Dwarfism does not modify mean area per leaf and light interception in indeterminate autumn-sown white lupin

SUMMARYThe effect of dwarfism on leaf number and size was investigated on six pairs of tall and dwarf nearisogenic lines of indeterminate autumn-sown white lupins (Lupinus albus L.). Dwarfism reduced mainstem height by 41% and first-order branch length by 22%. It also slightly decreased the number of leaves on the mainstem and first-order branches without affecting the time of flowering. Leaf size was not reduced. Logistic equations were used to analyse differences in the patterns of light interception by leaf canopies relative to thermal time from sowing during the growth of seven dwarf lines and three tall cultivars sown on different dates. The genotypes studied had long periods of low light interception during their early growth. No differences were found between most of the equation parameters for dwarf and tall genotypes. Only the proportion of light intercepted at flowering differed and this was explained by differences in flowering time. The dwarf character did not limit the ability of the crop canopies to intercept light. It is concluded that the character can be introduced into a wide range of genetic backgrounds without deleterious effects.

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White Lupin (Lupinus albus L. cv. Amiga) Increases Solubility of Minjingu Phosphate Rock, Phosphorus Balances and Maize Yields in Njoro Kenya

Sustainable Agriculture Research ◽

10.5539/sar.v3n3p37 ◽

2014 ◽

Vol 3 (3) ◽

pp. 37 ◽

Cited By ~ 3

Author(s):

Joyce J. Lelei ◽

Richard N. Onwonga

Keyword(s):

Grain Yield ◽

Phosphate Rock ◽

Block Design ◽

Lupinus Albus ◽

Farming Systems ◽

White Lupin ◽

Wide Range ◽

Maize Yields ◽

Lupinus Albus L ◽

Minjingu Phosphate Rock

Exudation of high amounts of citrate in white lupin (Lupinus albus L. cv. Amiga) has the advantage of being effective in mobilization of a wide range of sparingly soluble P sources. To improve cultivation system of maize, a field experiment was conducted to assess effectiveness of white lupin (Lupinus albus L. cv. Amiga) in increasing solubility of minjingu phosphate rock (MPR), phosphorus balances and maize yields in Njoro sub-County, Kenya. The randomized complete block design experiment was conducted for four seasons; short (October – February) and long rain seasons (March-September) of 2010 and 2011. The treatments were; (i) fallow (F) – maize (M) rotation with triple superphosphate (TSP) applied (MTSP- F), (ii) fallow - maize rotation with MPR applied (MMPR –F), (iii) lupin (L) – maize rotation with MPR applied (MMPR- L) and (iv) maize/lupin intercrop with MPR applied (M/LMPR – F). Soil and plant P and maize grain yield were higher in M/LMPR – F (with additional lupin grain yield) and MTSP– F treatments. All treatments resulted in positive P balances at the end of two years with highest values in MTSP– F treatment and lowest in M/LMPR – F. Intercropping lupin with maize amid application of MPR is recommended for enhanced maize performance in the farming systems of resource poor farmers. Measurement of available soil nitrogen and comparison of lupin with other legumes in solubilizing MPR is recommended.

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Complete Genome Sequence of the plant pathogenic fungus Colletotrichum lupini.

Molecular Plant-Microbe Interactions ◽

10.1094/mpmi-07-21-0173-a ◽

2021 ◽

Author(s):

Riccardo Baroncelli ◽

Flora Pensec ◽

Daniele Da Lio ◽

Thaís Regina Boufleur ◽

Isabel Vicente ◽

...

Keyword(s):

Plant Pathogens ◽

Pathogenic Fungus ◽

Lupinus Albus ◽

Genome Structure ◽

White Lupin ◽

Sequencing Technologies ◽

Wide Range ◽

Protein Encoding ◽

Colletotrichum Lupini ◽

Encoding Genes

Colletotrichum is a fungal genus (Ascomycota, Sordariomycetes, Glomerellaceae) that includes many economically important plant pathogens that cause devastating diseases of a wide range of plants. In this work, using a combination of long and short-read sequencing technologies, we sequenced the genome of Colletotrichum lupini RB221, isolated from white lupin (Lupinus albus) in France during a survey in 2014. The genome was assembled into eleven nuclear chromosomes and a mitochondrial genome with a total assembly size of 63.41Mb and 36.55 Kb, respectively. A total of 18324 protein encoding genes have been predicted, of which only 39 are specific to C. lupini. To the best of our knowledge this is the first genome of this species to be fully sequenced and to get publicly released. This resource will provide insight into pathogenicity factors and will help to get a better understanding of the evolution and genome structure of this important plant pathogen.

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Comparative biological characteristic of white lupin (Lupinus albus L.) varieties

Genetika ◽

10.2298/gensr1901275k ◽

2019 ◽

Vol 51 (1) ◽

pp. 275-285

Author(s):

Valentin Kosev ◽

Viliana Vasileva

Keyword(s):

Plant Height ◽

Lupinus Albus ◽

White Lupin ◽

Strong Positive Correlation ◽

Root Mass ◽

Forage Crops ◽

Number Of Leaves ◽

Number Of Seeds ◽

Lupinus Albus L ◽

Fresh Root

The study was conducted in 2014-2016 on the experimental field of the Institute of Forage Crops, Pleven, Bulgaria. Aboveground and root biomass plant material of seven white lupin (Lupinus albus L.) varieties different originated was analyzed in two phenological stages. Plants were analyzed for height, fresh weight, number of leaves, nodule number and nodule weight in the beginning of flowering stage, and for number of pods, number of seeds and seed weight in the technical maturity stage. Degree of earliness of varieties was assessing as well. The group of ultra early varieties can be defined PI533704 and Zuter varieties with coefficient of earliness 1.00, to early - PI368911, PI457938 and KALI (coefficient of earliness 1.25), and to late Lucky801 and PI457923 (coefficient of earliness >1.66). A strong positive correlation was found between the seed productivity with number of seeds per plant (r=0.943) and plant height (r=0.765); close relationship of fresh aboveground mass weight with plant height (r=0.822), number of leaves (r=0.965) and fresh root mass weight (r=0.876). The varieties of interest for breeding were selected by different signs. It was concluded that the number and weight of nodules as well fresh root mass weight can be used as selection criteria for creating varieties with a higher symbiotic nitrogen fixation potential.

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Quantitative Control of Early Flowering in White Lupin (Lupinus albus L.)

International Journal of Molecular Sciences ◽

10.3390/ijms22083856 ◽

2021 ◽

Vol 22 (8) ◽

pp. 3856

Author(s):

Sandra Rychel-Bielska ◽

Anna Surma ◽

Wojciech Bielski ◽

Bartosz Kozak ◽

Renata Galek ◽

...

Keyword(s):

Flowering Time ◽

Association Studies ◽

Lupinus Albus ◽

Genotypic Diversity ◽

Early Flowering ◽

White Lupin ◽

Genome Wide Association Studies ◽

Interacting Protein ◽

Major Qtls ◽

Lupinus Albus L

White lupin (Lupinus albus L.) is a pulse annual plant cultivated from the tropics to temperate regions for its high-protein grain as well as a cover crop or green manure. Wild populations are typically late flowering and have high vernalization requirements. Nevertheless, some early flowering and thermoneutral accessions were found in the Mediterranean basin. Recently, quantitative trait loci (QTLs) explaining flowering time variance were identified in bi-parental population mapping, however, phenotypic and genotypic diversity in the world collection has not been addressed yet. In this study, a diverse set of white lupin accessions (n = 160) was phenotyped for time to flowering in a controlled environment and genotyped with PCR-based markers (n = 50) tagging major QTLs and selected homologs of photoperiod and vernalization pathway genes. This survey highlighted quantitative control of flowering time in white lupin, providing statistically significant associations for all major QTLs and numerous regulatory genes, including white lupin homologs of CONSTANS, FLOWERING LOCUS T, FY, MOTHER OF FT AND TFL1, PHYTOCHROME INTERACTING FACTOR 4, SKI-INTERACTING PROTEIN 1, and VERNALIZATION INDEPENDENCE 3. This revealed the complexity of flowering control in white lupin, dispersed among numerous loci localized on several chromosomes, provided economic justification for future genome-wide association studies or genomic selection rather than relying on simple marker-assisted selection.

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Critical examination of various approaches used for analysing helical cables

The Journal of Strain Analysis for Engineering Design ◽

10.1243/03093247v291043 ◽

1994 ◽

Vol 29 (1) ◽

pp. 43-55 ◽

Cited By ~ 28

Author(s):

M Raoof ◽

I Kraincanic

Keyword(s):

Large Diameter ◽

Numerical Results ◽

Hertzian Contact ◽

Critical Examination ◽

First Order ◽

Wide Range ◽

End Conditions ◽

Parametric Studies ◽

The Individual ◽

Fixed End

Using theoretical parametric studies covering a wide range of cable (and wire) diameters and lay angles, the range of validity of various approaches used for analysing helical cables are critically examined. Numerical results strongly suggest that for multi-layered steel strands with small wire/cable diameter ratios, the bending and torsional stiffnesses of the individual wires may safely be ignored when calculating the 2 × 2 matrix for strand axial/torsional stiffnesses. However, such bending and torsional wire stiffnesses are shown to be first order parameters in analysing the overall axial and torsional stiffnesses of, say, seven wire stands, especially under free-fixed end conditions with respect to torsional movements. Interwire contact deformations are shown to be of great importance in evaluating the axial and torsional stiffnesses of large diameter multi-layered steel strands. Their importance diminishes as the number of wires associated with smaller diameter cables decreases. Using a modified version of a previously reported theoretical model for analysing multilayered instrumentation cables, the importance of allowing for the influence of contact deformations in compliant layers on cable overall characteristics such as axial or torsional stiffnesses is demonstrated by theoretical numerical results. In particular, non-Hertzian contact formulations are used to obtain the interlayer compliances in instrumentation cables in preference to a previously reported model employing Hertzian theory with its associated limitations.

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The Effect of Pruning and Several Kinds of Growing Media Fertigation Hydroponic Systems Against Protection and Production of Melons (Cucumis Melo L.)

Nabatia ◽

10.21070/nabatia.v4i2.578 ◽

2016 ◽

Vol 4 (2) ◽

pp. 57-63

Author(s):

M Abror ◽

M Koko Ardiansyah

Keyword(s):

Plant Height ◽

Cucumis Melo ◽

Fruit Weight ◽

Growth And Yield ◽

Leaf Number ◽

Growing Media ◽

Hydroponic System ◽

Wide Range ◽

Number Of Leaves ◽

Cucumis Melo L

This study aims to determine the effect of trimming with a wide variety of growing media hydroponic system fertigation on growth and yield of melon. Research will be conducted in the green house (House of plastic) UMSIDA Agriculture Faculty, Campus 2, Gelam, Candi, Sidoarjo, research time between the months of March to June 2016 using analysis of variance and continued test HSD 5%. The variables measured were plant height, leaf number, level of sweetness of fruit, fruit weight, high-fruit, thickness of the flesh of the fruit, conclusion from this research is going on the effect of trimming and a wide variety of growing media hydroponic system fertigation in treatment PM5 (trimming down, kokopit). There was also a real influence on the treatment PM6 (without pruning, kokopit) .In observation of plant height, leaf number, fruit weight, and high fruit. And also happens to influence a wide range of growing media on growth and yield of melon on hydroponics fertigation system, the PM6 treatment (without pruning, kokopit) had the highest rates in the observation of plant height, weight of the fruit, and the number of leaves.

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Tolerance of apple rootstocks to short-term waterlogging

Ciência Rural ◽

10.1590/0103-8478cr20170940 ◽

2018 ◽

Vol 48 (9) ◽

Cited By ~ 3

Author(s):

Lucas De Ross Marchioretto ◽

Andrea De Rossi ◽

Leonardo Oliboni do Amaral ◽

Ana Maria Alves de Souza Ribeiro

Keyword(s):

Adventitious Roots ◽

Dry Matter ◽

Defense Mechanism ◽

Leaf Size ◽

Lateral Branch ◽

Apple Rootstocks ◽

Short Term ◽

Waterlogged Condition ◽

Branch Angle ◽

Number Of Leaves

ABSTRACT: Until few years ago there were limited options of apple rootstocks commercially available for Brazilian growers; although, new series of Geneva® rootstocks introduced recently present desirable features such as vigor control and wider lateral branch angle. On the main apple producing regions of Brazil, intermittent rainfall eventually occurs and waterlogged condition is frequent especially in high clay oxisols; in addition, little is known about the tolerance of rootstocks M.9, Marubakaido/M.9 interstock, G.202, G.213 and G.814 to waterlogging. Thus, the objective of this experiment was to evaluate the tolerance of these rootstocks to short-term waterlogging on root and aerial parameters. Potted ‘Maxi Gala’ apple plants were kept under 48 hours of waterlogging weekly throughout 19 weeks to be compared with a normal hydric condition control. The evaluated variables were: leaf, stem and root dry matter, number and length of new root emission, and number of leaves, mean leaf size and chlorophyll content. Rootstocks G.202, G.814 and Marubakaido/M.9 interstock presented more tolerance to waterlogging, and the main defense mechanism was the emission of new adventitious roots.

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First-order autoregressive gamma sequences and point processes

Advances in Applied Probability ◽

10.2307/1426429 ◽

1980 ◽

Vol 12 (3) ◽

pp. 727-745 ◽

Cited By ~ 196

Author(s):

D. P. Gaver ◽

P. A. W. Lewis

Keyword(s):

Parameter Estimation ◽

Point Processes ◽

Random Variables ◽

Innovation Process ◽

Sums Of Random Variables ◽

First Order ◽

Wide Range ◽

Serial Correlations ◽

Generating Sequences ◽

Stieltjes Transforms

It is shown that there is an innovation process {∊n} such that the sequence of random variables {Xn} generated by the linear, additive first-order autoregressive scheme Xn = pXn-1 + ∊n are marginally distributed as gamma (λ, k) variables if 0 ≦p ≦ 1. This first-order autoregressive gamma sequence is useful for modelling a wide range of observed phenomena. Properties of sums of random variables from this process are studied, as well as Laplace-Stieltjes transforms of adjacent variables and joint moments of variables with different separations. The process is not time-reversible and has a zero-defect which makes parameter estimation straightforward. Other positive-valued variables generated by the first-order autoregressive scheme are studied, as well as extensions of the scheme for generating sequences with given marginal distributions and negative serial correlations.

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First-order autoregressive gamma sequences and point processes

Advances in Applied Probability ◽

10.1017/s0001867800035473 ◽

1980 ◽

Vol 12 (03) ◽

pp. 727-745 ◽

Cited By ~ 35

Author(s):

D. P. Gaver ◽

P. A. W. Lewis

Keyword(s):

Parameter Estimation ◽

Point Processes ◽

Random Variables ◽

Innovation Process ◽

Sums Of Random Variables ◽

First Order ◽

Wide Range ◽

Serial Correlations ◽

Generating Sequences ◽

Stieltjes Transforms

It is shown that there is an innovation process {∊ n } such that the sequence of random variables {X n } generated by the linear, additive first-order autoregressive scheme X n = pXn-1 + ∊ n are marginally distributed as gamma (λ, k) variables if 0 ≦p ≦ 1. This first-order autoregressive gamma sequence is useful for modelling a wide range of observed phenomena. Properties of sums of random variables from this process are studied, as well as Laplace-Stieltjes transforms of adjacent variables and joint moments of variables with different separations. The process is not time-reversible and has a zero-defect which makes parameter estimation straightforward. Other positive-valued variables generated by the first-order autoregressive scheme are studied, as well as extensions of the scheme for generating sequences with given marginal distributions and negative serial correlations.

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