scholarly journals Morphological and anatomical aspects of birdsfoot trefoil and big trefoil

2009 ◽  
Vol 38 (9) ◽  
pp. 1663-1667 ◽  
Author(s):  
Rita Poles Maroso ◽  
Cerci Maria Carneiro ◽  
Simone Meredith Scheffer-Basso ◽  
Daniela Favero
Keyword(s):  
Starch Content ◽  
Adventitious Shoots ◽  
Morphological Characteristics ◽  
Lotus Corniculatus ◽  
Birdsfoot Trefoil ◽  
Vascular Bundles ◽  
Cell Integrity ◽  
Anatomical Structures ◽  
Shoot System ◽  
Underground System

This study was carried out with the objective of describing the aerial and underground organs of birdsfoot trefoil [Lotus corniculatus (São Gabriel and ARS-2620 cultivars)] and big trefoil [Lotus uliginosus (Maku cultivar)]. The plants were cultivated in pots and harvested at 150 and 210 days after sowing. Stems, leaves and roots were prepared in according to conventional anatomical techniques. The anatomical structures of L. corniculatus and L. uliginosus differed in terms of pith cell integrity, starch content in the parenchyma root cell and underground stem cortex. The leaves were amphistomatic, with phenolic idioblasts, small vascular bundles and few conducting elements. The underground system was diffuse, with adventitious shoots that grew in two directions, had no cataphylls, emerged from the ground, and gave rise to aerial stems. The morphological characteristics of the shoot system of both species matched the recent descriptions of soboles.

Regeneration characteristics of birdsfoot trefoil (Lotus corniculatus L.) in low latitude environments in eastern Australia

2007 ◽  
Vol 47 (7) ◽  
pp. 833 ◽  
Author(s):  
J. F. Ayres ◽  
W. M. Kelman ◽  
L. A. Lane ◽  
B. E. McCorkell
Keyword(s):  
Seed Set ◽  
Seedling Recruitment ◽  
Morphological Characteristics ◽  
Lotus Corniculatus ◽  
Birdsfoot Trefoil ◽  
Low Latitude ◽  
Breeding Lines ◽  
South Wales ◽  
Eastern Australia ◽  
Perennial Legume

Birdsfoot trefoil (Lotus corniculatus L.) is a perennial pasture legume with adaptive characteristics and agronomic potential for permanent pastures in the high rainfall temperate zone in eastern Australia. Most birdsfoot trefoil cultivars have been developed for high latitude (>40° north or south) locations, and have long photoperiod (>16 h) requirements for flowering. However, at low latitude (28–32°S) in northern New South Wales (NSW), daylength (~14 h on the summer solstice) provides insufficient photoperiod to stimulate flowering and the level of seed-set needed for effective seedling recruitment. As a precursor to breeding, a study was undertaken to characterise a collection of birdsfoot trefoil populations from low latitude origins. Eight cultivars, two breeding lines and 38 accessions were assessed for flowering prolificacy, seed-set, morphological characteristics and seasonal herbage growth at two sites in northern NSW (Glen Innes 29°42′S, Armidale 30°31′S). None of the cultivars expressed reproductive processes with sufficient intensity to provide the level of seed-set necessary for regeneration. However, three accessions consistently flowered strongly at both sites and expressed desirable agronomic characteristics, and a further 10 accessions and the Australian germplasm BLVR5 flowered strongly at least at one of two sites. These populations provide a genetic base for future cultivar development, so that birdsfoot trefoil might become a perennial legume option for northern NSW and other low latitude regions.

scholarly journals Taxonomic relevance of petiole anatomical and micro-morphological characteristics of Clematis L. (Ranunculaceae) taxa from South Korea

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11669
Author(s):  
Beom Kyun Park ◽  
Dong Chan Son ◽  
Balkrishna Ghimire
Keyword(s):  
South Korea ◽  
Morphological Characteristics ◽  
Species Level ◽  
Species Discrimination ◽  
Vascular Bundles ◽  
Diagnostic Features ◽  
Anatomical Structures ◽  
Anatomical Features ◽  
Capitate Trichomes ◽  
Upgma Phenogram

We assessed the micro-morphological and anatomical structures of the petioles of 19 Clematis taxa from South Korea. The petiole surface features were observed with the help of stereomicroscopy and scanning electron microscopy, and the anatomical features are studied via microtomy and light microscopy. The results of this study showed that the presence/absence and abundance of trichomes, petiole cross-section outlines, upper surface wings and grooves, and the number of vascular bundles were useful for species discrimination in Clematis. Among the studied taxa, C. hexapetala was the only species with a glabrous petiole surface. Two types of trichomes were observed in the other 18 taxa: long, non-glandular and flagelliform trichomes and short, glandular capitate trichomes. We found four to six major vascular bundles and a maximum of eight interfascicular vascular bundles (C. heracleifolia and C. urticifolia) in the 19 taxa. A cluster analysis based on UPGMA identified six clusters with 18 nodes. Although the number of taxa investigated was limited, taxa from the sections Tubulosae, Viorna, and Astragene clustered with each other in the UPGMA phenogram due to the overall similarity of petiole features. Based on this observation, we can conclude that most of the petiole features are limited to the species level, and thus, the data obtained could be used as descriptive and/or diagnostic features for particular taxa, which may be useful for the investigation of problematic taxa in the genus.

PRIMING AS THE FACTOR OF INCREASE OF EFFICIENCY SEED PRODUCTION OF BIRDSFOOT TREFOIL

2020 ◽  
Author(s):  
Vladimir Zolotarev
Keyword(s):  
Seed Production ◽  
Characteristic Property ◽  
Seed Priming ◽  
Lotus Corniculatus ◽  
Birdsfoot Trefoil ◽  
Germination Energy ◽  
Field Germination

A characteristic property of legumes is the formation of hard-stone seeds. To use such seeds for sowing, it is necessary to carry out measures to increase their seeding indicators. The article provides an overview of methods of pre-sowing preparation of seeds, priming (Seed Priming). The harvest of Birdsfoot trefoil (Lotus corniculatus L.) can contain up to 90% or more hard-stone seeds. Mechanical priming of hard-stone seeds of Birdsfoot trefoil increases their germination energy and field germination.

SOD-SEEDING BIRDSFOOT TREFOIL IN ESTABLISHED ORCHARDGRASS WITH OVERALL OR BANDED HERBICIDES

1983 ◽  
Vol 63 (1) ◽  
pp. 267-276 ◽  
Author(s):  
R. L. NICHOLS ◽  
R. A. PETERS
Keyword(s):  
Dry Matter ◽  
Dactylis Glomerata ◽  
Lotus Corniculatus ◽  
Birdsfoot Trefoil ◽  
No Tillage ◽  
Botanical Composition ◽  
Stand Establishment ◽  
Matter Production ◽  
Herbicide Treatments ◽  
Dactylis Glomerata L

Birdsfoot trefoil (Lotus corniculatus L. ’Viking’) was seeded directly into a predominantly orchardgrass (Dactylis glomerata L.) sward following overall or banded applications of paraquat (1,1′-dimethyl-4, 4′-bipyridinium ion, as dichloride salt) or glyphosate [N-(phosphonomethyl)glycine, as isopropylamine salt] to determine the degree of sward control necessary for stand establishment without tillage. Effects of the herbicide treatments and the seeding on botanical composition and dry matter production were determined by a vertical intercept technique and by hand separations of harvests into botanical components. Trefoil establishment was proportional to the degree of sward control during the seeding year. Little trefoil was established by direct seeding without herbicides. The banded herbicide treatments were less effective than overall herbicide applications for trefoil establishment. Trefoil yield obtained following overall application of paraquat was approximately 65% of that obtained following overall glyphosate treatment.Key words: Dactylis glomerata, glyphosate, Lotus corniculatus, herbicide, no-tillage, paraquat

scholarly journals Adaptability and leaf anatomical features in oil palm seedlings produced by embryo rescue and pre-germinated seeds

2010 ◽  
Vol 22 (3) ◽  
pp. 209-215 ◽  
Author(s):  
Zanderluce G. Luis ◽  
Kadja Milena G. Bezerra ◽  
Jonny Everson Scherwinski-Pereira
Keyword(s):  
Oil Palm ◽  
Embryo Rescue ◽  
Morphological Characteristics ◽  
Growth Conditions ◽  
Epidermal Cells ◽  
In Vitro Cultivation ◽  
Vascular Bundles ◽  
Anatomical Plasticity ◽  
Germinated Seeds

Changes in the leaf structure of plants grown in different conditions have been reported, such as increase in size and density of stomata and reduction in stomatal control, amount of epicuticular wax, and mesophyll thickness, with a high diversity of intercellular spaces. However, these changes are highly variable depending on the physiological and morphological characteristics of each species. The objective of this work was to analyze the adaptability and anatomical plasticity of oil palm seedlings produced after embryo rescue and pre-germinated seeds. Expanded leaves were prepared for evaluation of morphometric data and anatomical structures. It was verified that the environmental conditions in vitro negatively influenced the stomata density, epidermal and hypodermal thickness, and the values for the expansion cells and leaf mesophile. Anatomically, the oil palm leaves present the same tissues composition in both growth conditions, with uniseriate epidermal cells, and tetracitic stomata occurring in both epidermal surfaces. Epidermal cells from in vitro plants are thinner than ones from greenhouse. The midrib of leaves from greenhouse plants are more developed and is composed by only one central vascular bundle, while plants from in vitro cultivation developed three to four collateral vascular bundles.

SELF-INCOMPATIBILITY AS AN OUTCROSSING MECHANISM IN BIRDSFOOT TREFOIL (LOTUS CORNICULATUS)

1966 ◽  
Vol 46 (4) ◽  
pp. 411-418 ◽  
Author(s):  
R. K. Miri ◽  
J. S. Bubar
Keyword(s):  
Genetic Markers ◽  
Lotus Corniculatus ◽  
Commercial Production ◽  
Birdsfoot Trefoil ◽  
Self Incompatibility ◽  
Compatible Pollen ◽  
Double Cross

Studies using pubescence and cyanogenesis as genetic markers indicate that a high proportion of self-seed is set when selfing is followed by pollinations with mixtures of self- and cross-pollen. Also, considerable selective fertilization occurs when pollination is with mixtures of compatible pollen. It is suggested that the incompatibility mechanism may be used for commercial production of "double-cross hybrids" of trefoil.

Bruce birdsfoot trefoil

2008 ◽  
Vol 88 (6) ◽  
pp. 1093-1094
Author(s):  
Y. A. Papadopoulos ◽  
K. B. McRae ◽  
D. Gehl ◽  
S. A. E. Fillmore
Keyword(s):  
Nova Scotia ◽  
Root Growth ◽  
Key Words ◽  
Lotus Corniculatus ◽  
Birdsfoot Trefoil ◽  
Mass Selection ◽  
Plant Vigour ◽  
Growth Vigour ◽  
Cultivar Description ◽  
Selection For

Bruce birdsfoot trefoil (Lotus corniculatus L.) is a 71-clone synthetic variety developed at the Nappan Research Farm, Agriculture and Agri-Food Canada, Nappan, Nova Scotia. Bruce was developed through two cycles of mass selection for plant vigour (top and root growth) and winterhardiness, and one cycle of mass selection for re-growth vigour under grazing. In Atlantic Canada, Bruce produced more forage than the check cultivar Leo during 3 post-seeding years. It was also superior in spring growth with high first-cut herbage yields. Key words: Birdsfoot trefoil, Lotus corniculatus, cultivar description

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