Showing papers in "Australian Journal of Biological Sciences in 1956"
TL;DR: In this paper, a detailed examination of combining ability in relation to diallel crossing systems is made, and eight different analyses are presented, with two alternative assumptions with regard to the sampling nature of the experimental material.
Abstract: A detailed examination of the concept of combining ability in relation to diallel crossing systems is made. Eight different analyses aro presented. 'l'hese result from a consideration of four different diallel crossing systems together wit.h two alternative assumptions with regard to the sampling nature of tho experimental material. A numerical example is given.
3,856 citations
TL;DR: Pha/a1'is roau/c8CeJ18 Des!'. is a completely Relf-incompatible, diploid, perennial gmss, which could be clone successfully only in plants induced to Hower early by eXJlosure to 100tg day treatment.
Abstract: Pha/a1'is roau/c8CeJ18 Des!'. is a completely Relf-incompatible, diploid, perennial gmss. incompatible pollen gmins germinate normally but the pollen tubes fail to penetrate far into tho 8Lyle. The ineompatibility interrelationships of parents and progenios were dotermined by olmen-ing the pollen tubes and pollen grains after pollination. This eould be clone successfully only in plants induced to Hower early by eXJlosure to 100tg day treatment. Incompatibility is controlled by two loci, each with a series of multiple alleles. The loci are probably not linked but the data would not. allow detection of loose linlmge. Pollen determination is gametophytic, and the genes aet indepoudelltly in the style. 'eho rolationship of this incompatihility system to previously described systems is eonsid(lred, and theoretically possible incompatihility systems based on genetical eOlltrol nt. two loci are suggested.
119 citations
TL;DR: A histological study has been mado of wool folliclos in skin from the trunk of 24 shcep foetuses ranging in age from (J)) to 145 days of gestation, and the remainder are believed to be wholly or predominantly Merino.
Abstract: A histological study has been mado of wool folliclos in skin from the trunk of 24 shcep foetuses ranging in age from (J)) to 145 days of gestation. Fifteen of t.hese foetuses are known to be entirely Merino in origin, and the remainder are believed to be wholly or predominantly Merino. Extensive use has berm mado of serial sections parallel to the axis of the wool follicles as well as those parallel to [,he skin snrfaco. Skin from ]\lorino lambs and adults has also boen examined.
110 citations
TL;DR: Oxidation of manganolls sulphate by an associa,t,ion of two bacteria and by a newly-isolated strain of a Gorynebactc'rium sp.
Abstract: Oxidation of manganolls sulphate by an associa,t,ion of two bacteria and by a newly-isolated strain of a Gorynebactc'rium sp. was studiod in an artificial medium containing 0-005 per eont. yeast extraot, 0·005 per COIlt. manganous sulphate, and various other ino['ganic salts.
79 citations
TL;DR: In this article, the free amino acid fraction of tomato plants grown in full nutrient and in cultures doficiollt ill zinc, copper, nlallganeso, iron and molybdenum have been evaluated.
Abstract: The lovel and the qllHnj~itat,jve compositien of the free amino acid fraction of tomato plants grown in full nutrient and in cultures doficiollt ill zinc, copper, nlallganeso, iron. and molybdenum have beon cletormiuecl. 'I'he methods used in the investigation inelude the quantitative estimation of amino aeids by a technique involving paper chromatogl'l1phy, and the cultm'o of tomato plants in highly purified n utriollt solutions.
69 citations
TL;DR: Rome anatomical, digestivc, and mctaholic features of Setonix brachyuru8 (;)noy & Caimard, the Hottnest Island wallaby or "quoklw", have be on invest,igated.
Abstract: Rome anatomical, digestivc, and mctaholic features of Setonix brachyuru8 (;)noy & Caimard, the Hottnest Island wallaby or "quoklw", have be on invest,igated. Setonii:c is a small maeropod mal'Rnpial weighing 2-5 kg.
66 citations
TL;DR: High yield of om:ymo lmve bcon investigated and details am givo!l of U relatively simple bulk-culture apparatus are investigated and high yield extracellular eellnlase is produced which is probnbly adaptive.
Abstract: Stachyl!atrys a/I'll. grows well on u vV"ksman-Cm'ey medium containing collt!loso as thc sol" eUl'bon source; au extracellular eellnlase is produced which is probnbly adaptive. 'I'ho cOlldit,iollS eoudne;vo to it high yield of om:ymo lmve bcon investigated and details am givo!l of U relatively simple bulk-culture apparatus.
41 citations
TL;DR: In this paper, the root systems of A. hasia exhibit considerably higher chloride (mntents on a dry matter basis than the mature leaves) than those of either A. vesicaria or tomato plants.
Abstract: A/riplex hasia/a is taken as an example of a halophytie member of the genus. As a seedling it is shown to be tolerant to NaGI concentrations !tpproximating that of sea· water (O·tiiVI). Growth, however, is severely inhibited in concentrations above O·aM. For comparable cOllcentmtions, the chloride cOlltellts of the mature leaves are lower than those of either A. vesicaria or tomato plants. The root systems of A. has/a/a exhibit considerably higher chloride (mntents on a dry matter basis than the mature leaves. The total of the mature leaf cations analysed greatly exceeded the total of the inorganic anions. This condition is shown to agree with what would be expeeted, assuming a simple Donnan equilibrium existed between the mature leaves and the external eulture solution, where the concentration of the latter is 0'2M: or above.
41 citations
TL;DR: Leucoanthocyallins in plant tissues have been estimated by measuring the nnthocyanidins produced after hoating with i8opropanol-hydroehloric acid in it closo(1 tuhe.
Abstract: Leucoanthocyallins ill plant tissues have been estimated by moasuring tho nnthocyanidins produced after hoating with i8opropanol-hydroehloric acid in it closo(1 tuhe. Various tiSSllOS of fiJucalYT!tu8 sicberiarla F. Muoll., E. obZiqua I,'Horit., E. regnan8 F. Muol!., and Ii). maculata Hoole were studied by this method. The amonnt of loucoanthoeyanills was observed to decrease with increasing degree of maturity of tho dif'fel'Ollt leaves on a stem. il
38 citations
TL;DR: In this paper, embryos of monocotyledons 11m] dicot,ylodolls, oxcisod from young developing ovuLes were growll ill a "sittiug drop" culture.
Abstract: Subsequent to oarlier work 011 Oal)seUa. bWI'8a..pl1slol'is (L.) ]\;Joeneh. embryos of' nino plallt fmnilies, monocotyledons 11m] dicot,ylodolls, oxcisod from young developing ovuLes were growll ill a "sittiug drop" culture.
31 citations
TL;DR: In this article, an intaet plant was arranged so that the top and the bottom of the plant were sealed in sopamto flasks, and a diffusion gradient was established.
Abstract: An intaet plant, was arranged so Lhat Llle top and rools W"t'O sealod in sopamto flasks. In oaeh flask tho vapour pressllre was mainta.ittod at a prodotormined len,1 so thai, a diffusion gradieni". favouring wat"r mo\'omont "iCher 1'1'0111 roots to tOJl or from top to roots was established.
TL;DR: In this article, the effect of auxins and auxin analogues on the basipetal transport of illdole-3-aeotie acid (IAA) in 5-mm segments of hypocotyls of i)-day-old etiolated Phaseolus vulgari8 L. seedlings was investigated.
Abstract: The effect of a number of auxins and auxin analogues on the basipetal transport of illdole-3-aeotie acid (IAA) in 5-mm segments of hypocotyls of i)-day-old etiolated Phaseolus vulgari8 L. seedlings has been investigated.
TL;DR: The histological natUl'e of resistance of barley seedlings to infection hy EI'!l8illhe rrl'wninis val'.
Abstract: The histological natUl'e of resistance of barley seedlings to infection hy EI'!l8illhe rrl'wninis val'. hOl'de'i is woll understood. Infootion b~' this obligato pal'asito causos marked bioehemical changes in the hosL These changos al'e expressed in an increased l'ospimtory rate. The pattei'll of l'oHpirator,Y ehallgo is differont. and typical for tho varietal typos tested and may be correlated with the ebsorvecl histological changes. This inoreasod respimtion may woll he duo to t.he formatioll, oit.hor by t.ho pathogen or by tho host pathogen oombination, of an agellL which uncouples diroetly 01' indirectly the coneomitant phosphorylations normally limiting tho l'cRpiratory rate.
TL;DR: A "Celloplmne" bug teelmique is described whieh onahlps some dwmi "HI intol'aetions betweell ol'ganisms to be studied 1:n situ.
Abstract: A "Celloplmne" bug teelmique is described whieh onahlps some dwmi"HI intol'aetions betweell ol'ganisms to be studied 1:n situ.
TL;DR: It was concluded that SOl'um provides a nOll-toxie SOllrce of olea!, prohably as n moleeulnr uRsociation with protein and cholosterol, lmC tho.
Abstract: For grow(,h or A.,yierococcl
TL;DR: As the larva matures to the prepupa, the greatest decreases occm in the concentrations in the blood of alanine, glutamic acid, glutamine, glycine, proline, and tyrosine.
Abstract: Blood from the larval, prepupal, and early pupal stages of Calliphora augttr' (F.) contains the same 18 free amino acids. In addition, hydroxyproline is present in larval and prepupal blood. The quantitative differenccs in the concent,ratiolls of these amino acids arc reported. Larval blood has the highest free amino acid content (6'6 mgjml) followcd by early pupal blood (4'6 mgjml) and prepnpal blood (3'3 mgjml). As the larva matures to the prepupa, the greatest decreases occm in the concentrations in the blood of alanine, glutamic acid, glutamine, glycine, proline, and tyrosine. The metabolic significance of these changes are discussed.
TL;DR: Explants of' skin from four sheep foetuses of different ages have been cultivated for periods of up to 38 clays in a medium of fowl plasma lind ehicken embryo extraet for development of wool follicles of difforent types.
Abstract: Explants of' skin from four sheep foetuses of difIerent ages have beell cultivated for periods of up t,o 38 clays in a medium of fowl plasma lind ehicken embryo extraet. 'I'he development of wool follicles of difforent types has beon st,uilied both in these living ()xplants and in serial sections from them.
TL;DR: The rate of ciigesl;iol1 of human blood wasigated at 4-hourly intorval by tho I'reeipitin and benzidine tests for mosquito species .
Abstract: The rate of ciigesl;iol1 of human blood was invcsLigated at 4-hourly intorval" by tho I'reeipitin and benzidine tests for tho mosquito species .Aedes aegypti, A. concolor, A. noto8oriptu8, A. soutellaris, and Culea., fllliymis. In an enviroWllent ill which temperature and humidity w('["o oonstant and in whioh thoro were equal periods of light and darkness, the mie of digestion ranged from :11 hI' for 8CUtellm'is to ·Hl hI' for A. COil color.
TL;DR: Thyroidectomy of the newborn lamb prevents the maturation of secondary wool follicles, but the administration of l-thyroxine to thyroidectomized lambs allows normal follicle development.
Abstract: Thyroidectomy of the newborn lamb prevents the maturation of secondary wool follicles. The administration of l-thyroxine to thyroidectomized lambs allows normal follicle development.
TL;DR: In this article, the morphology and propertios of a soil hacterium, (JorynPi)(lctcl'iwn sp., ahle to oxidize aliphatic hydl'ocm·bolls), are described.
Abstract: (1) A. description is given of the morphology and hiochomical propertios of a soil hacterium, (JorynPi)(lctcl'iwn sp., ahle to oxidize aliphatic hydl'ocm·bolls.
TL;DR: Previous experiments had shown that certain complex ions, whieh are co,ol'dinately saturated metal chelatcR lacking specifie gronps 01' centres, for mice aud inhibited acetyleholinestcrasc.
Abstract: Previous experiments had shown that certain complex ions, whieh are co,ol'dinately saturated metal chelatcR lacking specifie gronps 01' centres, wern for mice aud inhibited acetyleholinestcrasc. As these iOllS nre extremely stable, undergoing no ehange in living organisms, it would be expected that any such effec!' would be physical and not ehcmieal in nature.
TL;DR: Using standard thermodynamic data it is shown that the oxidation of glucose by nitrogen to give carben dioxide and ammonia is all ovel'a.
Abstract: Using standard thermodynamic data it is shown that tho oxidation of glucose by nitrogen to give carben dioxide and ammonia is all ovel'a.ll maction that involves a substantial evolution of heat and deel'easfl in ii'ee elH'rgy. 'I'his is not in a(lCOrdallce with literature statements that, biological nitrogen fixation is onrlothormie. In tho concluding section a Frost diagram is used to sun'oy the thcrrnodynamie data of oxidation l'C'adions related to nitrogen fixation.
TL;DR: A straight line relationship was found to hold, and the most useful range of amino aoid OOllcolltmtion was 2 5 mlYI although the mothod is usable in tho rango 1-"10 mlVl.
Abstract: A simple method for the quantitative analysis of amino [teids [n'eHent ill a protein hydrolysate, or in other mixtures of amino aeids, is deserihocl. The amino aeids are separated on one·dimensional paper chromatogmllls, fOUl" solvent syst;mns being used to resolvo 17 amino acids. The chromatogrums are treatm! with a suitable reagent; to detect the spots corresponding to each amino acid . .!Daeh chromatogram, {,ftcr being made somi·t,mllsparent with dimeth:vlphthalato, is scanned nutomnticnlly, with a densitometer, and the intensity of the light transmitted by the coloured spots is recorded on light-sensitive paper. A straight line relationship was found to hold, [or all amino acids, boi;wcell conccnh'ntioll and log per cent. transmission, Tho most useful range of amino aoid OOllcolltmtion was 2 5 mlYI although tho mothod is usable in tho rango 1-"10 mlVl. 'l'he method includes a nnmber of nOW tOclllli(juOS and tho HYOeage cooflicient of variation for a sillglo readillg for an an1ino n.eid is 5-7 pOl' COllt.
TL;DR: Single or successive regenerations of metathoraeie legs during the fifth instal' in Blattella ge1'lnanica L.H., show the samo time relations with moulting as previously described for the firs!
Abstract: Single or successive regenerations of metathoraeie legs during the fifth instal' in Blattella ge1'lnanica L. at 20°C, 70 pel' cent. R.H., show the samo time relations with moulting as previously described for the firs!; instal', and do not affoct the duration of development, number of moults, or othor cllfwacteristics of tho resulting adults.
TL;DR: A comparative summary is presented of new and published data on the inhibition of photosynthesis by high oxygen concentration to show the impact of atmospheric oxygen levels on photolysis.
Abstract: (i) A comparative summary is presented of new and published data on the inhibition of photosynthesis by high oxygen concentration.
TL;DR: Cross-protection tests support the hypothesis that Lhose are strains of one and the same virlls, and the results of erose-agglutination experim81lt show the strains of P.M.V. and B.Y.LII.
Abstract: Antisera were prepared to one strain of boan yellow mosaie virus (B.Y.lVLV.) and two strains of pea mosaie virus (P.i\LV. strain 1 and P.lII.V. sLraill 2). By utilizing the aggluLinatioll reaetiol1, the serological activit,y of both straills of P.lVLV. is clemollst,rated for the first timo. The results of erose-agglutination experim81lt,s show the strains of P.M. V. and B.Y.M.V. to be serologically related. Cross-protection tests support tho hypothesis that Lhose are strains of one and the same virlls.
TL;DR: The mitochondria of animal and etiolated plant tissues have been prepared from green pea leaves and contain the complete triearboxylic acid cycle, determined by demonstrating the oxidative and phosphorylative qualities of the partieles in the l.
Abstract: Cytoplasmie particles eOl'l'cspollding to i.he mitochondria of animal and etiolated plant tissues have been prepared from green pea leaves. These part.icles contain t,he complete triearboxylic a(1id cycle ('omplex of enzymes. This has been determined by demonstrating the oxidative and phosphorylative (mpacities of the partieles in the l)I'csence of added snbs/,rates of the trical'boxylie acid cycle, the "sparked" oxidation of pyruvate, the conversion of fumarate to succinate in the presence of malonate', and by the eomplete oxidation of added substrate. lI:nzymes eapable of oxidizing formate, laetate, a number of amino acid,;, Hnd reduced oytoehl'ome c aro looMed in these pnrticles. Diphosphopyridillo nueleotide, triphosphopyridine nucleotide, and sueeinate-linked eytochrome reductases are also present. Tho effeets of varions COf!lctOl's [md inhibitors on the oxidative capaeit.ies of the pm·tielns havo beon ill,-ostigated. Valuos hetwenll :l and :1 for tho ratio of phosphorus esterified to oxygen eOllsumoc! luwe been obtained i'0!' all Hw triem'boxylic acid cy,,]o substrates tested. with til(' exception of succinate, for whieh It value of I ,Ml was found.
TL;DR: The skin of Naked, Crinkled, and oeeasionally, normal mice, the mast cell granules, or whole mast cells, located in subdermal conneetive tissue, become pigmented, the colour the same as the colour of the hail' of the animal ill question.
Abstract: (i) In t.he skin of Naked, Crinkled, and oeeasionally, normal mice, the mast cell granules, or whole mast cells, located in subdermal conneetive tissue, become pigmented, the colour bcing the same as the colour of the hail' of the animal ill question.
TL;DR: Differences between mitochondria which showed simple Donnan charactoristics and those accumulating chloride ions aro described are described.
Abstract: Ionic relations of mitochondria from red beetroot tissue (Beta vulgaris L) sllsponded in various salt media were studied Under the conditions of the experiments the mitochondrial suspensions behaved us a two-phase system, one coni,aining immobile ions and showing Donnan effects Rome differences between mitochondria which showed simple Donnan charactoristics and those accumulating chloride ions aro described
TL;DR: A micromethod has been described foJ' Lbe estimation of small mnonnts of glycogen in the vagina and uterus of the mouse.
Abstract: (i) A micromethod has been described foJ' Lbe estimation of small mnonnts of glycogen in the vagina and uterus of the mouse.