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Kengo NAKATA, Hiroshi TANAKA, Keiji YANO, Masamichi TAKAGI
1992 Volume 42 Issue 3 Pages
487-495
Published: September 01, 1992
Released on J-STAGE: April 18, 2008
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Masayuki HAISHIMA, Hiroshi IKEHASHI
1992 Volume 42 Issue 3 Pages
497-505
Published: September 01, 1992
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Tsukasa NAGAMlNE, Jian Hua XIONG, Qing XIAO
1992 Volume 42 Issue 3 Pages
507-513
Published: September 01, 1992
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Yasuhiro TAKAHATA, Takahiro NODA, Tadahiro NAGATA
1992 Volume 42 Issue 3 Pages
515-521
Published: September 01, 1992
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A.B. M. MAMUN HOSSAlN, Hidetoshi KISHIKAWA, Yutaka TAKAGI
1992 Volume 42 Issue 3 Pages
523-534
Published: September 01, 1992
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Moxi LI, Toshinori ABE, Yuzo FUTSUHARA
1992 Volume 42 Issue 3 Pages
535-543
Published: September 01, 1992
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Tadashi KUMAGAI, Tadashi SATO
1992 Volume 42 Issue 3 Pages
545-552
Published: September 01, 1992
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Hiroaki MACHII
1992 Volume 42 Issue 3 Pages
553-559
Published: September 01, 1992
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Yoshio SANO
1992 Volume 42 Issue 3 Pages
561-572
Published: September 01, 1992
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Abdelbagi Mukhtar ALI, Noboru NAKATA, Motonori TOMITA, Yoshimasa YASUM ...
1992 Volume 42 Issue 3 Pages
573-582
Published: September 01, 1992
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Hitoshi KOBAYASHI, Mitsuyoshi OKII, Takayasu HIROSAWA
1992 Volume 42 Issue 3 Pages
583-594
Published: September 01, 1992
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Masahiro OKAMOTO, Toshiro HORINO, Makoto SAKAI
1992 Volume 42 Issue 3 Pages
595-603
Published: September 01, 1992
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The relation of nitrogen content and Mg/K chemical equivalent ratio to varietal difference in stickiness of cooked rice of nonwaxy japonica rice in war]TLer area were evaluated. 30 varieties ih 1984 and 35 varieties in 1986 were grown on the Institute's farm. The stickiness of varieties was evaluated by sensory test. The scale employed for the test was 1 1 grades from 5 (much more sticky than Nipponbare) to - 5 (not very well sticky com-pared with Nipponbare), and the stickiness ranged from - 1.04 to 1.00 in 1984 and - 0.79 to 1.00 in 1986, respectively. The samples of 1984 ranged in composition from 1.20 to 1.54% for nitrogen and 1.17 to 1.73 for Mg/K ratio. The samples of 1986 ranged in com-position from 1.02 to 1.51% for nitrogen and 1.23 to 1.73 for Mg/K ratio. Stickiness cor-related negatively with nitrogen content, but the correlation coefficient in 1984 was not siguificant. Since the coefficient of variation of nitrogen content in 1984 was small compared with that in 1986, no significance of the correlation coefficient in 1 984 may be due mainly to its narrow varietal difference of nitrogen content. On the other hand, the correlation be-tween stickiness and Mg/K ratio was positively significant in each year (Table 2).
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Atsuo INAZU, Masami MATO
1992 Volume 42 Issue 3 Pages
605-613
Published: September 01, 1992
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In Cosmos bipinnatus CAV., besides the three genes: C. I and Sp which are responsible for the expression of the cyanic and the white flower colors, there are several genes involved in the expression of the yellow coloration. When the gene C operates under dominant condition, it controls the accumulation of anthocyanins and the cyanic color of flowers, whereas under the influence of recessive alleles, white or yellow flowe]rs appear. Because the white and the yellow flowers accumulate dihydroflavonols, it is considered that the gene C expresses itself in the anthocyanin biosynthetic pathway after the appearance of dihydroflavonols while it remains to be determined whether the expression site is located before or after the flavan-3, 4-diol (1eucoanthocyanidin) step . To analyse the expression of the gene C, the flavonoids synthesized after dihydroflavonols in the biosynthetic pathway were investigated using the ray petals of four, Iines with white flowers and four lines with cyanic flowers (Table 1) in this study.
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Norio HOSOI
1992 Volume 42 Issue 3 Pages
615-630
Published: September 01, 1992
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The author reported in a previous paper(Hosol 1989a, b and 1990) that the degree of cool tolerance at the heading and flowering stages in a rice variety should be expressed by the levels of CLT and the duration of PFP. The levels of critical low temperature(CLT) can be determined by exposing the rice plants to constant low temperatures(17.5 to 22.5°C) at 1°C intervals with a low radiation intensity for 20 days from heading. The CLT for rice varieties is the lowest temperature, at which more than 80% of total spikelets repen under a low radiation intensity from heading. The duration of the period during which fertility is preserved(PFP) can be determined by exposing the rice plants to constant low temperatures at 15'C with a low radiation intensity for 2, 4, 6, 8, 10 and 12 days. The PFP is the lon-gest duration of the period during, which more than 80% of the total spikelets are able to ripen from heading at 15'C under low radiation intensity.
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Masahiko FURUSHO, Tomohiko YOSHIDA
1992 Volume 42 Issue 3 Pages
631-639
Published: September 01, 1992
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Barley (Hordeum vulgare L.) haploid can be obtained from interspecific hybridization between H. vulgare and H. bulbosum followed by the selective elimination of H. bulbosum chromosomes. The objective of this study was to evaluate the agronomic performance and malting quality of doubled haploid barley lines developed by the bulbosum method. F1 plants derived from two cross combinations of barley cultivars were crossed with a st.rain of H. bulbosum, and their haploid hybrids were treated by 0.05(colchicine solution to produce the doubled haploids. As the results, 209 doubled haploid plants were obtained from 2 F
1's (DH1, DH2) by the bulbosum method. Ranges for grain yield, 1000 grain weight and plump grain percentage of 143 Iines tested in 1988 were 22.8∼46.2 kg/a, 41.2∼50.6g, 65.0∼96.6% (DH1) and 25.6∼53.2kg/a 44.0∼54.8g, 75.5∼96.4% (DH2), respectively (Fig. 2), and 56 Iines were selected. Ranges for grain yield, 1000 grain weight, plump grain percentage and malting quality of the 56 Iines tested in 1989 were 35.2∼50..5kg/a, 44.0∼50.9g, 65.0∼95.7%, -14.2∼15.7 (DH1) and 39.6∼57.5kg/a, 43.9∼51.5 g, 70.8∼93.4%, -7.5∼13.3 (DH2), respectively (Fig. 3).
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Masao YOKOO, Fumio KIKUCHI
1992 Volume 42 Issue 3 Pages
641-648
Published: September 01, 1992
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Upland rice has been left without intensive studies on the inheritance of agronomic traits unlike lowland rice and there were very few reports on the genetic analysis of heading time. Since the Lm locus having multiple alleles controls primarily the varietal earliness and lateness of lowland rice (YOKOO et al. 1980), this report examined the role of the Lm locus in heading time of six native upland rice varieties. Under the natural day-1ength, the lowland rice tester lines ER with the early-heading gene Lm
e and LR with the late-heading allele Lm
u headed 84 a:nd 105 days after sowing, respectively. Four upland rice varieties. Kurumi-wase, Hideri-shirazu, Kyushu and Wase-dango-mochi, headed at almost the same time as ER. Kuroka-mochi headed intermediately between ER and LR, and Kirishima did two days later than LR.
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Kazuyoshi TAKEDA, Ryouichi KANATANI, Chen Lin ZHANG
1992 Volume 42 Issue 3 Pages
649-656
Published: September 01, 1992
Released on J-STAGE: April 18, 2008
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Resistance to scab in wheat was evaluated by the 'Cut-spike' inoculation method which had been developed earlier (TAKEDA and HETA 1989) to test for scab disease resistance in barley. Spikes at anthesis were removed from the wheat plants at the second internode, arranged in pans with overflowing water and then inoculated with the spore suspension. Spikes were maintained at 25'C and 100% humidity for two days, and then transfered to a growth camber controlled at 185'C (with a sine curve) and about 95% relative humidity. Illumination was about 10, 000 Iux during the 14 hour day. Eight days after inoculation, the percentage of infected spikelets was recorded. Three isolates of Fusarium graminearum Schwabe (No. 44, No. 78 and H 64) were inoculated onto 168 wheat cultivars, and for cornparison 282 barley cultivars were inoculated with isolate No. 78. Three spikes each of the cultivars were tested and the experiment was replicated twice. Because of the morphological differences between wheat and barley spikes, infected spikelet percentage was measured in wheat and infected floret percentage in barley. The data were subjected to statistical analysis after transforming the percentage of infected florets (spikelets) into the degree of angle.
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Takatoshi TANISAKA, Hiromo INOUE, Sakurako UOZ, Hirotada YAMAGATA
1992 Volume 42 Issue 3 Pages
657-668
Published: September 01, 1992
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Out of a large number of heading-time mutants artificially induced from a rice variety Gimb6zu, 83 mutants covering the heading dates from 3 weeks earlier to 2 weeks later than the original variety, were selected without a biased distribution of heading time. These mutants were grown together with the original variety and 32 important Japanese varieties in two kinds of artificially controlled environments, a high-temperature (30°C-short-day-length (10h) and a high-temperature (30°C)-long-day-length (14h): their basic vegetative growih (BVG), which was expressed by the days to heading under 30'C0h, and photoperiod sensitivity (PS), which was expressed by the difference between the days to heading under 30°C-14h and that under 30°C-10h, were estirnated. The estimated BVG and PS were then analyzed for their genetic variations and their relationships with the heading time under the natural conditions in a paddy field in Kyoto (N. L. 35°C01'). The extremely-early-heading varieties cultivated in Hokkaid6 showed small BVG and small PS, the early-heading varieties mainly cultivated in Tohoku and Hokuriku districts generally showed large BVG and small PS, and the intermediate- or late-heading varieties cultivated in the region from Kant6 to Kytish{i districts showed small BVG and large PS (Table 1, Fig. 2).
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Satomi YOSHIMURA, Atsushi YOSHIMURA, Nobuo IWATA
1992 Volume 42 Issue 3 Pages
669-674
Published: September 01, 1992
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Taiichi OGAWA, Takashi HAGIO, Yasunobu OHKAWA
1992 Volume 42 Issue 3 Pages
675-679
Published: September 01, 1992
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Toshiki NAKAMURA, Makoto YAMAMORI, Soh HIDAKA, Tuguo HOSHINO
1992 Volume 42 Issue 3 Pages
681-685
Published: September 01, 1992
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BOUBAKER Mohsen, YAHYAOUl Amor, Nobuyuki KURAUCHI, Toshiaki YAMADA
1992 Volume 42 Issue 3 Pages
687-695
Published: September 01, 1992
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Shigeru IMANISHI, Takeo TAKEDA, Kiyoshi SEKIMURA, Masao KAWAKATU
1992 Volume 42 Issue 3 Pages
697-705
Published: September 01, 1992
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Masumi KATSUTA, Kazutoshi OKUNO
1992 Volume 42 Issue 3 Pages
707-713
Published: September 01, 1992
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An IBPGR exploration for collecting cereal germplasm was carried out over a wide area of Pakistan in 1989. The result suggested that a large number of local varieties are grown in northern Pakistan. In 1991, we focused our survey on rice germplasm in northern Pakistan. T. he present status of rice growing and information on local varieties in the north-ern mountainous area are as follows; 1) In the Chitral District, rice plants are cultivated in terraced fields located at elevations ranging from 1, 000m to 2, 250m. Two kinds of varieties, Nali (transplanting) and Byene or Beyan (direct sowing), are adapted to these areas. These varieties are similar to the Japonica type varieties . They differed in the phenol reaction of the hull, , There were some differences in the color of the apiculus, awn and hull of Nali among the locations. Due to the higher productivity, the farmers prefer to cultivate Nali, although the grain quality of Byene is superior to that of Nali.
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