The morphological and anatomical variability of the stems of an industrial hemp collection and the properties of its fibres

Amarasinghe, Prabha; Pierre, Camille; Moussavi, Mahta; Geremew, Addisie; Woldesenbet, Selamawit; Weerasooriya, Aruna

doi:10.1016/j.heliyon.2022.e09276

Cited by 11 publications

(3 citation statements)

References 80 publications

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“…To simulate hemp pollen dispersal for each county in the CONUS, we release particles from a point source at a height of h 0 = 2 m. Hemp height can vary between 1-5 meters, depending on its type and growing conditions 40,41 . A study examining hemp morphology found the mean height of 16 genotypes in the 1-2 m range 42 . We used a settling velocity of v s = 0.027 m/s, based on a typical hemp pollen diameter of 30 µm 5, 41 , using Stokes' law.…”

Section: Methodsmentioning

confidence: 99%

Hemp pollen dispersal across the United States

Nimmala,

Ross,

Foroutan

2024

Preprint

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For the recently legalized US hemp industry (Cannabis sativa), cross-pollination between neighboring fields has become a significant challenge, leading to contaminated seeds, reduced oil yields, and in some cases, mandated crop destruction. As a step towards assessing hemp cross-pollination risk, this study characterizes the seasonal and spatial patterns in windborne hemp pollen dispersal spanning the conterminous United States (CONUS). By leveraging meteorological data obtained through mesoscale model simulations, we have driven Lagrangian Stochastic models to simulate wind-borne hemp pollen dispersion across CONUS on a county-by-county basis for five months from July to November, encompassing the potential flowering season for industrial hemp. Our findings reveal that pollen deposition rates escalate from summer to autumn due to the reduction in convective activity during daytime and the increase in wind shear at night as the season progresses. We find diurnal variations in pollen dispersion: nighttime conditions favor deposition in proximity to the source, while daytime conditions facilitate broader dispersal albeit with reduced deposition rates. These shifting weather patterns give rise to specific regions of CONUS more vulnerable to hemp cross-pollination.

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Section: Methodsmentioning

confidence: 99%

Hemp pollen dispersal across the United States

Nimmala,

Ross,

Foroutan

2024

Preprint

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“…In this sense, it is necessary to know and expand the synergy of the main textile materials of natural origin, which can be reused or applied for the manufacture of innovative products, aiming at increasing the life cycle, the loss of waste, and economic development and applications of the circular economy [26]. Fibrous plants have gained importance in the face of the development of bioeconomy, green economy, and global economy due to the pro-ecological character of the value chains of bast fibers (lignocellulosic), as well as the growing preference for natural raw materials, in view of the demand for the manufacture of bioproducts (figure 2) [27,28]. They work together to care for fresh air, clean water, healthy soil, and biodiversity as well as more durable products that can be repaired, recycled, and reused [29].…”

Section: Classification and Plant Fibers Growth In Recent Yearsmentioning

confidence: 99%

Towards sustainable and ecofriendly polymer composite materials from bast fibers: a systematic review

Santos,

Aquino

et al. 2024

Eng. Res. Express

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This systematic review focuses on the exploration and advancement of sustainable and eco-friendly polymer composite materials derived from bast fibers. Bast fibers, obtained from the phloem of certain plants like flax, hemp, jute, and kenaf, represent a renewable and environmentally benign resource. Their integration into polymer based composites has gained significant attention due to the growing environmental concerns and the need for sustainable material development. The importance of this study lies in its comprehensive examination of bast fibers as viable alternatives to the synthetic fibers in polymer composite materials. By harnessing the natural strength, light weight, and biodegradability of bast fibers, this review contributes to the creation of materials that are not only environmentally sustainable but also possess enhanced mechanical properties suitable for various industrial and domestic applications.

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“…Our initial study involved the cultivation of over 100 accessions sourced from various regions across the United States. Following a thorough evaluation, we identi ed and selected cultivars that demonstrated optimal performance within the unique climatic conditions of Texas 21 .…”

Section: Introductionmentioning

confidence: 99%

Microbiome Diversity and Variations in Industrial Hemp Genotypes

Ahmad,

Coffman,

Ray

et al. 2024

Preprint

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Microorganisms like bacteria and fungi are crucial for host medicinal plant growth and development. However, environmental factors and host genotypes can influence microbiome composition and diversity in plants such as industrial hemp (Cannabis sativa L.), which can help us understand how they cope with climatic stresses and pathogenic attacks. We evaluated the endophytic and rhizosphere microbial communities of two cannabidiol (CBD; Sweet Sensi and Cherry Wine) and two fibers (American Victory and Unknown). The four hemp varieties showed significant variation in microbiome diversity. The roots had significantly abundant fungal and bacterial endophyte diversity indices, whereas the stem had higher fungal than bacterial diversity. Interestingly, the soil system showed no significant diversity variation across CBD vs. fiber genotypes. In fungal phyla, Ascomycota, Basidiomycota, and Mucuromycota were significantly more abundant in root and stem than leaves in CBD-rich genotypes compared to fiber-rich genotypes. The highly abundant bacterial phyla were Proteobacteria, Acidobacteria, and Actinobacteria. We found 16 and 11 core-microbiome bacterial and fungal species across genotypes, respectively. Sphingomonas, Pseudomonas, and Bacillus were the core bacterial microbiome of fiber genotypes with high abundance compared to CBD genotypes. Contrarily, Microbacterium, and Rhizobium were significantly higher in CBD than fiber. The Alternaria and Gibberella formed core-fungal microbiome of fiber-genotype than CBD. Contrarily, Penicillium, and Nigrospora were significantly more abundant in CBD than fiber genotypes. In conclusion, specific hemp genotypes recruit specialized microbial communities. Utilizing the core-microbiome species can help to maintain and improve the growth of hemp plants and to target specialized traits of the genotype.

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The morphological and anatomical variability of the stems of an industrial hemp collection and the properties of its fibres

Cited by 11 publications

References 80 publications

Hemp pollen dispersal across the United States

Hemp pollen dispersal across the United States

Towards sustainable and ecofriendly polymer composite materials from bast fibers: a systematic review

Microbiome Diversity and Variations in Industrial Hemp Genotypes

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