• 제목/요약/키워드: forestry and fisheries

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Development of the pyramiding lines with strong culm genes derived from crosses among the SCM near isogenic lines in rice

  • Ookawa, Taiichiro;Kamahora, Eri;Ebitani, Takeshi;Yamaguchi, Takuya;Murata, Kazumasa;Iyama, Yukihide;Ozaki, Hidenobu;Adachi, Shunsuke;Hirasawa, Tadashi;Kanekatsu, Motoki
    • 한국작물학회:학술대회논문집
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    • 한국작물학회 2017년도 9th Asian Crop Science Association conference
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    • pp.21-21
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    • 2017

  • Severe lodging has recurrently occurred at strong typhoon's hitting in recent climate change. The identification of quantitative trait loci (QTLs) and their responsible genes associated with a strong culm and their pyramiding are important for developing high-yielding varieties with a superior lodging resistance. To identify QTLs for lodging resistance, the tropical japonica line, Chugoku 117 and the improved indica variety, Habataki were selected as the donor parent, as these had thick and strong culms compared with the temperate japonica varieties in Japan such as Koshihikari. By using chromosome segment substitution lines (CSSLs) in which chromosome segments from the japonica variety were replaced to them from Habataki, we identified the QTLs for strong culm on chrs. 1 and 6, which were designated as STRONG CULM1 (SCM1) and STRONG CULM2 (SCM2), respectively. By using recombinant inbred lines (BILs) derived from a cross between Chugoku 117 and Koshihikari and introgression lines, we also identified the other QTLs for strong culm on chrs. 3 and 2, which were designated as STRONG CULM3 (SCM3) and STRONG CULM4 (SCM4), respectively. Candidate region of SCM1 includes Gn1 related to grain number. SCM2 was identical to APO1, a gene related to the control of panicle branch number, and SCM3 was identical to FC1, a strigolactone signaling associated gene, by performing fine mapping and positional cloning of these genes. To evaluate the effects of SCM1~SCM4 on lodging resistance, the Koshihiakri near isogenic line (NIL) with the introgressed SCM1 or SCM2 locus of Habataki (NIL-SCM1, NIL-SCM2) and the another Koshihikari NIL with the introgeressed SCM3 or SCM4 locus of Chugoku 117 (NIL-SCM3, NIL-SCM4) were developed. Then, we developed the pyramiding lines with double or triple combinations derived from step-by-step crosses among NIL-SCM1 NIL-SCM4. Triple pyramiding lines (NIL-SCM1+2+3, ~ NIL-SCM1+3+4) showed the largest culm diameter and the highest culm strength among the combinations and increased spikelet number due to the pleiotropic effects of these genes. Pyramiding of strong culm genes resulted in much increased culm thickness, culm strength and spikelet number due to their additive effect. SCM1 mainly contributed to enhance their pyramiding effect. These results in this study suggest the importance of identifying the combinations of superior alleles of strong culm genes among natural variation and pyramiding these genes for improving high-yielding varieties with a superior lodging resistance.

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농림수산식품분야 정보처리를 위한 적응하는 분기히스토리 길이를 갖는 분기예측 메커니즘 (A Branch Prediction Mechanism With Adaptive Branch History Length for FAFF Information Processing)

  • 고광현;조영일
    • 현장농수산연구지
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    • 제13권1호
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    • pp.3-17
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    • 2011

  • Pipelines of processor have been growing deeper and issue widths wider over the years. If this trend continues, branch misprediction penalty will become very high. Branch misprediction is the single most significant performance limiter for improving processor performance using deeper pipelining. Therefore, more accurate branch predictor becomes an essential part of modem processors for FAFF(Food, Agriculture, Forestry, Fisheries)Information Processing. In this paper, we propose a branch prediction mechanism, using variable length history, which predicts using a bank having higher prediction accuracy among predictions from five banks. Bank 0 is a bimodal predictor which is indexed with the 12 least significant bits of the branch PC. Banks 1,2,3 and 4 are predictors which are indexed with different global history bits and the branch PC. In simulation results, the proposed mechanism outperforms gshare predictors using fixed history length of 12 and 13, up to 6.34% in prediction accuracy. Furthermore, the proposed mechanism outperforms gshare predictors using best history lengths for benchmarks, up to 2.3% in prediction accuracy.

  • https://doi.org/10.23097/JPAF:2011.13(1).3 인용 PDF

ICT 기반의 인삼 공정 육묘 시 양액비율이 생장에 미치는 영향 (Effect of Nutrient Solution Ratio on Growth in ICT-Based Ginseng Process Ginseng Plant)

  • 김동현;김연복;구현정;백현진 ;이수빈;홍의기;김상기;장광진
    • 현장농수산연구지
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    • 제24권4호
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    • pp.5-10
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    • 2022

  • 인삼 종자를 사토 토양에 파종 후 평균발아율은 양액농도 EC1.0에서 87%로 가장 높게 나왔다. 다음으로 EC1.5에서는 82%, EC2.0에서는 78%, EC2.5에서는 72%, EC0.5에서는 71%, 비교군(EC0.0)에서는 68% 순이다. 우수 발아율 순서는 EC 1.0, 1.5, 2.0, 2.5, 0.5 비교군 0.0으로 발아율이 확인되었다. 인삼 종자파종 60일 후 식물체를 인삼토양에 이식하였다. 30일 후 각 양액 EC(0.0에서~2.5까지) 각 6개 실험구 별로 생육비교 관찰한 결과 EC1.5에서는 3.90cm로 가장 많은 초장(cm)이 생장을 하였다. EC1.0에서는 0.33g으로 가장 많은 초중(g)의 증가를 하였고, EC0.5에서는 1.46mm으로 가장 많은 초경(mm)의 증가를 하였다. 인삼 이식 생장을 조사한 결과 다른 실험구보다 초장(cm)에서는 EC1.5에서, 초중(g)은 EC1.0에서, 초경(mm)은 EC0.5 양액 농도가 생장이 우수한 결과로 측정되었다. 적절한 양액 농도는 EC0.5~EC1.5까지 생육 증가의 결과값으로 확인되었다.

  • https://doi.org/10.23097/JPAF:2022.24(4).5 인용 PDF KSCI

Forestry Education Support by a Forest Research Institute: Development of Forestry Educational Programs for Vocational High Schools

  • Inoue, Mariko;Oishi, Yasuhiko;Fujii, Tomoyuki;Kobayashi, Hiroyuki
    • Journal of Forest and Environmental Science
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    • 제24권3호
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    • pp.175-179
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    • 2008

  • Forestry education in vocational high schools is one of the fundamental keys for achieving sustainable forest management. However, support systems for forestry education have not been well developed in Japan. Forest research institutes, which have accumulated relevant information, should have sufficient ability to develop new educational programs in this field. This study examined the possibility of support systems for forestry technical education by a research institute. Educational programs for vocational high schools were developed, and the programs were examined for their practical applications through a workshop for these teachers. We set the following five requirements for the programs: They should 1) incorporate new contents related to sustainable forest management, 2) be based on forestry education textbooks, 3) meet recent demands of the schools and society, 4) allow participants to learn through actual practice and experience, and 5) utilize readily available teaching materials. With these criteria, we developed the following two educational programs: (a) Forest management program to teach advanced techniques, (b) A timber-program to teach about biomass resources. The workshop was held on July $28^{th}$, 2007 with ten teachers attending. The programs were very interesting, who gave them high average evaluation of 4.6 on a scale of 1 to 5. Only a few issues need to be resolved before classroom instruction can begin, such as making wood structure easier to understanding for some teachers, and obtaining base maps of school forests. In conclusion, forest research institutes can effectively support forestry education by providing and implementing programs based on scientific information.

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