高温がダイズの開花・結莢におよぼす影響

Plants of soybean(cv.Enrei) were grown in pots(1/5000a) in a viny house. Temperature treatment was conducter for 10 days from the beginning of the flowering period(BFP) in the growth chambers under artificial light controlled at day/night air temperatures of 27/27, 32/27, and 37/27℃, respectively. the pollen viability at 37/27℃(89.4%) was significantly lower than 27/27℃(97.2%). In ouder to identify the sensitive stage to high temperature, the plants were treated for 2 days before BFP in the growth chambers controlled at 27/27 and 40/27 ℃, respectively, and the pollen viability of flowers opening after the treatment was investigates. By the treatment at 40/27℃, the pollen viability of flowers which opened at 4 days after the treatment(82.9%) was significantly lower than 27/27℃(97.3%). This indicates that floral buds at 4 to 5 days before flowering, which coincide with the microsporogenesis stage, are sensitive to high temperature. However, high temperature affected the pod setting ratio a little in both experiments. High temperature treatment was conducted by transferring the plants into the glasshouse under natural light before and after BFP. High temperature treatment at 7-1 days before BFP promoted vegetative growth and increased the pod setting ratio, while reducing the seed size. High temperature treatment at 14-8 days before BFP promoted floral differentiation on the second order racemes with compound leaves and increased the number of the floral buds, so that reduced the pod setting ratio. These results suggest that hight temperature at the microsporogenesis stage reduces pollen viabillity, however, pod setting ratio is affecter by the pollen viabillity.ダイズ品種エンレイを供試し，雨除けハウス内でポット栽培を行った．開花始から10日間，昼/夜温を27/27，32/27，37/27℃に設定した人工光型グロスチャンバー内でダイズを育成し，処理９日目に開花前日の花蕾について花粉稔性を調査した．花粉稔性は27/27℃処理（97.2）に比べて37/27℃処理（89.4）で有意に低下した．高温に敏感な時期を特定するため，開花始前に２日間，昼/夜温を27/27，40/27℃に設定した人工光型グロスチャンバー内でダイズを育成し，処理後開花した花について花粉稔性を調査した．その結果，処理後４日に開花した花の花粉稔性が27/27℃処理（97.3）に比べて40/27℃処理（82.9）で有意に低下した．すなわち開花前４，５日が高温に特に敏感な時期であることが示され，この時期は雄性生殖細胞分裂期に一致した．しかし，両実験とも結莢率におよぼす高温の影響は小さかった．さらに，自然光下のガラス温室内で開花始前後の４週間について１週間ごとに高温処理を行い，収量成立過程におよぼす影響について検討した．開花始前７～１日の高温処理は栄養成長を促進し結莢率を高めたものの，百粒重を減少させたため，子実収量は対照区とほぼ同様となった．開花始前14～８日の高温処理は２次椏枝の花芽分化を促進しその花蕾数を著しく増加させた結果，結莢率が著しく低下した．以上の結果より，雄性生殖細胞分裂期の高温は花粉稔性を低下させるが，結莢率は花粉稔性よりも花蕾数や開花期の栄養条件によって大きく影響されることが示唆された

トマト ノ ダブル カボウ ノ ケイセイ ニ オヨボス サイバイ ジョウケン ト ショクブツ セイチョウ チョウセイ ブッシツ ノ エイキョウ

【緒言】トマトに通常みられるシングル花房は単出集散花序の中のさそり形花序で，ダフ、ル花房は単出集散花序がいくつか複合したものあるいは二出集散花序の一変形であるとみられる.また，花序の中の個々の花の基部には小包葉と思われる器官が一対認められ，その葉腋に腋芽が認められる.したがってダブル花房は一対の小包葉に対応して二つの腋芽が発生し，シングル花房は二つの小包葉のうち片方の腋芽が発達して形成されることとなる.仮軸分枝を基本とする集散花序の中では個々の花の形成も一次ごとに分枝次数が高まるので小包葉の発達の仕方も葉序の左右性に従った左右交互性が認められている.本研究ではこのような可能性を持っているトマトについてどのような栽培条件，植物生長調整物質処理でダブル花房の形成が促進されるかについて調べようとした

Lingnan Gardeners Bimonthly Newsletter (No. 47) = 嶺南彩園通訊 (第47期)

Balsamines 鳳仙花https://commons.ln.edu.hk/ln_gardeners_newsletter/1047/thumbnail.jp

アントシアニジン合成系遺伝子DFRの系統解析

Plants have various color pigments. Many plants have fruits and flowers of vivid colors such as orange, red, purple and blue. Anthocyanins with anthocyanidins as aglycone are one group of plant pigments. Each type of anthocyanidins is determined by the substrate specificity of dihydroflavonol 4-reductase (DFR) in its biosynthetic pathway and has a major influence on the determination of plant color. We performed a phylogenetic analysis of DFR genes, which are key enzymes of this anthocyanidin biosynthesis pathway. We collected 170 DFR clones in various plants by browsing database (NCBI). The collected DFRs were classified into ten groups according tosequence similarity. The consensus sequences within each group were aligned, and amino acids involved in the responsible region for determination of the substrate specificity of DFR have been shown. In addition, DFR's intron sites were highly conserved. These results would be useful to unveil the relationship between DFR and plant pigments

三种湿地植物抗寒性的初步研究

在阶段性降温条件下,研究了三种常用湿地植物黄鸢尾(Iris pseudacorus L.)、花菖蒲(Iris ensata Thunb.)及水芹(Oenabthe javanica)叶片抗寒性相关生理指标(可溶性蛋白质含量、可溶性糖含量、游离脯氨酸含量、丙二醛含量、超氧化物歧化酶活性、过氧化物酶活性、过氧化氢酶活性以及细胞质膜相对透性)的变化。结果表明,冷锻炼使湿地植物通过对抗氧化酶活性及渗透性的调节来提高其机体的抗寒性。低温条件下,黄鸢尾的抗氧化酶活性显著增加,5℃时SOD活性是初始值的5.77倍;花菖蒲保持较高的CAT活性,5℃时其CAT活性是黄鸢尾CAT活性的8.95倍,是水芹CAT活性的3.77倍;水芹叶片中脯氨酸含量明显提高,温度和脯氨酸含量呈负相关(R=-0.755,P=0.050)。综合比较各项生理指标可以得到这三种湿地植物的耐寒性大小顺序依次为:黄鸢尾>花菖蒲>水芹

A Preliminary Study on Sensory-Processing Sensitivity and Word Association

Sensory-processing sensitivity is a personality trait of processing information (e.g. auditory, visual, tactile, olfactory) more strongly and deeply than others. Previous research has found individuals with high sensory-processing sensitivity (highly sensitive person: HSP) have a personality with intuitive dominant function categorized by Carl Jung. The present study investigated the hypothesis if the highly sensitive persons have a tendency to imagine intuitive words on word association test. University students (N = 15) were asked to take part in the Watchword technique (Daniels, 1992). After that, they completed the Highly Sensitive Person Scale-Short form and Nine-item Empath Scale. Results showed that there was no difference between high and low HSP groups in the number of intuitive words, but individuals with high sensory-processing sensitivity felt right about interpretations of watchword keys. Further research is needed to confirm and expand these findings.感覚処理感受性は聴覚・視覚・触覚・嗅覚などの情報を強く深く処理する人格特性である。これまでの研究によると，感覚処理感受性の高い人（高敏感者）は，カール・ユングの性格論でいう直感が主機能だといわれる。そこで本研究では，感覚処理感受性の高い人は，言語連想検査において直感的なワードを想像しやすいかどうかを検討した。大学生の参加者 (N = 15) がウォッチワード・テクニック (Daniels, 1992) を体験したのち，高敏感者尺度とエンパス尺度を評定した。その結果，直感ワードの頻度は，高敏感者尺度の高低群で違いはなかったが，高敏感者尺度やエンパス尺度が高いほど，ウォッチワード・キーの解釈をぴったりくると感じていた。これらの結果を考察するためには，さらなる研究が必要である

Integrated learning programme 2016-2017 : term 2

This Integrated Learning Programme (ILP) guidebook provides details about ILP courses offered during 2016-2017 second term in Lingnan University, Hong Kong.https://commons.ln.edu.hk/ilp_guidebook/1028/thumbnail.jp

Thermal Effect Mechanism and Surface Topography of the Micro-EDM Workpiece

微细电火花加工具有可以非接触加工、三维加工能力以及设备简单、可实施性强、加工性能与材料硬度强度无关等优点。这种方法能加工处理的材料非常广泛，不仅可以加工各种性能优良的金属、合金，还可以加工陶瓷、硅等半导体材料。因此，微细电火花加工在复杂微小零件的制作中有着独特的优越性，也得到了广泛的应用。目前，微细电火花加工的理论研究和工艺研究还存在很多问题，尤其在蚀除过程中，现在普遍采用普通电火花的加工机理来说明。微细电火花加工具有放电时间短、放电通道半径小及能量密度高等特点，所以其放电过程与普通电火花明显不同。因此，本文按照微细电火花加工蚀除过程和表面成形的先后顺序，对微细电火花窄脉宽放电加工的热源模型、...Micro-EDM(Electric Discharge Machining) has brilliant advantags in non-contact processing, 3-D machining ability as well as the equipment is simple, practical strong, processing performance has nothing to do with the material hardness, strength, etc. This method has a very wide range of materials’ processing ability, not only can process various metals and alloys with excellent properties, but als...学位：工学博士院系专业：物理与机电工程学院_机械电子工程学号：1992011015403

室内植物表型平台及性状鉴定研究进展和展望

Plant phenomics is under rapid development in recent years, a research field that is progressing towards integration, scalability, multi-perceptivity and high-throughput analysis. Through combining remote sensing, Internet of Things (IoT), robotics, computer vision, and artificial intelligence techniques such as machine learning and deep learning, relevant research methodologies, biological applications and theoretical foundation of this research domain have been advancing speedily in recent years. This article first introduces the current trends of plant phenomics and its related progress in China and worldwide. Then, it focuses on discussing the characteristics of indoor phenotyping and phenotypic traits that are suitable for indoor experiments, including yield, quality, and stress related traits such as drought, cold and heat resistance, salt stress, heavy metals, and pests. By connecting key phenotypic traits with important biological questions in yield production, crop quality and Stress-related tolerance, we associated indoor phenotyping hardware with relevant biological applications and their plant model systems, for which a range of indoor phenotyping devices and platforms are listed and categorised according to their throughput, sensor integration, platform size, and applications. Additionally, this article introduces existing data management solutions and analysis software packages that are representative for phenotypic analysis. For example, ISA-Tab and MIAPPE ontology standards for capturing metadata in plant phenotyping experiments, PHIS and CropSight for managing complicated datasets, and Python or MATLAB programming languages for automated image analysis based on libraries such as OpenCV, Scikit-Image, MATLAB Image Processing Toolbox. Finally, due to the importance of extracting meaningful information from big phenotyping datasets, this article pays extra attention to the future development of plant phenomics in China, with suggestions and recommendations for the integration of multi-scale phenotyping data to increase confidence in research outcomes, the cultivation of cross-disciplinary researchers to lead the next-generation plant research, as well as the collaboration between academia and industry to enable world-leading research activities in the near future

The relationship between the Dark Triad traits and help-seeking attitude in high school students

Participants in previous studies on the Dark Triad of personality (Machiavellianism, Psychopathy, and Narcissism) have been mainly college students or older. In the present study, participants were 799 high school students, and the purpose was to identify the factor structure of the Dark Triad and examine differences according to sex, school year, and career direction. Additionally, we investigated the relationship between the Dark Triad and help-seeking attitudes. The results were in line with previous evidence, as the hierarchical factor structure of the Dark Triad was identified. Furthermore, negative influences of Machiavellianism and Psychopathy on help-seeking attitudes were found. On the other hand, there was a positive influence of Narcissism on help-seeking attitudes.Dark Triadとは，マキャベリアニズム，サイコパシー，自己愛傾向の3つの総称である。これまでのDark Triadに関する研究は，大学生以上を対象とした研究が主流である。本研究では，799名の高校生を対象に調査を実施し，Dark Triadの因子構造を確認するとともに，性別，学年，進路による差についても検討し，大学生以上を対象に行われた従来の研究の知見との比較を行うことを目的とした。また，合わせて援助要請との関連についても検討した。その結果，Dark Triadにおいては階層的な因子構造が高校生サンプルにおいても確認された。また，マキャベリアニズム，サイコパシーは援助要請に対してネガティブな関連がみられるのに対して，ナルシシズムはポジティブな関連がみられた