Shokubutsu Kankyo Kogaku最新文献_第7页

Plant growth under hypobaric conditions 植物在低压条件下的生长

Shokubutsu Kankyo Kogaku Pub Date : 2008-12-01 DOI: 10.2525/SHITA.20.228

Y. Ishigami, E. Goto

{"title":"Plant growth under hypobaric conditions","authors":"Y. Ishigami, E. Goto","doi":"10.2525/SHITA.20.228","DOIUrl":"https://doi.org/10.2525/SHITA.20.228","url":null,"abstract":"In order to achieve plant production in a closed ecological life support system (CELSS) in space, environmental control is a key technology because the environment is completely artificial. One advantage of the CELSS in space is that each module's gas composition and total pressure can be regulated at an optimal level. For example, the nitrogen contained in air is not necessary for plant growth, and low oxygen concentration may enhance net photosynthesis by reducing photorespiration. Hypobaric conditions, obtained by reducing nitrogen and oxygen concentrations, could facilitate gas control, reduce construction costs, and simplify maintenance of modules on a lunar base and in plant production systems on Mars. This review summarizes previous papers and evaluates significant effects of total pressure on growth and development of higher plants, especially crops. Previous studies showed that photosynthesis and transpiration of plants were enhanced under low total pressures because gas diffusion rates increase at low total pressures. Spinach and lettuce in vegetative stages can grow normally under 25 to 50 kPa total pressures. Seeds of rice and Arabidopsis thaliana germinated at 25 kPa total pressure. Flowering was normal in Arabidopsis under hypobaric conditions. Seed growth of soybean and Arabidopsis under low total pressures with a low O2 partial pressure was greater than under the atmospheric pressure with the same O2 partial pressure. This indicates that O2 concentrations inside siliques were maintained higher by the higher diffusion rates prevailing under hypobaric conditions. The results indicate that if total and partial pressures are controlled precisely, plants can grow normally in their life cycle from germination to harvest under hypobaric conditions.","PeriodicalId":315038,"journal":{"name":"Shokubutsu Kankyo Kogaku","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131208836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Synchronization of Asparagus Somatic Embryos and Evaluation of Their Stability During Long-term Passage 芦笋体细胞胚胎的同步及其长期传代稳定性评价

Shokubutsu Kankyo Kogaku Pub Date : 2008-09-01 DOI: 10.2525/SHITA.20.176

Yoshihiro Ojima, Y. Iwamoto, M. Nishioka, Kino-oka Masahiro, T. Kanaya, M. Asada, M. Taya

{"title":"Synchronization of Asparagus Somatic Embryos and Evaluation of Their Stability During Long-term Passage","authors":"Yoshihiro Ojima, Y. Iwamoto, M. Nishioka, Kino-oka Masahiro, T. Kanaya, M. Asada, M. Taya","doi":"10.2525/SHITA.20.176","DOIUrl":"https://doi.org/10.2525/SHITA.20.176","url":null,"abstract":"植物不定胚の同調化は，その後の植物体への安定な再生を実現する上で重要である．本研究においては，アスパラガス(A. officinalis L.) ‘ウェルカム’ から誘導された不定胚の同調化手法の確立ならびに長期継代培養中における不定胚の形態および遺伝的安定性の評価を行った．不定胚の誘導については，ECの初期PCVに依存して，得られる不定胚のPCVが変化することがわかった．ECの初期PCVが1.0×10-2ml/100 ml-mediumのとき，誘導後42日後の不定胚PCVが43 ml/100 ml-mediumと最大に達した．このとき得られた不定胚をメッシュで分級したところ，心臓胚から魚雷胚へ移行する不定胚を多く含む画分が60.6％となり，不定胚誘導に適した条件であることがわかった．さらに，継代培養中の不定胚の投影面積ならびに円形度は，不定胚の生長過程を評価するパラメータとなりうることがわかった．誘導42日後の不定胚を用い，メッシュを組み合わせた分級収集を行ったところ，約90％の不定胚が平均投影面積1.0-4.0 mm2，円形度1.2-1.6の領域に含まれ，不定胚が同調化されていることが示された．しかし，さらに長期継代培養を続行したところ，誘導70日後において不健全な形態を示す不定胚の存在が認められた．誘導後42日後と70日後の不定胚から再生された植物体を対象にRAPD-PCR法により遺伝子解析を行ったところ，長期継代を経た一部の不定胚は遺伝子レベルで変質している可能性が示唆された．","PeriodicalId":315038,"journal":{"name":"Shokubutsu Kankyo Kogaku","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134603632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Cultivar, Decapitation and Training Direction on the Uniformity and Number of Lateral Shoots in the Vegetative Propagation of Tomato Plants 品种、扦插和培养方向对番茄无性繁殖中侧芽均匀性和数量的影响

Shokubutsu Kankyo Kogaku Pub Date : 2008-09-01 DOI: 10.2525/SHITA.20.152

M. Oda, Mey Huang, H. Ikeda, H. Furukawa

引用次数: 4

カイワレ栽培における成長とカチオン(Ca+2、Mg+2、K+)含有量に及ぼす磁場と音波の効果磁场和声波对驯化过程中的生长和阳离子(Ca+2, Mg+2, K+)含量的影响

Shokubutsu Kankyo Kogaku Pub Date : 2008-06-01 DOI: 10.2525/SHITA.20.106

昌男山名, 崇好原島, 剛史山口, 昭栗山

引用次数: 0

パクロブトラゾールおよびエセフォンがサルビア・コッキネア(Salvia coccinea Juss.Ex Murray)の草丈および花数に及ぼす影響帕克布特拉唑和埃塞丰对莎草花(Salvia coccinea jus . ex Murray)的草长和花数的影响

Shokubutsu Kankyo Kogaku Pub Date : 2008-06-01 DOI: 10.2525/SHITA.20.102

太田勝巳, 劉興遠, 宗藤慎一, 細木高志

{"title":"パクロブトラゾールおよびエセフォンがサルビア・コッキネア(Salvia coccinea Juss.Ex Murray)の草丈および花数に及ぼす影響","authors":"太田勝巳, 劉興遠, 宗藤慎一, 細木高志","doi":"10.2525/SHITA.20.102","DOIUrl":"https://doi.org/10.2525/SHITA.20.102","url":null,"abstract":"パクロブトラゾールおよびエセフォンによるサルビア・コッキネア ‘コーラルニンフ’ の草丈および開花に及ぼす影響を評価するために発蕾直前に散布処理した．薬剤散布3週間後に，パクロブトラゾールおよびエセフォンの処理によって，茎長はパクロブトラゾール区およびエセフォン区において対照区に比べて小さくなる傾向にあった．同様に，第7葉における葉長および葉色はそれぞれ最も大きくなった．また，葉幅はパクロブトラゾール区では，対照区に比べて大きくなった．パクロブトラゾールおよびエセフォンの処理により，1番花開花日は，遅延し，花穂長も抑制された．主枝の花数および花数/花穂長は500 mg l -1および1000 mg l -1エセフォン区で最も多くなった．以上の結果より，発蕾直前に茎葉散布した500 mg l -1および1000 mg l -1エセフォン区において，サルビアの茎長の抑制および花数増加が可能であった．","PeriodicalId":315038,"journal":{"name":"Shokubutsu Kankyo Kogaku","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117120216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improvement of edible quality and augmentation of the tasty constituent (umami) of harvested dehusked sweet corn by low intensity LED light irradiation at low temperature 低温低强度LED光照射改善脱壳甜玉米食用品质及增味研究

Shokubutsu Kankyo Kogaku Pub Date : 2008-03-01 DOI: 10.2525/SHITA.20.31

H. Ohta, M. Ohta, Tetsuya Suzuki

{"title":"Improvement of edible quality and augmentation of the tasty constituent (umami) of harvested dehusked sweet corn by low intensity LED light irradiation at low temperature","authors":"H. Ohta, M. Ohta, Tetsuya Suzuki","doi":"10.2525/SHITA.20.31","DOIUrl":"https://doi.org/10.2525/SHITA.20.31","url":null,"abstract":"The present study was undertaken to develop an effective preservation system for sweet corn kernels by taking advantage of the properties of dim LED light and cool temperature. Dehusked sweet corns (Zea mays L. var. saccharata f. Peter corn) were stored at 5°C for 4 d under a photosynthetic photon flux density (PPFD) of 1μmol m-2 s-1 using red and blue LEDs. During storage, the Brix scale was measured daily, and an amino acid analysis was carried out after 4 d storage. The Brix scales were kept high under the blue LED irradiation and cool conditions (5°C) compared to those under dark-cool conditions.Similarly, sweet corn umami was enhanced by storage under the blue LED-cool conditions, which was in good agreement with the observed increase of aspartic acid and glutamic acid, a predominant amino acid, under the same conditions. Red LED-cool conditions had also a preserving effect on sweet corn kernels but not as pronounced as the blue LED-cool conditions. However it was much better than that of dark-room temperature conditions. These results suggest that light quality during storage determines the quality of sweet corn kernel and its umami constituents. The authors propose the blue LED-cool preservation as a practical and useful technique.","PeriodicalId":315038,"journal":{"name":"Shokubutsu Kankyo Kogaku","volume":"49 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132278557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Reasons for inefficacy of DIF on French marigold (Tagetes patula, 'Bonanza Yellow')-Analysis of hypocotyls elongation in the light and dark periods- DIF对法国万寿菊(Tagetes patula， 'Bonanza Yellow')无效的原因-光照期和黑暗期下胚轴伸长分析

Shokubutsu Kankyo Kogaku Pub Date : 2008-03-01 DOI: 10.2525/shita.20.26

H. Shimizu, Yukari Tsushima, Kana Komatsu

引用次数: 0

DIF環境下におけるノースポール (Chrysanthemum paludosum 'North Pole') 下胚軸の伸長成長解析 DIF环境下北极(Chrysanthemum paludosum 'North Pole')下胚轴伸展生长分析

Shokubutsu Kankyo Kogaku Pub Date : 2008-03-01 DOI: 10.2525/SHITA.20.2

浩二清水, 對馬ゆかり, 菜子小松佳

{"title":"DIF環境下におけるノースポール (Chrysanthemum paludosum 'North Pole') 下胚軸の伸長成長解析","authors":"浩二清水, 對馬ゆかり, 菜子小松佳","doi":"10.2525/SHITA.20.2","DOIUrl":"https://doi.org/10.2525/SHITA.20.2","url":null,"abstract":"ノースポール(Chrysanthemum paludosum ‘North Pole’)を対象として,3通りの昼夜間温度差(DIF)条件, +10 DIF(明期25°C/暗期15°C), 0 DIF(20°C/20°C), -10 DIF (15°C/25°C)で下胚軸の伸長成長量を画像計測システムを用いて10分毎に6日間連続計測した. その結果, 計測開始2日目(播種10日後)の一日の伸長成長量は+10 DIF で0.5 mm, 0 DIFで0.42 mm,-10 DIFで0.2mmとなり, DIF値が大きいほど一日の伸長成長量が大きくなった.明期および暗期における伸長成長量は, 明期にDIF値が大きくなると伸長成長量も大きくなる傾向が認められるが, 一方, 暗期ではDIF値による伸長成長量の違いは認められなかった. これらの伸長プロフィールを画像による連続計測データから解析したところ, 伸長成長パターンについては+10 DIFと0 DIFの伸長成長パターンはよく似ており, ぞれぞれ明期開始3時間後, 5時間後に顕著な伸長が認められれるが, -10 DIFでは明期暗期ともに顕著な伸長成長は認められず, 明期開始8時間後(14時頃)に若干の増加傾向が観察された程度であった. また, 顕著な伸長成長の持続時間もDIF値が大きいほど長いことが明らかとなり, 明期の伸長成長量がDIF環境下におけるノースポールの一日の伸長成長量に大きな影響を与えていることが明らかとなった.","PeriodicalId":315038,"journal":{"name":"Shokubutsu Kankyo Kogaku","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115860769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

ハボタン(Brassica oleracea var. acephala.‘Tsugumi’)下胚軸のDIF環境下における伸長成長解析叶片(Brassica oleracea var. acephala.“Tsugumi”)下胚轴在DIF环境下的伸展生长分析

Shokubutsu Kankyo Kogaku Pub Date : 2008-03-01 DOI: 10.2525/SHITA.20.21

清水浩, 對馬ゆかり, 小松佳菜子

引用次数: 1

サツマイモ品種‘すいおう’の茎葉生産に適する養液栽培方式适合红薯品种“水王”茎叶生产的养液栽培方式

Shokubutsu Kankyo Kogaku Pub Date : 2007-12-01 DOI: 10.2525/SHITA.19.167

壽彦江口, 修治森山, 郁夫宮島, 敏之吉田, 二郎筑紫

引用次数: 3