174,942 research outputs found
Lejeunea apiahyna Singh 2013, comb. nov.
No full textLejeunea apiahyna (Steph.) Sushil K. Singh, comb. nov. Basionym:— Otigoniolejeunea apiahyna Steph., Sp. Hepat. 5: 514. 1914 (Stephani, 1914). Holotype:— BRAZIL. Apiahy, J. Puiggari 1412d (G-69721, http://www.ville-ge.ch/musinfo/bd/cjb/chg/adetail.php?id=134199&lang=en).Published as part of Singh, S. K., 2013, New combinations in Lejeunea with a new name to Otigoniolejeunea indica, pp. 63-64 in Phytotaxa 96 (1) on page 63, DOI: 10.11646/phytotaxa.96.1.3, http://zenodo.org/record/507234
Invariant rings of the special orthogonal group have nonunimodal h -vectors
No full textFor K an infinite field of characteristic other than two, consider the action of the special orthogonal group SOt(K) on a polynomial ring via copies of the regular representation. When K has characteristic zero, Boutot's theorem implies that the invariant ring has rational singularities; when K has positive characteristic, the invariant ring is F-regular, as proven by Hashimoto using good filtrations. We give a new proof of this, viewing the invariant ring for SOt(K) as a cyclic cover of the invariant ring for the corresponding orthogonal group; this point of view has a number of useful consequences, for example, it readily yields the a-invariant and information on the Hilbert series. Indeed, we use this to show that the h-vector of the invariant ring for SOt(K) need not be unimodal
Lejeunea quinqueumbonata var. rotundata Singh 2013, comb. nov.
No full textLejeunea quinqueumbonata Spruce var. rotundata (Herzog) Sushil K. Singh, comb. nov. Basionym:— Otigoniolejeunea quinqueumbonata Spruce var. rotundata Herzog, Rev. Bryol. Lichénol. 20: 154, 1951 (Herzog 1951). Holotype:— HONDURAS. Department of Atlantida: Lancetilla Valley, near Tela, alt. 20-600 m, P. C. Standley 55379 (JE-4001622, http://herbarium.univie.ac.at/database/detail.php? ID =104299).Published as part of Singh, S. K., 2013, New combinations in Lejeunea with a new name to Otigoniolejeunea indica, pp. 63-64 in Phytotaxa 96 (1) on page 64, DOI: 10.11646/phytotaxa.96.1.3, http://zenodo.org/record/507234
Uranyl nitrate-induced glomerular-basement-membrane alterations in rabbits: a quantitative-analysis
No full textPT: J; CR: AVASTHI PS, 1980, J CLIN INVEST, V65, P121 BLANTZ RC, 1985, KIDNEY INT, V28, P733 FOULKES EC, 1971, TOXICOL APPL PHARM, V20, P380 HAYASHIDA M, 1986, EXP GERONTOL, V21, P535 KANWAR YS, 1979, J CELL BIOL, V81, P137 KOBAYASHI S, 1984, KIDNEY INT, V26, P808 LATOUCHE YD, 1987, HEALTH PHYS, V53, P147 OSTERBY R, 1971, LAB INVEST, V25, P15 OSTRBY R, 1975, ACTA MED SCAND S, V574, P1 SEILER MW, 1975, SCIENCE, V189, P390 SINGH A, 1981, PATHOLOGY, V13, P487 SINGH A, 1985, ANN M AM ASS ADV SCI STEFFES MW, 1983, LAB INVEST, V49, P82 STEIN JH, 1975, KIDNEY INT, V8, P27 WEHNER H, 1973, DIABETOLOGIA, V9, P255; NR: 15; TC: 4; J9: BULL ENVIRON CONTAM TOXICOL; PG: 7; GA: HC562Source type: Electronic(1
Anemone pindariensis Harsh Singh & S. K. Barik 2021, sp. nov.
No full textAnemone pindariensis Harsh Singh & S.K. Barik sp. nov. (Figs. 1–4) Diagnosis:— Anemone pindariensis differs from its closely related A. rivularis in its sepal and stamen. A. pindariensis has densely hairy (vs. glabrous in A. rivularis), rounded to elliptic to oblong (vs. ovate to obovate), 4–5 (vs. 5–8) sepals, uniquely greenish-yellow sepals (vs. white-blue sepals), circinnately arranged staminodes around the stamens (vs. absence of staminodes), densely hairy filaments (vs. glabrous) and oblong (vs. ellipsoid or ovoid) anthers. TYPE:— India. Uttarakhand, on way to Dwali, Pindari glacier, 25.6.2018, 30°07’36” N; 79°57’30”E, altitude 2434 m asl, Harsh Singh 303770 (holotype LWG; isotype LWG). Perennial herb, 40–60 cm long, erect, pubescent; rootstock woody. Leaves basal and cauline; basal leaves longpetiolated; petiole 6–18 cm long, pubescent; lamina cordate-orbicular, 5–6 × 10–13 cm, ternate, petiole 0.2–0.3 cm long, densely pubescent, central part broadly rhombic-ovate, apex acute; lateral segments 2-parted, obliquely flabellate, ultimate lobules oblong, surface strigose both adaxially and abaxially. Scapes 1–3, ca. 25–40 cm; 2-or 3 branched. Involucral bracts 2; petiole flat, 1–1.5 cm, winged; bract blade similar to that of leaves, 3-parted, rhombic, 4–9 cm, puberulent, margin serrate. Bracteoles similar to involucre bracts, 2.5–4.0 cm long, 3.0–4.0 cm wide. Flowers greenish-yellow, 2–3 in compound cyme. Sepals 4–5, 14– 15 mm long, 9–12 mm wide, rounded, ovate to obovate, sometimes spathulate with claw, densely hairy on both surfaces, margin entire, apex obtuse to rounded. Staminodes present, circinnately arranged around the stamens, densely golden hairs throughout, tri-lobed, 7.7–8.5 mm long; stamens 30–50, ca. 5 mm long, few filaments densely hairy or glabrous, if glabrous filiform, ca. 3.8 mm long; anthers oblong, 0.9–1.1 mm long, apex obtuse. Carpel 10–15, 2.0– 2.8 mm long, 0.5–0.7 mm wide, glabrous; ovary ovoid, ca. 1.9 mm long, style circinate above, 1.3–1.8 mm long. Flowering:— June–July. Habitat:— It grows along the mountain slopes of the valleys in open meadows at an altitude of 2400 m a.s.l. The common associates are Stellaria sp., Roscoea alpine Royle (1839: 361), Rubia sp. Etymology:— The specific epithet ‘ pindariensis ’ is derived from the type locality Pindari glacier in Western Himalayas of Uttarakhand, India.Published as part of Singh, Harsh & Barik, S. K., 2021, Anemone pindariensis sp. nov., a new species from Pindari valley of the Western Himalaya, India, pp. 289-295 in Phytotaxa 516 (3) on pages 289-290, DOI: 10.11646/phytotaxa.516.3.8, http://zenodo.org/record/537193
Pseudocercospora rauvolfiicola A. Singh, P. N. Singh and N. K. Dubey 2022, sp. nov.
No full textPseudocercospora rauvolfiicola A. Singh, P.N. Singh and N.K. Dubey sp. nov. Fig 1–4 MycoBank: MB 834637 Etymology. Name refers to Rauvolfia, the host genus from where the fungus was isolated. Culture characteristics – Colonies after 21 days at 27 ° C on Oat Agar (OA) blackish grey, velvety, mycelium sparse, sulcate, reverse blackish grey reaching 30 mm diameter. On Potato Dextrose Agar (PDA) erumpent in centre, margin lobed, grayish black, velvety, reverse black, upto 16 mm. Pathogen on Rauvolfia serpentina Leaf spots dark blackish brown with yellowish encircling area on the upper leaf surfaces, grayish brown on lower surfaces, circular to irregular. Caespituli hypophyllous, substomatal. Mycelium internal, branched. Asexual morph: Stromata substomatal, pseudoparenchymatous, light yellowish brown to light brown, globular, few cells to 13 µm filling stomatal opening, Conidiophores 14–35.5 × 2–3 µm (x̅= 24×3, n=40) macronematous, mononematous, olivaceous brown to light brown, paler towards the tip, fasciculate in divergent fascicles (up to 14), smooth, 0–3 septate, branched, straight to curved, geniculate, sub cylindrical. Conidiogenous cells polyblastic, integrated, terminal, pale olivaceous, smooth, geniculate, scar unthickened. Conidia 9.5–56.5 × 2–3.5 µm (x̅= 36×3 µm, n =40), solitary to branched in chains, acropleurogenous, holoblastic, pale brown, subcylindrical to obclavate, apex obtuse to subacute, base obconico truncate, ramoconidium present, straight to curved, 1–5 septate, hilum unthickened. Type. India, Uttar Pradesh, Sonebhadra, leaf spots on Rauvolfia serpentina (L.) Benth.ex Kurz (Apocynaceae), 15 Dec. 2019, Archana Singh, AMH-10139 (Holotype), BHUAS/19/23 (Isotype), NFCCI 4586 (ex-type living culture), ITS, LSU, ACT and TEF sequences GenBank MT068200.1, MT102882.1, MW496125, MW496126.Published as part of Singh, Archana, Singh, Paras Nath & Dubey, Nawal Kishore, 2022, Morphology and Phylogeny of a new species Pseudocercospora rauvolfiicola on medicinal plant Rauvolfia serpentina from Sonebhadra Forest, Uttar Pradesh, India, pp. 128-138 in Phytotaxa 545 (2) on page 131, DOI: 10.11646/phytotaxa.545.2.2, http://zenodo.org/record/653463
Ultrastructure of the thyroid-glands of rats fed photomirex: an 18-month recovery study
No full textPT: J; CR: CARLSON DA, 1976, SCIENCE, V194, P939 CHU I, 1981, TOXICOLOGY, V21, P235 COLLINS WT, 1977, AM J PATHOL, V84, P119 ERICSON LE, 1981, MOL CELL ENDOCRINOL, V22, P1 FUJITA H, 1975, INT REV CYTOL, V40, P197 FUJITA H, 1980, J GERONTOL, V35, P3 GARNER HS, 1975, J GERONTOL, V30, P137 HALLETT DJ, 1976, J AGR FOOD CHEM, V24, P1189 HALLETT DJ, 1978, J AGR FOOD CHEM, V26, P388 IVES PJ, 1975, MECHANISMS AGEING DE, V4, P399 KASZA L, 1978, J ENVIRON PATHOL TOX, V1, P587 MIQUELIS R, 1981, EUR J CELL BIOL, V24, P70 PENEL C, 1981, EXPERIENTIA, V37, P1010 SINGH A, J ENV PATHOL TOXICOL SINGH A, ZENTRALBL VET C SINGH A, 1981, PATHOLOGY, V13, P487 VANDENHOVEVANDE.MF, 1980, THYROID GLAND, P61 VANHERLE AJ, 1979, NEW ENGL J MED, V301, P239 VILLENEUVE DC, 1979, TOXICOL APPL PHARM, V47, P105; NR: 19; TC: 9; J9: TOXICOLOGY; PG: 11; GA: NW764Source type: Electronic(1
Investigating Genetic Diversity and Population Structure in Rice Breeding from Association Mapping of 116 Accessions Using 64 Polymorphic SSR Markers
No full textGenetic variability in rice breeding programs plays a very crucial role. It provides an outstanding pool of superior alleles governing better agronomic and quality characters through association mapping. For a greater understanding of population structure, the genetic relationship among different rice lines is indispensable prior to the setting of a correlation among dynamic alleles and traits. In the present investigation, the genetic diversity and population structure of 116 rice accessions were studied to understand genetic relatedness and diversity among them using 64 polymorphic SSR markers. A genotyping assessment based on SSR markers revealed a total of 225 alleles, with an average PIC value of 0.755. The germplasm lines were classified into three distinct subgroups through population structure analysis, utilizing both model- and distance-based approaches. AMOVA analysis showed that 11% of the total variation could be attributed to differences between groups, while the remaining 89% was likely due to differences within groups. This study suggested that population structure and genetic relatedness should be considered to establish marker-trait associations for association mapping when working with the core collection of germplasm lines
Katha volynkini Joshi & Singh & Singh 2018, sp. nov.
No full textKatha volynkini Joshi & Singh, sp. nov. (Figs. 1, 13–14) Type locality: Garampani, Meghalaya, India. Type material: Holotype, ♂, INDIA, Meghalaya, Garampani, 09.IX.09 (Coll. R Joshi; Reg. no. PUP /RJ/135). One paratype: INDIA, Mizoram, Champhai, 27.IX.09 – 1♂.(Coll. R. Joshi; Reg. no. PUP/RJ/135a). Description: Adult (Fig. 1). Forewing length 14mm.Head with frons brown; vertex yellow. Antennae simple, brown. Labial palpi yellow, black at tips. Thorax with patagia and tegulae dark yellow; pectus pale yellow. Forewing creamish yellow with velvety texture; apex with more tinge of yellow; a deep groove from base of cell to tornus; underside minutely suffused with fuscous, termen pale; inner margin excurved at subbasal area. Hindwing concolourous. Legs black, suffused with some yellow on forelegs. Abdomen yellowish with some white at base. Male genitalia(Fig. 13) with uncus broad, sparsely setose, apically hooked; tegumen smaller than the very long vinculum; saccus deep v-shaped, with knob-like tip. Valvae typical of the genus, distal saccular process ending in a small spine. Juxta rectangular. Aedeagus (Fig. 14) moderately short and broad; vesica four lobed, apical lobe with female shoe shaped spine and basal lobe with a stout, blade-like spine; one lateral lobe with a dentate sclerotized plate, another with a field of minute spines. Diagnosis: Externally, the species of Katha are very similar to each other and are better diagnosed on the basis of male genitalia. Due to the absence of apical spine in aedeagus, and presence of two spines and a dentate plate in vesica, K. volynkini sp. nov. (Figs. 1, 13–14) is closely similar to K. conformis (Figs. 2, 15–16) but can be distinguished from it in the following attributes: a field of minute spines on a lobe opposite to the dentate plate is present; apical lobe of vesica is short with a female shoe shaped apical spine, vinculum broad “v”-shaped and saccus knobbed. Whereas, K. conformis lacks the field of minute spines, characteristic for the new species; the apical lobe of vesica is tubular with a nail like apical spine; the vinculum is narrow, “v”-shaped and the saccus is simple. Other closely related species is K. suffusa, which differs from the new species in the presence of single spine in vesica. Etymology: The species name is dedicated to Dr. Anton Volynkin, Arctiinae specialist from Tomsk, Russia.Published as part of Joshi, Rahul, Singh, Navneet & Singh, Jagbir, 2018, Description of a new Katha species from India, with a key to the Oriental species (Lepidoptera, Erebidae, Arctiinae), pp. 435-442 in Zootaxa 4407 (3) on page 436, DOI: 10.11646/zootaxa.4407.3.10, http://zenodo.org/record/121652
IDEALS GENERATED BY POWER SUMS
No full textWe consider ideals in a polynomial ring generated by collections of power sum polynomials, and obtain conditions under which these define complete intersection rings, normal domains, and unique factorization domains. We also settle a key case of a conjecture of Conca, Krattenthaler, and Watanabe, and prove other results in that direction
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