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seedlings, etc ; agriculture; mouth; porosity; rapeseed; soil; Show all 6 Subjects
Abstract:
... To address the problem whereby the size of the hole formed by the existing hole-forming device of hole-punching transplanters is significantly inconsistent with the theoretical size as it is impacted by the inserting and lifting methods, a scheme for eliminating the forward speed of the whole machine by the horizontal linear velocity of reverse rotation of the hole-forming mechanism is proposed to ...
Javier Hernández-Velasco; José Ciro Hernández-Díaz; J. Jesús Vargas-Hernández; Valerie Hipkins; José Ángel Prieto-Ruíz; Alberto Pérez-Luna; Christian Wehenkel
seedlings, etc ; forests; hybrid species; hybridization; vigor; Show all 5 Subjects
Abstract:
... Natural hybridization can manifest different evolutionary results, such as accelerating differentiation and facilitating speciation through the rapid origin of new biochemical compounds, physiological or morphological phenotypes that allow hybrid species to occupy new habitats, which for parental species would be inaccessible. However, these expectations are not always fulfilled, because natural h ...
seedlings, etc ; crop failure; diploidy; frost; potatoes; research; Show all 6 Subjects
Abstract:
... The technology of hybrid breeding in diploid potatoes creates opportunities to design novel and improved cultivation systems based on hybrid true potato seeds. A promising cultivation pathway to produce seed or ware tubers is by transplanting greenhouse-raised seedlings into the field. This study explored the effects of transplanting date and seedling age on tuber yield, using greenhouse-raised se ...
seedlings, etc ; chromosomes; drought tolerance; genes; genomics; winter wheat; Show all 6 Subjects
Abstract:
... To date, very little research on drought tolerance has been conducted at the seedling stage in winter wheat. In this study, two types of traits, namely tolerance and recovery traits, associated with drought tolerance were scored in biparental mapping population (BPP) and association mapping population (A-set). The results of this study revealed no or weak significant correlation between the two ty ...
seedlings, etc ; Bipolaris sorokiniana; barley; climate; pathotypes; virulence; wheat; China; Show all 8 Subjects
Abstract:
... Spot blotch caused by Cochliobolus sativus has become an important disease in the wheat-growing regions in China that has resulted from changes in the regional climate, agricultural cultivation patterns, and the susceptible wheat varieties that are widely grown. Little information is available about virulence variability and pathogenic specialization of the C. sativus isolates from major wheat-gro ...
seedlings, etc ; Quercus macrocarpa; Rhamnus cathartica; bark; goats; leaves; savannas; woodlands; Show all 8 Subjects
Abstract:
... Goats are being used increasingly to manage woody invasive plants in woodland habitats, but their specific impacts on those plants over a period of time during active, periodic browsing has not been documented. This study investigated bark-stripping by goats browsing on common buckthorn in savanna habitats (75 goats/hectare, 5 to 7 days), focusing on possible size-selective feeding and the cumulat ...
seedlings, etc ; bioavailability; mercury; methylation; methylmercury compounds; paddies; remediation; rice; sulfides; Show all 9 Subjects
Abstract:
... Mercury sulfide (HgS) constitutes the largest Hg reservoir in the lithosphere but has long been considered to be not bioavailable and a minor participant in Hg biogeochemical cycling. Herein, we report that bulk α-HgS can be dissolved and methylated in paddy soils, especially with rice culture. Bulk α-HgS exposure did not affect rice growth compared to the control group but significantly increased ...
seedlings, etc ; agriculture; corn; data collection; electronics; neural networks; precision agriculture; Show all 7 Subjects
Abstract:
... The field navigation tasks of agricultural robots are the basis for implementing field management projects in the early stages of seedlings guided by precision agriculture policies. High accuracy and execution speed of navigation tasks are needed for the escalating field machine implementations in a significantly unstructured and irregular field environment, contributing to the difficulty and urge ...
seedlings, etc ; Fagus; atmospheric precipitation; climate change; drought; ecosystems; models; summer; Greece; Show all 9 Subjects
Abstract:
... Seasonality, rather than annual precipitation levels, is expected to affect the adaptive responses of plant populations under future climate change. To estimate adaptive traits’ variation, we conducted a common garden experiment with two beech populations from contrasting climatic origins (Evros with longer drought intervals during summer and higher precipitation seasonality, and Drama representin ...
seedlings, etc ; Lauraceae; conservation status; extinction; indigenous species; risk; surveys; trees; Indonesia; Show all 9 Subjects
Abstract:
... Dehaasia pugerensis Koord. & Valeton is a threatened Indonesian Lauraceae species. It is an endemic tree known only from Jember Regency in East Java. To enhance the conservation of D. pugerensis, we conducted a population survey in several locations in Jember where the species were previously collected. The objectives were to: i) assess the current population status of D. pugerensis, ii) collect p ...
seedlings, etc ; biosynthesis; gibberellic acid; imbibition; plant growth; seed germination; tomatoes; vigor; Show all 8 Subjects
Abstract:
... Priming of seed is intended to reduce the time to germination through activation of pre-germinative processes. Seed priming is controlled hydration followed by a drying (dehydration) process. The physiological processes during hydration (imbibition) were studied in detail in tomato. In contrast, gibberellic acid changes during the dehydration phase were not studied in detail. We hypothesize that t ...
seedlings, etc ; Liriodendron tulipifera; Quercus; administrative management; forest ecology; forests; reproduction; transmittance; Show all 8 Subjects
Abstract:
... We assessed short-term light and regeneration dynamics following silvicultural gap creation in intermediately productive oak (Quercus)-dominated stands of the Northern Cumberland Plateau, USA. We established 12 experimental units comprising a harvest gap (30-m radius) and a matrix zone extending 30 m beyond the circumference of the gap. Midstory removal was performed using manual felling and chemi ...
seedlings, etc ; cauliflower; cytoplasmic male sterility; flower size; hybrids; introgression; mitochondrial DNA; stigma; Show all 8 Subjects
Abstract:
... Cytoplasmic male sterility (CMS) system is most important genetic mechanism for affordable and genetically homogenous hybrid seed production. The present study was aimed to evaluate the CMS lines and their maintainers for floral traits as well as assess suitability of mitochondrial DNA (mtDNA) markers to distinguish the fertile/sterile plants at seedling stage. Morphological observations revealed ...
seedlings, etc ; anthropogenic activities; community structure; ecological restoration; ecosystems; mortality; trees; tropical forests; Show all 8 Subjects
Abstract:
... Insect herbivory is one of the major drivers of seedling mortality in the tropics and influences plant abundances and community composition. Anthropogenic disturbance can alter patterns of insect herbivory with potential consequences on plant communities in restored forests. We planted seedlings of early‐ and later‐stage successional tree species in 13–15‐year‐old restored and remnant tropical for ...
seedlings, etc ; Achillea millefolium; dormancy; farms; gibberellic acid; potassium nitrate; seed germination; seeds; Show all 8 Subjects
Abstract:
... Poor germination and the length of time required for the growth of seedlings appropriate for planting in the farm affect the cultivation of medicinal plants such as yarrow (Achillea millefolium L). This study investigated the abilities of different concentrations of gibberellic acid (GA₃) and potassium nitrate (KNO₃), mechanical scarification, and hydropriming to improve seed germination and dorma ...
seedlings, etc ; chloroplasts; cotyledons; etiolation; lincomycin; phenotype; photomorphogenesis; radiation resistance; transcription (genetics); transcription factors; Show all 10 Subjects
Abstract:
... Plastid‐to‐nucleus retrograde signalling (RS) initiated by dysfunctional chloroplasts impact photomorphogenic development. We have previously shown that the transcription factor GLK1 acts downstream of the RS regulator GUN1 in photodamaging conditions to regulate not only the well established expression of photosynthesis‐associated nuclear genes (PhANGs) but also to regulate seedling morphogenesis ...
seedlings, etc ; CRISPR-Cas systems; Glycine max; mutants; mutation; phenotype; photomorphogenesis; phytochrome; soybeans; tetraploidy; Show all 10 Subjects
Abstract:
... Soybean (Glycine max) responds to ambient light variation by undergoing multiform morphological alterations, influencing its yield potential and stability in the field. Phytochromes (PHYs) are plant-specific red (R) and far-red (FR) light photoreceptors mediating photomorphogenesis and photoperiodic flowering. As an ancient tetraploid, soybean harbors four PHYA, two PHYB, and two PHYE paralogs. Ex ...
seedlings, etc ; administrative management; canopy; forest conservation; predation; risk; seed dispersal; trees; tropical forests; Show all 9 Subjects
Abstract:
... Scatter-hoarding rodents are important seed predators and dispersers in various forest ecosystems and significantly influence the seed fate and seedling regeneration of many tree species. Canopy openness is believed to have an important influence on the foraging behavior of scatter-hoarding rodents, mainly because of the variation in predation risk between open and canopy microsites. Most of the c ...
seedlings, etc ; decision making; environment; equations; family farms; flowers; models; risk; surveys; trade; China; Show all 11 Subjects
Abstract:
... Live streaming (LS) is considered to be a sustainable marketing strategy for regions with special agricultural products affected by the environment because of its potential to reduce sales risk and solve customer trust issues. This paper aims to explore the factors that influence Chinese flower and seedling family farms’ adoption intention of LS. An extended planning behavior theory (TPB) includin ...
seedlings, etc ; altitude; botanical composition; inventories; secondary forests; stakeholders; vegetation structure; woody plants; Ethiopia; Show all 9 Subjects
Abstract:
... This study was conducted in Menfeskidus Monastery Forest in Berehet district North Shoa Zone of Amhara Regional State, Central Ethiopia, to investigate the floristic composition, species diversity, vegetation structure, and regeneration status of the forest. A systematic sampling design was employed to collect vegetation data. Sixty-six (66) quadrats of 20 m × 20 m were laid at every 100 m interva ...