abstract：:Sex allocation of a cosexual wind-pollinated species, Quercus dentata (Fagaceae), was analyzed using biomass, carbon, nitrogen and phosphorus as currencies based on data accumulated for 61 individuals from 1997-2004. Strongly female-biased sex allocation was indicated when measured in terms of biomass and carbon, but ...

journal_title：Journal of plant research

authors： Ishida TA,Hattori K,Shibata S,Suzuki M,Kimura MT

更新日期：2005-06-01 00:00:00

abstract：:This is the first report on gamma-tubulin and microtubule arrays during microsporogenesis in a gymnosperm. Meiosis in Ginkgo biloba is polyplastidic, as is typical of the spermatophyte clade, and microtubule arrays are organized at various sites during meiosis and cytokinesis. In early prophase, a cluster of gamma-tub...

journal_title：Journal of plant research

authors： Brown RC,Lemmon BE

更新日期：2005-04-01 00:00:00

abstract：:Cyrtomium is an Asiatic genus characterized by anastomosing veins with included veinlets, and comprises about 40 species. We sequenced rbcL and trnL-F sequences of 19 species of Cyrtomium and eight species from related genera in order to elucidate a molecular phylogeny of the genus using maximum-parsimony methods. The...

journal_title：Journal of plant research

authors： Lu JM,Li DZ,Gao LM,Cheng X,Wu D

更新日期：2005-04-01 00:00:00

abstract：:The PEND protein is a DNA-binding protein in the inner envelope membrane of the developing chloroplast. It consists of a short pre-sequence, an N-terminal DNA-binding domain (cbZIP), a central repeat domain, and a C-terminal transmembrane domain. PEND homologs have been detected in various angiosperms, including Arabi...

journal_title：Journal of plant research

authors： Terasawa K,Sato N

更新日期：2005-04-01 00:00:00

abstract：:The orientation of cortical microtubules (cMT) during gravitropism was studied in epidermal cells of azuki epicotyls. The relative proportion of cells with longitudinal cMT increased in the upper epidermis, and those with transverse cMT increased in the lower epidermis. When epicotyls were kept straight during gravist...

journal_title：Journal of plant research

authors： Ikushima T,Shimmen T

更新日期：2005-02-01 00:00:00

abstract：:The pollen morphology of 11 genera and 11 species of the Hydrocharitaceae and one species of the Najadaceae was studied using scanning and transmission electron microscopies, and the exine structures and sculptures are discussed in relation to pollination mechanisms and the molecular phylogeny. The pollen grains of th...

journal_title：Journal of plant research

authors： Tanaka N,Uehara K,Murata J

更新日期：2004-08-01 00:00:00

abstract：:The contribution of xanthine dehydrogenase (XDH, EC 1.1.1.204) to fruit size was investigated using the normal and small-fruit variants of Persea americana Mill. cv. 'Hass'. Inhibition of XDH by treatment of normal fruit, in the linear phase of growth (phase II), with allopurinol (Allo) arrested fruit growth. Adenine ...

journal_title：Journal of plant research

authors： Taylor NJ,Cowan AK

更新日期：2004-04-01 00:00:00

abstract：:Petal flavonoid compositions of 39 tree peony cultivars from Xibei (northwest China) were investigated in order to study the chemotaxonomic relationship among tree peony species. Six anthocyanins, the 3- O-glucosides and 3,5-di- O-glucosides of three anthocyanidins-pelargonidin (Pg), cyanidin (Cy), and peonidin (Pn)-e...

journal_title：Journal of plant research

authors： Wang LS,Hashimoto F,Shiraishi A,Aoki N,Li JJ,Sakata Y

更新日期：2004-02-01 00:00:00

abstract：:Plant clonality may greatly reduce effective population size and influence management strategies of rare and endangered species. We examined genetic diversity and the extent of clonality in four populations of the monotypic herbaceous perennial Japonolirion osense, which is one of the most rare flowering plants in Jap...

journal_title：Journal of plant research

authors： Tomimatsu H,Hoya A,Takahashi H,Ohara M

更新日期：2004-02-01 00:00:00

abstract：:In phylogenetic trees generated from partial trnL(UAA) intron sequences, the hornworts (represented by nine species from the genera Anthoceros, Dendroceros, Megaceros, Notothylas and Phaeoceros) are resolved as a monophyletic group and are separated from the clades of mosses, liverworts and tracheophytes. A secondary ...

journal_title：Journal of plant research

authors： Stech M,Quandt D,Frey W

更新日期：2003-10-01 00:00:00

abstract：:Morphological and molecular variation in Mitchella undulata Siebold et Zucc. was examined to evaluate the genetic basis for recognizing the dwarf variety, M. undulata var. minor Masamune. Considerable variation in leaf size in M. undulata, but no obvious morphological discontinuities, were found between the normal and...

journal_title：Journal of plant research

authors： Yokoyama J,Fukuda T,Tsukaya H

更新日期：2003-08-01 00:00:00

abstract：:Recent progress in the study of cytokinin metabolism in plants indicates that quantitative analysis of cytokinin nucleotides is essential for elucidation of early steps of the biosynthetic pathway. However, traditional procedures for purification and quantification of cytokinin cannot discriminate the various nucleoti...

journal_title：Journal of plant research

authors： Takei K,Yamaya T,Sakakibara H

更新日期：2003-06-01 00:00:00

abstract：:Carbon autonomy of current-year shoots in flowering, and of current-year shoots plus 1-year-old shoots (1-year-old shoot system) in fruiting of Siberian alder (Alnus hirsuta var. sibirica) was investigated using a stable isotope of carbon, (13)C. The current-year shoot and 1-year-old shoot systems were fed (13)CO(2) a...

journal_title：Journal of plant research

authors： Hasegawa S,Koba K,Tayasu I,Takeda H,Haga H

更新日期：2003-06-01 00:00:00

abstract：:The effects of sugars on root growth and on development of adventitious roots were analyzed in Arabidopsis thaliana. Seeds were sown on agar plates containing 0.0-5.0% sugars and placed vertically in darkness (DD) or under long day (LD, 16 h:8 h) conditions, so that the seedlings were constantly attached to the agar m...

journal_title：Journal of plant research

authors： Takahashi F,Sato-Nara K,Kobayashi K,Suzuki M,Suzuki H

更新日期：2003-04-01 00:00:00

abstract：:Approximately one-fourth of Japan's native plant species are threatened with extinction. To conserve these species, it is critical to evaluate genetic diversity at species-level and population-level. Some factors, including population size and geographic distribution, are known to influence the population genetic dive...

journal_title：Journal of plant research

authors： Maki M

更新日期：2003-04-01 00:00:00

abstract：:In mature megaspores of Selaginella diffusa (C. Presl) Spring the units of the exospore are ordered and become unordered toward the outer and inner surfaces. The exospore surface is coated with silica at maturity. The insertion of the future gap begins in early stages with formation of many minigaps within the inner p...

journal_title：Journal of plant research

authors： Morbelli MA,Rowley JR,El-Ghazaly G

更新日期：2003-02-01 00:00:00

abstract：:The application of sieving techniques to bulk samples from the Ashizawa Formation, Futaba Group (Lower Coniacian) of northeastern Honshu, Japan, has yielded well-preserved mesofossil assemblages comparable with those recently described from eastern North America, Europe, and central Asia. Among the most abundant and d...

journal_title：Journal of plant research

authors： Takahashi M,Crane PR,Manchester SR

更新日期：2002-12-01 00:00:00

abstract：:Clematis stans is dioecious semi-arboreal, with pale purple-blue, nodding, tubulous flowers in a paniculate inflorescence. Both male and female flowers produce nectar from the base of the calyx tube during a flowering period of 3 or 4 days, and are pollinated by two bumblebee species, Bombus diversus and B. honshuensi...

journal_title：Journal of plant research

authors： Dohzono I,Suzuki K

更新日期：2002-10-01 00:00:00

abstract：:Comprehensive analysis of genetic information in higher plants is under way for several plants of biological and agronomical importance. Among them, Arabidopsis thaliana, a member of Brassica family, and Oryza sativa(rice) have been chosen as model plants most suitable for genome analysis. Sequencing of the genome of ...

journal_title：Journal of plant research

authors： Tabata S

更新日期：2002-08-01 00:00:00

abstract：:We used sequence variation of the atpB- rbcL intergenic spacer of cpDNA and nested clade analysis to assess the phylogeographic pattern of Michelia formosana, a species restricted to Taiwan and the Ryukyus. In total, 31 haplotypes were identified and clustered into four major chlorotypes. Genetic composition of nearly...

journal_title：Journal of plant research

authors： Lu SY,Hong KH,Liu SL,Cheng YP,Wu WL,Chiang TY

更新日期：2002-06-01 00:00:00

abstract：:The mist culture system was conducted to study secreted polysaccharides from soybean ( Glycine max) roots grown for 15 days. Roots were rinsed with distilled water (DW) for 15 min, then with 30 mM oxalic acid (OXA) for 15 min to remove ionically bound sugar. Released sugars were further fractionated into low (L) and h...

journal_title：Journal of plant research

authors： Timotiwu PB,Sakurai N

更新日期：2002-04-01 00:00:00

abstract：:Bracts that lacked chlorophyll were compared with rosette leaves on the Chinese glasshouse plant Rheum alexandrae Batalin. The structures were analyzed anatomically and with photospectrometry. Histological features were significantly different between the bracts and the rosette leaves. Epidermal pavement cells and pal...

journal_title：Journal of plant research

authors： Tsukaya H

更新日期：2002-02-01 00:00:00

abstract：:In young cucumber seedlings, the peg is a polar out-growth of tissue that functions by snagging the seed coat, thereby freeing the cotyledons. Previous studies have indicated that peg formation is gravity dependent. In this study we analyzed peg formation in cucumber seedlings (Cucumis sativus L. cv Burpee Hybrid II) ...

journal_title：Journal of plant research

authors： Link BM,Cosgrove DJ

更新日期：1999-12-01 00:00:00

abstract：:Experimental conditions for efficient callus initiation from mangrove plants were investigated. As a source explant, leaf ofBruguiera sexangula was used. Mangrove plant is one of the most famous woody plants which can grow at the salty area. The initiated callus can be a suitable material for the investigation of salt...

journal_title：Journal of plant research

authors： Mimura T,Mimura M,Washitani-Nemoto S,Sakano K,Shimmen T,Siripatanadilok S

更新日期：1997-03-01 00:00:00

abstract：:The seminal root system of wheat (Triticum aestivum L.) is composed of the primary seminal root, the first pair of seminal roots, and the second pair of seminal roots, which are known to grow in different directions. The direction of root growth, which can be expressed by theta (the angle between the root and the plum...

journal_title：Journal of plant research

authors： Nakamoto T,Oyanagi A

更新日期：1996-12-01 00:00:00

abstract：:The elongation growth of the hypocotyls of radish and cucumber seedlings was examined under hypergravity in a newly developed centrifuge (Kasahara et al. 1995). The effects of hypergravity on elongation growth differed between the two species. The rate of elongation of radish hypocotyls was reduced under basipetal hyp...

journal_title：Journal of plant research

authors： Kasahara H,Shiwa M,Takeuchi Y,Yamada M

更新日期：1995-03-01 00:00:00