scholarly journals The formation of the anthocyan pigments of plants. - Part VI

1913 ◽  
Vol 87 (593) ◽  
pp. 113-131 ◽  
Keyword(s):  
Dilute Acid ◽  
Present Communication ◽  
Pigment Formation ◽  
Yellow Colour ◽  
Pale Yellow ◽  
Deep Yellow ◽  
Cheiranthus Cheiri

In the previous communications of this series we have recorded the results of observations on the oxydases and chromogens concerned with the production of anthocyan pigments. The study of pigment formation is continued in the present communication, the sections of which deal with the following subjects :— 1. A pigment-producing glucoside of the wallflower ( Cheiranthus Cheiri ). 2. The formation of pigment-producing substances from glucosides. 3. The biochemistry of Mendelian colour characters Section 1.— A Pigment-producing Glucoside of the Wallflower. It is customary to divide the sap-pigments of plants into two series, the red, purple, and blue anthocyan pigments, and the yellow xanthein pigments. Miss Wheldale has, however, suggested, on genetical grounds, that the anthocyan and xantheiu pigments are related with one another. This author points out that most plants contain colourless or pale yellow substances which give a canary yellow colour with ammonia. When heated with dilute acid they assume a deep yellow colour and reduce Fehling’s solution. Hence, they are to be regarded as glucosides.

scholarly journals A new frog species of the genus Rugosa from Sado Island, Japan (Anura, Ranidae)

Zootaxa ◽  
2012 ◽  
Vol 3575 (1) ◽  
pp. 49 ◽  
Author(s):  
KUNIO SEKIYA ◽  
IKUO MIURA ◽  
MITSUAKI OGATA
Keyword(s):  
New Species ◽  
Ventral Surface ◽  
Entire Body ◽  
Amphibian Species ◽  
Pale Yellow ◽  
Frog Species ◽  
Deep Yellow

We describe a new frog species in the genus Rugosa from Sado Island, Japan. This new species, Rugosa susurra, is ge-netically close to R. rugosa Temminck and Schlegel, but is morphologically distinguishable and postzygotically isolatedfrom the latter species. The skin over the entire body is much smoother, and the abdomen and ventral surface of hindlimbare deep yellow whereas these are pale yellow or grayish yellow in R. rugosa. In addition, duration of the advertisementcall of Rugosa susurra is definitely longer than that of R. rugosa. Rugosa susurra is the first endemic amphibian species to Sado Island in Japan.

scholarly journals IX. On the constitution of the resins

1839 ◽  
Vol 129 ◽  
pp. 119-137
Keyword(s):  
Large Family ◽  
Yellow Colour ◽  
Pale Yellow ◽  
Whole Process ◽  
Relative Composition ◽  
Pale Yellow Colour ◽  
Higher Temperature

The object of the investigation, of which the present paper forms a part, is 1. To determine the relative composition of the various resins which occur in nature. Possessing so many properties in common, this large family of natural productions ought also to present many analogies in constitution. 2. To ascertain how far they may be considered as derivatives from one common radical; and 3. Whether it is possible to represent them all by one or more general formulæ. I. Resin of Mastic. Mastic resin is said to be obtained from the Pistacea lentiscus , and to be produced chiefly in the island of Chios. It occurs in drops or tears, which are transparent, and of a pale yellow colour. It melts at 212°, and emits a peculiar and not unpleasant odour. Fused in a retort it gives off an acid liquid in small quantity. If the heat be raised to 300° Fahr. and upwards, the melted mass froths up, and water and acid vapours are evolved. At a higher temperature a pale yellow liquid distils over very slowly, at first of the consistence of oil, but increasing in thickness as the process proceeds, water and acid being also given off during the whole process. What remains in the retort is of a black colour, and nearly insoluble in alcohol.

scholarly journals TRICHOGRAMMA PRETIOSA, RILEY: COLOUR VARIATION IN THE ADULT, WITH DESCRIPTION OF A NEW VARIETY

1906 ◽  
Vol 38 (3) ◽  
pp. 81-82 ◽  
Author(s):  
A. Arsene Girault
Keyword(s):  
Original Description ◽  
Distinct Species ◽  
New Variety ◽  
Yellow Colour ◽  
Colour Variation ◽  
Pale Yellow ◽  
Pale Yellow Colour ◽  
Trichogramma Minutum

In the original description of this insect, * Dr.Riley says that on account of its uniform pale yellow colour it is easily distinguished from Trichogramma minutum, Riley, which is black. Unfortunately, this does not hold.† Out of the hundreds of specimens of pretiosa reared during the enire season of 1904, at Paris, Texas, from the eggs of Heliothis obsoleta, Fabricius, there appeared from a lot of host eggs on Sept. 20th a number of dark individuals, which could easily have been mistaken for a distinct species.

scholarly journals Chromatic leucism in the flap shell turtle, Lissemys punctata from Bangladesh

2021 ◽  
Vol 10 (2) ◽  
pp. 131-131
Author(s):  
M.F. Rabbe ◽  
M.M. Alam ◽  
M.F. Jaman ◽  
M.S. Hossain ◽  
K.N.M. Sarafat ◽  
...  
Keyword(s):  
Wildlife Conservation ◽  
Freshwater Wetlands ◽  
Yellow Colour ◽  
Pale Yellow ◽  
Green Colour ◽  
Golden Yellow ◽  
Defence Strategy ◽  
Olive Green ◽  
Commercial Trade

The spotted flap shell turtle, Lissemys punctata (Bonnaterre, 1789) has a distribution in Bangladesh, India, Myanmar, Nepal and Pakistan. In Bangladesh, this species is widely distributed throughout the freshwater wetlands and the low-lying floodplains, coastal islands, and hill districts. This species is listed in CITES (Appendix II) and protected by Bangladesh Wildlife Conservation & Security Act 2012 (Schedule II), where commercial trade is strictly prohibited. Lissemys punctata has an oval and domed carapace with olive-green colour spotted by dark yellow blotches. The head is also olive green often with yellow blotches, whereas the plastron is whitish or pale yellow. The colour of this species may vary depending on its habitat and defence strategy. Colour aberration in animals may occur due to a lack of melanin. Golden yellow colour aberration (chromatic leucism) is rare in animals, especially in turtles. This might be because of the absence of melanin in the outer dermis. The presence of high xanthophores and yellow pteridine pigments in the skin are also responsible for the golden yellow colour aberration.

Nomenclatural notes on Iris haussknechtii (Iridaceae)

Phytotaxa ◽  
2019 ◽  
Vol 399 (2) ◽  
pp. 160
Author(s):  
EUGENY V. BOLTENKOV ◽  
RAFAËL GOVAERTS
Keyword(s):  
Chromosome Number ◽  
Close Relative ◽  
Herbarium Specimens ◽  
Original Material ◽  
Wide Sense ◽  
Present Communication ◽  
Generic Level ◽  
Pale Yellow ◽  
Stony Soil

The nomenclatural notes, discussed in the present communication, are based on the revision of Iris Linnaeus (1753: 38) names described from Turkey, considering this genus in its wide sense (e.g., Dykes 1924, Mathew 1989, Güner 2012). Iris haussknechtii Bornm. ex Baker (1892: 4) is a species endemic to Turkey referred to I. ser. Spuriae (Diels 1930: 502) Lawrence (1953: 361) of I. sect. Limniris Tausch (1823: without pagination), treated at the generic level under the name Chamaeiris Medikus (1790: 417) (Crespo 2011, Crespo et al. 2015). It is a rhizomatous, perennial herbaceous, compact plant, with two terminal pale yellow or yellow and white flowers on single stem, the perianth segments with only yellow veins, and the narrow, rather tough leaves slightly shorter than flowers. According to some authors (Dykes 1912, 1924, Peckham 1939, Mathew 1984), it is a close relative to I. sintenisii Janka (1877: 244), except for the colour of the flowers, the shape of the outer perianth segments, the fact that the spathe valves are not sharply keeled (Dykes 1924), and the reported chromosome number: 2n = 18 in I. haussknechtii (Özkan et al. 2001, as “I. kerneriana”) vs 2n = 16 in I. sintenisii (Popova & Ceschmedjiev 1975). Based on herbarium specimens examination (deposited at E, K, and P; acronym according to Thiers 2019), we conclude that I. haussknechtii is distributed in the following northern Turkey provinces: Canakkale, Balikesir, Bolu, Kastamonu, Cankiri, Ankara, Corum, Sinop, Amasya, Tokat, Erzincan, as well as in Eskisehir, Afyonkarahisar, Kirikkale, Kirsehir, and Sivas (A. Güner, pers. comm.). This plant usually occurs in open sites, on stony soil amongst woodland, in dry meadows, scrubland, and on steep stony slopes at elevations ranging from 1150 to 2350 m (Mathew 1984). At the best of our knowledge, the name I. haussknechtii has not yet been typified. After the examination of all the original material and protologue, we designated the lectotype for this name.

scholarly journals VIII. Examination of select vegetable products from India

1856 ◽  
Vol 146 ◽  
pp. 141-157 ◽  
Keyword(s):  
Organic Compounds ◽  
Royal Society ◽  
The South ◽  
Yellow Colour ◽  
Vegetable Products ◽  
Deep Yellow ◽  
Extensive Collection

Through the kindness of my esteemed friend Dr. Royle, I have been permitted to select such vegetable products from the extensive collection at the India House as seemed most likely to repay the trouble of investigation. My attention during the last twelve months has been chiefly directed to three of these vegetable substances ; and the results of their examination I now take the liberty of submitting to the Royal Society, to be followed by those of the others as they may be completed. The first of these substances which I examined consisted of a quantity of the roots of the Datisca cannabina , from Lahore, where this plant is employed to dye silk of a fast yellow colour. The roots, which had been cut into pieces about six or eight inches long, were from one-half to three-quarters of an inch in thickness. They had a deep yellow colour. The leaves and smaller branches of the Datisca cannabina from the Levant have long been employed for a similar purpose in the South of France. A decoction of the leaves of the Datisca cannabina was examined by Braconnot in 1816, who discovered in it a crystallizable principle to which he gave the name of datiscine . Braconnot, of course, did not subject this substance to analysis, but he described its appearance and properties in an exceedingly accurate manner. The observations of Braconnot had fallen into such entire oblivion, however, that for many years past, we find in most of the larger systems of chemistry the term datiscine used as synonymous with inuline . Thus in Brande’s 'Chemistry,' vol. ii. page 1168, we find it stated that a variety of names had been given to inuline, such as "dahline, datiscine," &c. In Löwig’s 'Chemistry of Organic Compounds,' vol. i. page 359, the same error is repeated, where, under the article "inuline," the synonyms given are "dahline and datiscine."

scholarly journals The Control of Plastid Pigment Formation by a Virescent Gene, Pale-Yellow-1, of maize.

1956 ◽  
Vol 31 (6) ◽  
pp. 415-420 ◽  
Author(s):  
Robert E. Kay ◽  
Bernard O. Phinney
Keyword(s):  
Pigment Formation ◽  
Pale Yellow

A NEW SPECIES OF PSEUDOHAZIS FROM WASHINGTON (LEPIDOPTERA, SATURNIIDAE)

1944 ◽  
Vol 76 (5) ◽  
pp. 112-112
Author(s):  
W. P. Medlar
Keyword(s):  
New Species ◽  
Anterior Margin ◽  
Brilliant Yellow ◽  
Pale Yellow ◽  
Bright Yellow ◽  
Black Band ◽  
Deep Yellow ◽  
A New Species

Male lappets vivid deep yellow. Dorsal and ventral sides of abdomen deep bright yellow with a narrow black band on the anterior margin of each segment. The appearance of the species is intermediate between eglanterina and hera, differing most conspicuously from these two in wing color. Primaries pale yellow faintly tinged with pink, but much less intense than in eglanterina. Secondaries brilliant yellow.

A new species of Bondarzewia (Russulales) from Indian Himalaya

Nova Hedwigia ◽  
2019 ◽  
Vol 109 (3) ◽  
pp. 441-456
Author(s):  
Upendra Singh ◽  
Manoj E. Hembrom ◽  
Rajendra P. Bhatt ◽  
Kanad Das
Keyword(s):  
New Species ◽  
Temperate Forest ◽  
Undescribed Species ◽  
Present Communication ◽  
Indian Himalaya ◽  
Pale Yellow ◽  
Northern India ◽  
A New Species ◽  
Uttarakhand Himalaya

Bondarzewia indohimalayana, a species collected from mixed temperate forest of Uttarakhand Himalaya in northern India, is proposed here as new to science. This mushroom is characterized by zonate pilei with different shades of brown, pale yellow margin with reddish tinge, irregular pores, thick context that turns pink to dark red with guaiacol, clavate to cylindrical basidia and narrow subconical to winged warts of basidiospores. The present communication deals with the morphological details and a combined (nrITS and nrLSU) phylogeny of this undescribed species. Its relation to allied (Asian and extralimital) species is discussed and a provisional key to the species of Bondarzewia is presented.

scholarly journals II. Chemical examination of the fluid from the peritoneal cavity of the nematode entozoa

1865 ◽  
Vol 14 ◽  
pp. 69-70 ◽  
Keyword(s):  
Peritoneal Cavity ◽  
Muscular Tissue ◽  
Chemical Examination ◽  
Yellow Colour ◽  
Pale Yellow ◽  
Pale Yellow Colour ◽  
Offensive Odour

Some time ago Dr. Cobbold sent me a quantity of fluid which he had extracted from about seventy perfectly fresh specimens of the Ascaris megalocephala of the horse, and he requested me to make an analysis of it. I most willingly availed myself of this unusual opportunity of ascertaining the composition of this fluid, the sample procured by Dr. Cobbold being fortunately large enough for the purpose. The analysis of this fluid is interesting as showing that its composition is similar to that of juice of flesh in the higher animals, and consequently that the process of assimilation occurs in these worms much in the same way as in those animals where the organs of digestion and circulation are perfectly developed. It also shows that a fluid similar to that existing in muscular tissue is apparently elaborated by the intestines of the Ascarides , while in the higher animals this fluid is formed from the blood. The fluid was turbid, of a pale yellow colour, and emitted an offensive odour, although not of decomposition.

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