Open Access. Powered by Scholars. Published by Universities.®

Plant Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

38,320 Full-Text Articles 55,175 Authors 11,031,478 Downloads 275 Institutions

All Articles in Plant Sciences

Faceted Search

38,320 full-text articles. Page 7 of 1055.

Effect Of Harvest Season On The Physical Properties, Fatty Acid Composition, And Volatile Compounds Of Roasted Cacao Beans, Amornrat Chumthong, Nuttarisa Limjumrern, Chutikarn Saensano, Pornthep Teerawattanapong, Aekkaraj Nualla-ong, Adirek Rugkong, Rawee Chiarawipa 2024 Program in Crop Production Technology, Faculty of Agricultural Technology, Songkhla Rajabhat University, Songkhla 90000, Thailand

Effect Of Harvest Season On The Physical Properties, Fatty Acid Composition, And Volatile Compounds Of Roasted Cacao Beans, Amornrat Chumthong, Nuttarisa Limjumrern, Chutikarn Saensano, Pornthep Teerawattanapong, Aekkaraj Nualla-Ong, Adirek Rugkong, Rawee Chiarawipa

Makara Journal of Science

The prevailing climate is an important factor affecting the development of the physical quality and flavor of cacao (Theobroma cacao L.) beans. The influence of harvest seasons on the physical, chemical, and flavor characteristics of cacao beans from Nakhon Si Thammarat Province, southern Thailand, was assessed. Among cacao beans, those harvested in the rainy season (R) had the highest fresh and dry weights and the lowest bean count per 100 g (87.00 ± 2.83). Although the overall fat content remained relatively constant across harvest seasons, cacao beans harvested in R exhibited a significantly higher fatty acid (C16:0, C18:1, and …


The Evolution And Development Of Awns In The Grass Subfamily Pooideae, Erin L. Patterson 2024 University of Massachusetts Amherst

The Evolution And Development Of Awns In The Grass Subfamily Pooideae, Erin L. Patterson

Doctoral Dissertations

This research focuses on a specific example of replicated evolution: the grass awn. Awns are typically extensions of the lemma, but may also appear on glumes or paleas. The lemma is a leaf-like organ on the exterior of the grass flower, the glumes are a pair of bracts subtending the basic unit of grass inflorescences, the spikelet, and the palea is the floral organ opposite the lemma. Awns are often described as "hair-" or "bristle-" like, but appear in many different shapes. Many awns are “twisted & geniculate", in which the awn has two sections, a lower twisted column, and …


Deep Learning Can Be Used To Classify And Segment Plant Cell Types In Xylem Tissue, Reem Al Dabagh, Benjamin Shin, Sean Wu, Fabien Scalzo, Helen Holmlund, Jessica Lee, Chris Ghim, Samuel Fitzgerald, Marinna Grijalva 2024 Pepperdine University

Deep Learning Can Be Used To Classify And Segment Plant Cell Types In Xylem Tissue, Reem Al Dabagh, Benjamin Shin, Sean Wu, Fabien Scalzo, Helen Holmlund, Jessica Lee, Chris Ghim, Samuel Fitzgerald, Marinna Grijalva

Seaver College Research And Scholarly Achievement Symposium

Studies of plant anatomical traits are essential for understanding plant physiological adaptations to stressful environments. For example, shrubs in the chaparral ecosystem of southern California have adapted various xylem anatomical traits that help them survive drought and freezing. Previous studies have shown that xylem conduits with a narrow diameter allows certain chaparral shrub species to survive temperatures as low as -12 C. Other studies have shown that increased cell wall thickness of fibers surrounding xylem vessels improves resistance to water stress-induced embolism formation. Historically, these studies on xylem anatomical traits have relied on hand measurements of cells in light micrographs, …


Flowering Of Spring-Planted Greens, Elizabeth Maynard, Marian M. Rodriguez-Soto, Rebecca Koetz 2024 Purdue University - Main Campus

Flowering Of Spring-Planted Greens, Elizabeth Maynard, Marian M. Rodriguez-Soto, Rebecca Koetz

Midwest Vegetable Trial Reports

Greens for salad or cooking are a significant part of the spring crop mix sold at Indiana farmers' markets. The harvest period for many spring-planted greens is shortened because they flower in response to environmental conditions. This paper reports on flowering response of two varieties of arugula, collards, mizuna, two types of mustard, and shungiku, planted in mid-April through May in northern Indiana.


Population Monitoring Of Beaver Mountain Groundsel, Autumn Gudmundsen, Loreen Allphin, Madison Huie, Steve Flinders 2024 Brigham Young University - Provo

Population Monitoring Of Beaver Mountain Groundsel, Autumn Gudmundsen, Loreen Allphin, Madison Huie, Steve Flinders

Library/Life Sciences Undergraduate Poster Competition 2024

2nd Place Poster Design

• Beaver Mountain groundsel, Packera castoreus, is a rare flowering plant, endemic to the Tushar Mountains of Utah (fig.1 & 2).

• P. castoreus has been classified as high priority for monitoring and conservation by the Utah Native Plant Society1.

• The plants in the Tushars are some of the least studied in Utah.

• There have been conservation concerns for rare alpine species recently due to increased threats. Threats to this species include:

• Grazing from large ungulates (mountain goats, deer, & elk)2

• Human impacts, especially hiking1

• Climate change1

• To better understand …


In Search Of Super-Scents For Carnivore Attraction, Megan Doxey 2024 Brigham Young University - Provo

In Search Of Super-Scents For Carnivore Attraction, Megan Doxey

Library/Life Sciences Undergraduate Poster Competition 2024

Find chemical scents that are more effective at alluring North American predators than what is commercially available, then isolate the scent’s chemical structure to create better trapping lures.


Exploring Soil Plant Relationships To Inform Seed Selection For Rangeland Restoration, Mallory Hinton, April Hulet, Matt Madsen, Raechel Hunsaker, Shannon Nelson 2024 Brigham Young University - Provo

Exploring Soil Plant Relationships To Inform Seed Selection For Rangeland Restoration, Mallory Hinton, April Hulet, Matt Madsen, Raechel Hunsaker, Shannon Nelson

Library/Life Sciences Undergraduate Poster Competition 2024

Seeding plants post disturbance on rangelands is a challenge due to unique ecological and environmental conditions such as:

• Limited water availability1

• Invasive species2

• Soil health3

• Native seed supplies4

One of the key factors to address these challenges and have a successful seeding is to understand the relationship between soil properties and the plants that grow within them.


Effects Of Grass Species And Soil Types On Early Successional Forb Species, Raechel Hunsaker, April Hulet, Matthew Madsen, Mallory Hinton, Derek Tilley 2024 Brigham Young University - Provo

Effects Of Grass Species And Soil Types On Early Successional Forb Species, Raechel Hunsaker, April Hulet, Matthew Madsen, Mallory Hinton, Derek Tilley

Library/Life Sciences Undergraduate Poster Competition 2024

Many early successional plant species have been considered weeds because of their lack of forage value for livestock (Whitson and Burrill, 2009). However, these early successional plant species have the potential to aid rangeland restoration in a variety of ways including:

• Food source for pollinators (Dumroese et al., 2016).

• Soil partitioning for climax communities of native perennials (Tilley et al., 2022).

• Competition against invasive annual species (Leger et al., 2014). To determine which early colonizing (or pioneer) species have the greatest restoration potential, interspecific competitive interactions should be evaluated.


Cattle Resource Selection On Late Fall Sagebrush Steppe Habitat In Idaho, United States, Larry Cole Kempton, April Hulet, Jim Sprinkle, Randy Larsen, Jameson Brennan, Dan Lauritzen, Sawyer Fonnesbeck, Justin Hatch 2024 Brigham Young University - Provo

Cattle Resource Selection On Late Fall Sagebrush Steppe Habitat In Idaho, United States, Larry Cole Kempton, April Hulet, Jim Sprinkle, Randy Larsen, Jameson Brennan, Dan Lauritzen, Sawyer Fonnesbeck, Justin Hatch

Library/Life Sciences Undergraduate Poster Competition 2024

Introduction Targeted cattle grazing is increasingly recognized as an effective method for controlling invasive grasses like cheatgrass in sagebrush-steppe ecosystems1. However, there's a lack of understanding about cattle distribution and their preference for invasives during the dormant season. One statistical model that provides insights into cattle distribution and the selection of resources (e.g., vegetation) is the Resource Selection Function (RSF) model2. Our research objective is to utilize a resource selection function to predict the probability of cattle selecting a particular location, in our case areas with higher cheatgrass abundance, based on environmental variables. The development of a resource selection function …


Silvopastoral Agroforestry In Upland And Lowland Uk Grassland: Tree Growth And Animal Performance, W R. Eason, R Lavender, R O. Clements, C Duller, E Gill, M Hislop 2024 Institute of Grassland and Environmental Research, UK

Silvopastoral Agroforestry In Upland And Lowland Uk Grassland: Tree Growth And Animal Performance, W R. Eason, R Lavender, R O. Clements, C Duller, E Gill, M Hislop

IGC Proceedings (1997-2023)

Trees, individually protected from herbivore damage using plastic shelters, were planted at two densities (100 and 400 stems/ha) into sheepgrazed pasture in upland and lowland UK grassland sites in 1988. Tree and animal performance were compared with conventional forestry (no sheep) and pasture (no tree) systems. Effects on tree growth and survival are highly species and site dependent although some treatment effects did emerge. Tree shelters encouraged rapid early height growth compared to forestry controls although in some cases tree form was also adversely affected. Generally tree performance within agroforestry treatments was better at the higher planting density. Eight years …


Use Of Annual Self-Reseeding Legumes In An Oak Forest In Central Italy, P Talamucci, G Argenti, A Pardini, S Piemontese, N Stagliano 2024 Universita di Firenze, Italy

Use Of Annual Self-Reseeding Legumes In An Oak Forest In Central Italy, P Talamucci, G Argenti, A Pardini, S Piemontese, N Stagliano

IGC Proceedings (1997-2023)

A trial has been carried out for three years in an oak coppice geometrically thinned out of Mediterranean Central Italy, about the functioning of a pastoral system made by four different resources: native pasture, subterranean clover (Trifolium brachycalycinum Katzn. et Morley) in pure stand, strips thinned out and firebreaks improved with oversown subclover, all grazed by sheep. Subclover increased the forage yield and improved the palatabilty of the pasture and the regularity of grazing; the higher biomass intake by animals reduced the quantity of dried biomass in summer and contributed to keep low either fire hazards or flame diffusion …


The Effects Of Shelterbelts On Adjacent Pastures And Soils In A Temperate Climate, A G. Gillingham, M F. Hawke 2024 AgResearch, Palmerston North

The Effects Of Shelterbelts On Adjacent Pastures And Soils In A Temperate Climate, A G. Gillingham, M F. Hawke

IGC Proceedings (1997-2023)

Two trials were conducted to differentiate the direct (exposure) from the indirect (modified soil fertility due to nutrient transfer by grazing animals) effects of farm shelterbelts on associated pasture growth.Soil from close to “unmanaged”shelterbelts with dense shelter to ground level had relatively high potassium (K) levels and, in a glasshouse situation, provided more pasture growth than soil from further distances, or from adjacent to “managed” shelterbelts. Pasture grown in boxes of a common soil implanted at increasing distances from a shelterbelt also produced highest growth rates close to shelter. These results generally explain the pattern of resident pasture growth, except …


Temperate Pasture And Sheep Performance Under Radiata Pine And In Open Pasture, K M. Pollock, R J. Lucas, D B. Pownall, S E. Thomson 2024 Lincoln University, NZ

Temperate Pasture And Sheep Performance Under Radiata Pine And In Open Pasture, K M. Pollock, R J. Lucas, D B. Pownall, S E. Thomson

IGC Proceedings (1997-2023)

Forage production from years 4 to 6 of an agroforestry system at 400-600 trees per ha and pasture alone were compared for a temperate sub-humid environment. Forage production was best for lucerne pasture followed by phalaris/clover and cocksfoot/clover, and least for ryegrass/clover and the ryegrass only pastures. Total pasture production in the agroforest relative to the open pasture was from 10% more for phalaris to 20% less for lucerne. Sheep carrying capacity over all pastures was 14.6 sheep/ha in the open and 11.8 sheep/ha in the agroforest and varied by ±15% according to the pasture types.


Grazing Management Of Tagasaste (Chamaecytisus Proliferus) For Sheep And Cattle Production In Southern Australia, N J. Edwards, G M. Allen, D M. McNeill, C M. Oldham 2024 The University of Western Australia

Grazing Management Of Tagasaste (Chamaecytisus Proliferus) For Sheep And Cattle Production In Southern Australia, N J. Edwards, G M. Allen, D M. Mcneill, C M. Oldham

IGC Proceedings (1997-2023)

Direct grazing of hedgerows of tagasaste (Chamaecytisus proliferus) by sheep or cattle appear to be very robust systems. Tagasaste persists under a continuous grazing regime with cattle such that plant regrowth maintained between 5 and 10 cm in length produces in excess of 215 kg of animal liveweight/ha/year. This level of production is also sustained within a rotational grazing regime. Under both grazing systems cattle production within a year is highly seasonal, with liveweight gains from young cattle peaking at 1.0-1.5 kg/head/day in winter and spring, but dropping to maintenance only by late summer-autumn. Sheep, like cattle, can …


Shrub Palatability To Rusa Deer (Cervus Timorensis Russa) In New Caledonia, C Corniaux, S Le Bel, J M. Sarrailh 2024 Centre de CoopÈration Internationale en Recherche Agronomique pour le DÈveloppement

Shrub Palatability To Rusa Deer (Cervus Timorensis Russa) In New Caledonia, C Corniaux, S Le Bel, J M. Sarrailh

IGC Proceedings (1997-2023)

The objective of this study was to determine a palatability scale of five shrub legumes to rusa deer during the dry season in New Caledonia. Acacia ampliceps and Samanea saman remain low in acceptability. Gliricidia sepium is more palatable but quite less than Leucaena leucocephala (native cultivar) and Calliandra calothyrsus (San Ramon). Therefore, since the regression of Leucaena leucocephala population, Calliandra calothyrsus could be very promising to replace it in the deer diet. On the other hand, Acacia ampliceps seems to be the most interesting shrub legume to plant in the west coast, where soil erosion, due to successive droughts …


Soil Nutrient Redistribution Pattern About The Tree In A Silvopastoral System, L C. Nwaigbo, H G. Miller, A R. Sibbald, G Hudson 2024 University of Aberdeen

Soil Nutrient Redistribution Pattern About The Tree In A Silvopastoral System, L C. Nwaigbo, H G. Miller, A R. Sibbald, G Hudson

IGC Proceedings (1997-2023)

The objective of this paper is to report the effect of animal-tree interactions on soil nutrient redistribution pattern in a grazed silvopastoral experiment site at Glensaugh, in NE Scotland. Scots pine (Pinus sylvestris L) tree species were planted in square lattice arrangements at 5 m x 5 m, spacing (400 stems/ha) on plots replicated over three blocks in Randomized Complete Block design on a predominantly rye grass (Lolium perenne L) pasture which was grazed by sheep yearly from April to October. Included in the design were grazed pasture plots without trees (Control). Soil samples were collected from around …


Trees For Shelter: The Implications In Agroforestry System, L C. Nwaigbo, A R. Sibbald, G Hudson 2024 University of Aberdeen

Trees For Shelter: The Implications In Agroforestry System, L C. Nwaigbo, A R. Sibbald, G Hudson

IGC Proceedings (1997-2023)

The objective of this study was to determine the horizontal and vertical variations in soil penetration resistance (PR) observed at tree-scale in silvopastoral plots that were grazed by sheep with and without trees. Sycamore trees (Acer pseudoplatanus L) were planted in the spring of 1988 at 10 m x 10 m spacing (100 stems/ha) at Glensaugh NE of Scotland on plots replicated over three blocks in Randomized Complete Block design on a predominantly rye grass (Lolium perenne L) pasture. Included in the design were pasture plots without trees (Control). The experiment is grazed by sheep yearly from April to …


A Silvopastoral System In The North Atlantic Zone Of Costa Rica: Combining Indigenous Timber Species With Dairy Pasture Swards, A Moulaert- Quiros, J P. Mueller, M Villarreal, R Piedra, L Villalobos 2024 North Carolina State University

A Silvopastoral System In The North Atlantic Zone Of Costa Rica: Combining Indigenous Timber Species With Dairy Pasture Swards, A Moulaert- Quiros, J P. Mueller, M Villarreal, R Piedra, L Villalobos

IGC Proceedings (1997-2023)

The objective of this study was to design, establish and monitor a silvo pastoral experiment on a dairy farm in the northern Atlantic region of Costa Rica. Indigenous timber species, Vochysia guatemalensis and Hyeronima alchorneoides were used together with or without the tropical pasture legume, Arachis pintoi in a split plot design with a 4 x 2 x 2 factorial arrangement. First year establishment was good for the tree component (2.3 to 10 % mortality) but poor for A. pintoi (4 to 5 % of sward). Poor legume establishment was attributed to lax grazing management and excess competition from existing …


Productivity Of Three Tree Legumes Grazed By Cattle, R C. Gutterridge 2024 The University of Queensland, Australia

Productivity Of Three Tree Legumes Grazed By Cattle, R C. Gutterridge

IGC Proceedings (1997-2023)

Three tree legumes Albizia chinensis, Leucaena leucocephala K 636 and Tipuana tipu were grown in conjunction with the grass Brachiaria decumbens and grazed by weaner cattle at a stocking rate of 2.5 animals per hectare for a total of 447 days. Albizia was best adapted to this acidic, poorly drained site in south east Queensland giving the highest yields of edible dry matter, high survival rate and moderate liveweight gains of 0.45 kg/head/day. The productivity of L. leucocephala K 636 was always poor but it gave the highest liveweight gains of all treatments in the first 280 days of grazing, …


Morphological And Physiological Response Of Planeleaf Willow (Salix Planifolia Pursh.) To Simulated Browsing, L Xu, J L. Dodd, M A. Smith, Q D. Skinner, W A. Laycock 2024 North Dakota State University--Fargo

Morphological And Physiological Response Of Planeleaf Willow (Salix Planifolia Pursh.) To Simulated Browsing, L Xu, J L. Dodd, M A. Smith, Q D. Skinner, W A. Laycock

IGC Proceedings (1997-2023)

Morphological and physiological responses of planeleaf willow (Salix planefolia Pursh.) to simulated browsing were studied under controlled conditions. The treatments consisted of every combination of three clipping intensities (30%, 60% and 90% of current twigs length removal) and three clipping timings (late winter, early spring and mid-summer). Increased clipping intensity stimulated bud activation; increased total leaf area and leaf size and increased the length of current year’s twigs. Mid-summer browsing increased the total number of leaves, the number of current twigs and decreased the length of current twigs. Higher browsing intensity resulted in higher photosynthetic rate of recently matured …


Digital Commons powered by bepress