Germination in Two Australian Species of Frankenia L., F. Serpyllifolia Lindl. and F. Foliosa J.M.Black (Frankeniaceae) – Effects of Seed Mass, Seed Age, Light, and Temperature.

Our understanding of nutrient transfer between host and flowering parasitic plants is usually based mainly on physiological concepts, with little information on haustorial structure related to function. The aim of this paper is to study the haustorial interface and possible pathways of water and solute transfer between a number of host and parasites.Haustorial tissues were fixed in glutaraldehyde and embedded in glycol methacrylate (LM), or fixed in glutaraldehyde then OsO4 and embedded in Spurr’s resin (TEM).Our study shows that lumen to lumen continuity occurs between tracheary elements of a host and four S.W. Australian species of aerial mistletoes (Fig. 1), and some root hemiparasites (Exocarpos spp. and Anthobolus foveolatus) (Fig. 2). On the other hand, haustorial interfaces of the root hemiparasites Olax phyllanthi and Santalum (2 species) are comprised mainly of parenchyma, as opposed to terminating tracheads or vessels, implying that direct solution transfer between partners via vessels or tracheary elements may be limited (Fig. 3).

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Rediagnoses of the Asian genera Xylaplothrips and Mesandrothrips (Thysanoptera, Phlaeothripinae, Haplothripini), with keys to Australian species

Zootaxa ◽

10.11646/zootaxa.4613.2.6 ◽

2019 ◽

Vol 4613 (2) ◽

pp. 327

Author(s):

LAURENCE A. MOUND ◽

DESLEY J. TREE

Keyword(s):

Southeast Asia ◽

Type Species ◽

New Combination ◽

New Combinations ◽

Single Female ◽

Australian Species ◽

Incertae Sedis

The genus Xylaplothrips is re-diagnosed, 11 species are listed as appropriately included in this genus of which three are new combinations from Haplothrips (X. acaciae; X. collyerae; X. gahniae). A further six species are listed as incertae sedis within Xylaplothrips and a key is provided to the four species of this genus known from Australia including X. anarsius sp.n. The genus Mesandrothrips is recalled from synonymy with Xylaplothrips, and a list is provided of 20 appropriately included species of which 14 are new combinations from Xylaplothrips (M. caliginosus; M. clavipes; M. darci; M. dubius; M. emineus; M. flavitibia; M. flavus; M. inquilinus; M. montanus; M. pictipes; M. pusillus; M. reedi; M. subterraneus; M. tener), and one is a new combination from Haplothrips (M. inquinatus). A key is provided to 10 species of this genus known from Australia, including three species transferred from Haplothrips, together with M. austrosteensia sp.n., M. googongi sp.n., M. kurandae sp.n., M. lamingtoni sp.n. and M. oleariae sp.n. The type species, M. inquilinus, is widespread across Southeast Asia as an invader of thrips galls, and Haplothrips darci Girault based on a single female from Queensland is considered closely related.

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PLANTING DENSITY INFLUENCES THE EXPRESSION OF GENETIC VARIATION IN SEED MASS IN WILD RADISH (RAPHANUS SATIVUS L.: BRASSICACEAE)

American Journal of Botany ◽

10.1002/j.1537-2197.1992.tb13715.x ◽

1992 ◽

Vol 79 (10) ◽

pp. 1185-1193 ◽

Cited By ~ 19

Author(s):

Susan J. Mazer ◽

Lorne M. Wolfe

Keyword(s):

Genetic Variation ◽

Raphanus Sativus ◽

Seed Mass ◽

Planting Density ◽

Wild Radish ◽

Raphanus Sativus L

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Nomenclatural corrections to Australian species of Cricotopus (Wulp) (Diptera; Chironomidae)

Zootaxa ◽

10.11646/zootaxa.3980.2.11 ◽

2015 ◽

Vol 3980 (2) ◽

pp. 298 ◽

Cited By ~ 2

Author(s):

PETER S. CRANSTON ◽

MATT N. KROSCH

Keyword(s):

Australian Species

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Lecanactis (Roccellaceae) in Tasmania, with the description of a new saxicolous species and a revised key for the genus in Australia

The Lichenologist ◽

10.1017/s0024282920000456 ◽

2021 ◽

Vol 53 (1) ◽

pp. 95-101

Author(s):

Gintaras Kantvilas

Keyword(s):

New Zealand ◽

New South ◽

First Record ◽

New Taxon ◽

European Species ◽

Australian Species ◽

South Wales ◽

Distribution And Ecology ◽

Tasmanian Endemic ◽

First Time

AbstractThe lichen genus Lecanactis Körb. in Tasmania comprises six species: L. abietina (Ach.) Körb., which is widespread and pan-temperate; L. latispora Egea & Torrente and L. neozelandica Egea & Torrente, both shared with New Zealand and with the former recorded here from the Auckland Islands for the first time; L. mollis (Stirt.) Frisch & Ertz, shared with Victoria and New Zealand; L. aff. dilleniana (Ach.) Körb., a European species recorded provisionally for Tasmania on the basis of several sterile collections; L. scopulicola Kantvilas, which is described here as new to science and apparently a Tasmanian endemic. This new taxon occurs in rocky underhangs and is characterized by a thick, leprose thallus containing schizopeltic acid, and 3-septate ascospores, 19–30 × 4.5–6 μm. Short descriptions and a discussion of distribution and ecology are given for all species. A key for all 11 Australian species of the genus is provided, including L. subfarinosa (C. Knight) Hellb. and L. tibelliana Egea & Torrente, which are recorded for Australia for the first time, and L. platygraphoides (Müll.Arg.) Zahlbr., a first record for New South Wales. Lecanactis spermatospora Egea & Torrente and L. sulphurea Egea & Torrente are also included.

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Analysis of the Physical Properties of Seeds of Selected Viburnum Species for the Needs of Seed Sorting Operations

Processes ◽

10.3390/pr9040711 ◽

2021 ◽

Vol 9 (4) ◽

pp. 711

Author(s):

Zdzisław Kaliniewicz ◽

Dariusz J. Choszcz

Keyword(s):

Physical Properties ◽

Ornamental Plants ◽

Seed Mass ◽

Terminal Velocity ◽

Landscape Design ◽

Physical Parameters ◽

Regression Analyses ◽

Uniform Size ◽

Size Fractions ◽

Physical Attributes

Viburnum is a genus of colorful and ornamental plants popular in landscape design on account of their high esthetic appeal. The physical properties of viburnum seeds have not been investigated in the literature to date. Therefore, the aim of this study was to characterize the seeds of selected Viburnum species and to search for potential relationships between their physical attributes for the needs of seed sorting operations. The basic physical parameters of the seeds of six Viburnum species were measured, and the relationships between these attributes were determined in correlation and regression analyses. The average values of the evaluated parameters were determined in the following range: terminal velocity—from 5.6 to 7.9 m s−1, thickness—from 1.39 to 1.87 mm, width—from 3.59 to 6.33 mm, length—from 5.58 to 7.44 mm, angle of external friction—from 36.7 to 43.8°, mass—from 16.7 to 35.0 mg. The seeds of V. dasyanthum, V. lentago and V. sargentii should be sorted in air separators, and the seeds of V. lantana and V. opulus should be processed with the use of mesh screens with round apertures to obtain uniform size fractions. The seeds of V. rhytodophyllum cannot be effectively sorted into batches with uniform seed mass, but they can be separated into groups with similar dimensions.

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Physical properties and water absorption kinetics of three varieties of Mucuna beans

Scientific Reports ◽

10.1038/s41598-021-85087-8 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Ajibola B. Oyedeji ◽

Olajide P. Sobukola ◽

Ezekiel Green ◽

Oluwafemi A. Adebo

Keyword(s):

Physical Properties ◽

Water Absorption ◽

Rate Constant ◽

Geometric Mean ◽

Seed Mass ◽

Activation Energies ◽

Mucuna Pruriens ◽

Absorption Kinetics ◽

Kinetics Of ◽

Soaking Temperature

AbstractThe physical properties and water absorption kinetics of three varieties of Mucuna beans (Mucuna pruriens, Mucuna rajada and Mucuna veracruz) were determined in this study. Physical properties including length, width, thickness, geometric mean diameter, sphericity, porosity, bulk density, area, volume and one thousand seed mass were calculated while hydration kinetics was studied by soaking Mucuna beans in water at 30 °C, 40 °C and 50 °C and measuring water uptake at 9 h interval. Peleg’s equation was used to model the hydration characteristics and Arrhenius equation was used to describe the effect of temperature on Peleg’s rate constant k1 and to obtain the activation energies for soaking. Significant variations were observed in almost all the physical properties of the different varieties, however, there were no significant differences (p < 0.05) in their thicknesses and bulk densities. The effectiveness of fit of Peleg’s model (R2) increased with increase in soaking temperature. Peleg’s rate constant k1 decreased with increase in soaking temperature while k2 increased with temperature increase. Activation energies of Mucuna pruriens, Mucuna rajada and Mucuna veracruz were 1613.24 kJ/mol, 747.95 kJ/mol and 2743.64 kJ/mol, respectively. This study provides useful information about the properties of three varieties of Mucuna beans that could be of importance to processors and engineers for process design and optimization.

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Characterization and Evaluation of Salvia hispanica L. and Salvia columbariae Benth. Varieties for Their Cultivation in Southwestern Germany

Agronomy ◽

10.3390/agronomy10122012 ◽

2020 ◽

Vol 10 (12) ◽

pp. 2012

Author(s):

Samantha Jo Grimes ◽

Filippo Capezzone ◽

Peteh Mehdi Nkebiwe ◽

Simone Graeff-Hönninger

Keyword(s):

Seed Mass ◽

Point Of View ◽

Raw Material ◽

Salvia Hispanica ◽

Environmentally Sustainable ◽

Chia Seed ◽

Increasing Demand ◽

Salvia Hispanica L ◽

Reported Data ◽

Seed Yields

Rising consumer attraction towards superfoods and the steadily increasing demand for healthy, environmentally sustainable, and regionally produced food products has sharpened the demand for chia. Over the course of 4 years, two early flowering chia varieties belonging to Salvia hispanica L., and Salvia columbariae Benth. Species were identified to complete their phenological development and, therefore, able to reach maturity under a photoperiod >12 h, thus enabling the cultivation of chia in central Europe—more specifically, in southwestern Germany—consistently for the first time. Results obtained by the conducted field trial in 2018 showed that chia seed yields and thousand-seed mass ranged from 284.13 to 643.99 kg ha−1 and 0.92 to 1.36 g, respectively. Further, the statistical analyses showed that the protein content of the cultivated chia varieties ranged from 22.14 to 27.78%, the mucilage content varied from 10.35 to 20.66%, and the crude oil content amounted up to 28.00 and 31.73%. Fatty acid profiles were similar to previously reported data with α-Linolenic acid being the most prominent one, ranging from 60.40 to 65.87%, and we obtained ω6:ω3 ratios between 0.2 and 0.3. In conclusion, chia could represent a promising raw material from a nutritional point of view, while being able to diversify the local food basis of southwestern Germany.

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