 24 publications

References 10 publications

Effect of the Dwarfing Gene d18-k on Cool Tolerance at Booting Stage under the Genetic Background of an Extremely Cool-tolerant Rice Line Norin-PL11, and its Relation with Water Depth

Effect of the Dwarfing Gene d18-k on Cool Tolerance at Booting Stage under the Genetic Background of an Extremely Cool-tolerant Rice Line Norin-PL11, and its Relation with Water Depth

QTLs conferring cold tolerance at the booting stage of rice using recombinant inbred lines from a japonica × indica cross

Identification and analysis of QTLs controlling cold tolerance at the reproductive stage and validation of effective QTLs in cold-tolerant genotypes of rice (Oryza sativa L.)

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