Journal of Plant Research
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Two types of partial fertility in a diploid population of the fern Thelypteris decursive-pinnata (Thelypteridaceae)
Journal of Plant Research - - 2012
Unique after-hyperpolarization accompanying action potential inChara globularis
Journal of Plant Research - Tập 107 - Trang 371-375 - 1994
A unique after-hyperpolarization was found in internodal cells ofChara globularis. The cells generated an ordinary action potential due to regenerative depolarization induced by the outward electric current pulse larger than a threshold stimulus. After reaching a depolarizing peak, the membrane potential repolarized and overshooted the resting potential to a value which was somehow 40 mV more nega......
The remarkable genus Coptosapelta (Rubiaceae): pollen and orbicule morphology and systematic implications
Journal of Plant Research - Tập 117 - Trang 57-68 - 2003
The pollen morphology and distribution of orbicules were investigated in ten species of the genus Coptosapelta (Rubiaceae) using light, scanning electron and transmission electron microscopy. In general, Coptosapelta pollen is three- to five-pororate and suboblate to oblate-spheroidal. The sexine ornamentation varies from psilate to reticulate, and the pollen-wall stratification lacks columellae. ......
Induction of hydrotropism in clinorotated seedling roots of Alaska pea,Pisum sativum L.
Journal of Plant Research - Tập 109 - Trang 335-337 - 1996
Roots of the agravitropic pea (Pisum sativum L.) mutantageotropum show positive hydrotropism, whereas roots of Alaska peas are hydrotropically almost non-responsive. When the gravitropic response was nullified by rotation on clinostats, however, roots of Alaska peas showed unequivocal positive hydrotropism in response to a water potential gradlent. These results suggest that roots of Alaska peas p......
Structure and dynamics of natural populations of polyploid trilliums
Journal of Plant Research - Tập 101 - Trang 121-130 - 1988
To confirm predominant self-pollination in natural populations ofTrillium apetalon (2n=4x=20, SSUU), chromosome constitutions of endosperms (2n=30, SSSUUU) fertilized in nature were analyzed for the patterns of H-segments of cold-treated chromosomes. The endosperms were of two kinds: homo-constitutions in which three chromosomes in each of the ten sets of homologues were of the same patterns of H-......
Chloroplast DNA phylogeography of Betula maximowicziana, a long-lived pioneer tree species and noble hardwood in Japan
Journal of Plant Research - Tập 123 - Trang 343-353 - 2009
Betula maximowicziana is an ecologically and economically important tree species in Japan. In order to examine the phylogeographical pattern of the species in detail, maternally inherited chloroplast (cp) DNA variations of 25 natural populations of Betula maximowicziana and a total of 12 populations of three related species were evaluated by PCR-RFLP analysis. Two main haplotypic groups of B. maxi......
Plant species diversity, community structure and invasion status in insular primary forests on the Sekimon uplifted limestone (Ogasawara Islands)
Journal of Plant Research - Tập 131 - Trang 1001-1014 - 2018
Native forests on oceanic islands are among the most threatened ecosystems. The forests formed on Sekimon uplifted limestone in Haha-jima Island (Ogasawara Islands) have not yet been destroyed by human activities and remain as primary forests harboring several narrow endemic endangered plants. In this paper, we described the plant species diversity, community structure, and status of invasion by a......
Fibrinolytic activity of some fungi isolated from self-heated composted fertilizer
Journal of Plant Research - Tập 103 - Trang 313-324 - 1990
Mesophilic fungi isolated from organic fertilizer compost samples accounted for 70.94% of the total fungal count, while thermophilic and thermotolerant fungi constituted 29.05% of that count. Eight mesophilic fungal species, namelyAspergillus niger, Monilia sitophila, Paecilomyces divaricata, Penicillium chrysogenum, P. fellutanum, Scopulariopsis brevicaulis, S. brumptii andZygorhynchus japonicus;......
Developing a Photoautotrophic Micropropagation System for Woody Plants
Journal of Plant Research - Tập 114 - Trang 525-537 - 2001
including cotyledonary stage somatic embryos have the ability to grow photoautotrophically (without sugar in the culture medium), and that the low or negative net photosynthetic rate of plants in vitro is due not to poor photosynthetic ability, but to the low CO2 concentration in the air-tight culture vessel during the photoperiod. Furthermore, we have shown that the photoautotrophic growth of se......
Virtual issue: Ecology and evolution of pteridophytes in the era of molecular genetics
Journal of Plant Research - Tập 132 Số 6 - Trang 719-721 - 2019
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