Clematis is one of the large worldwide genera Ranunculaceae Juss. Family, with high ornamental and medicinal value. China modern distribution centre abundant natural populations. Due to complexity morphological diversity Clematis, genus difficult classify systematically, in particular, phylogenetic position endangered acerifolia highly controversial. The use mitochondrial complete genome a powerful molecular method that frequently used for inferring plants phylogenies. However, studies on...

We investigated the light reactions, CO2 assimilation, but also chloroplast ultrastructure in upper three functional leaves (flag, 2nd, and 3rd leaves) of Chinese super-high-yield hybrid rice (Oryza sativa L.) Liangyoupeijiu (LYPJ) with ultraviolet-B (UV-B) treatment during reproductive development. Photosynthetic parameters showed that 3 LYPJ entered into senescence approximately 15 days after flag leaf emergence (DAE). Leaves UV-B exhibited greater efficiency absorbing utilizing energy...

Quercus variabilis (Fagaceae) is an ecologically and economically important deciduous broadleaved tree species native to widespread in East Asia. It a valuable woody indicator of local forest health, occupies dominant position ecosystems However, genomic resources from Q. are still lacking. Here, we present high-quality genome generated by PacBio HiFi Hi-C sequencing. The assembled size 787 Mb, with contig N50 26.04 Mb scaffold 64.86 comprising 12 pseudo-chromosomes. repetitive sequences...

Endangered species can achieve population growth through utilization. Juglans mandshurica is an endangered species, which be used in gardens and street trees. To avoid degradation caused by long-term nursery cultivation, we need to introduce high-quality wild sources of germplasm for hybridization. In the past, when selection strains was carried out, attention often paid performance different traits each strain. The with advantages many more were selected as target. this paper, proposed that...

Phoebe sheareri is an excellent roadside tree with a wide distribution range and high ornamental value. Excessive moisture can affect the external morphology, microstructure, ultrastructure of leaf. Little known at present regarding leaf structure P. under waterlogging stress. In this paper, morphology leaves, microstructure epidermis, mesophyll cells seedlings stress drainage were dynamically observed. Waterlogging contributed to yellowing wilting seedling gradual closing epidermal stomata,...

The seeds of Tilia miqueliana Maxim. exhibit deep dormancy, which is categorized as combinational dormancy. This study utilized a comprehensive treatment involving magnetic fields, gibberellin (GA3), and cold stratification to promote the release seed physiological dormancy enhance germination rates. After being soaked in 98% H2SO4 for 15 min, mature were exposed field treatments (150 MT, 250 MT) different durations (25 45 65 85 min), well GA3 solution soaking (concentration: 0 μmol·L−1,...

Modulation of the gaseous environment using oxygen absorbers and/or silica gel shows potential for enhancing seed longevity through trapping toxic volatiles emitted by seeds during artificial ageing. Volatile profiling non-invasive gas chromatography-mass spectrometry provides insight into specific processes occurring Production alcohols, aldehydes and ketones, derived from such as alcoholic fermentation, lipid peroxidation Maillard reactions, are known to be dependent on storage temperature...

In the context of climate change in recent years, fate woody plant seed has an important impact on forest regeneration. Seed mass is reproductive strategy plants. There are huge differences between gymnosperms (mainly conifers) and angiosperms (flowering plants) terms reproduction hydraulic strategies; however, little known about changes along aridity gradients taxonomical groups such as angiosperms, which limit our understanding plants under warming-induced drying. We collected data from a...

Liquidambar formosana Hance is a common deciduous broad-leaved tree known for its fast growth rate and adaptability. However, excessive logging has substantially reduced the area of natural forest patches L. formosana, seedling regeneration essential long-term continuation populations. To explore effects light intensity on emergence early controlled experiment was conducted under three light-intensity treatments (20%, 60%, 100% full sunlight, i.e., photosynthetic photon flux densities...

The Quercus variabilis, a deciduous broadleaved tree species, holds significant ecological and economical value. While chromosome-level genome for this species has been made available, it remains riddled with unanchored sequences gaps. In study, we present nearly complete comprehensive telomere-to-telomere (T2T) haplotype-resolved reference Q. variabilis. This was achieved through the integration of ONT ultra-long reads, PacBio HiFi long Hi-C data. resultant two haplotype genomes measure 789...

This study aims to investigate the desiccation sensitivity characteristics and critical moisture content of recalcitrant Quercus variabilis seed. Additionally, cryopreservation seeds were studied. Wild-collected Q. used in this research. Differential scanning calorimetry (DSC) was employed evaluate germination indices at different contents measured. The initial embryonic axes decreased from 33.1% 40.9%, respectively, 10.0%, accompanied by a rate decrease 95.6% 90.0% 6.3% 60.0%, respectively....

SummaryChanges in chlorophyll fluorescence, leaf biochemistry, and ultra-structure were studied 10-year-old female ginkgo trees (Ginkgo biloba L.) cvs. Dafozhi Qixingguo, from April to October Jiangdu, Jiangsu Province, P. R. China. The maximum quantum efficiency (Fv / Fm)of PS II the potential photosynthetic capacity Fo) of peaked June July, then declined. Changes concentrations a total followed these patterns, whereas changes b andtotal carotenoids less dramatic or had no clear trend....

Abstract Background Quercus aliena is a major montane tree species of subtropical and temperate forests in China, with important ecological economic value. In order to reveal the species’ population dynamics, genetic diversity, structure, association mountain habitats during evolutionary process, we re-sequenced genomes 72 Q. individuals. Results The whole chloroplast nuclear were used for this study. Phylogenetic analysis using genome dataset supported four clades , while three clades....

The complete chloroplast genome of Hovenia dulcis was sequenced with Illumina HiSeq 2000 platform. It a typical quadruple structure as other plants 162,962 bp in length, including large single-copy (LSC: 90,900 bp) region and small (SSC: 18,920 which were separated by pair inverted repeats (IRa, b: 26,571 region. overall GC content is 36.6%. A total 130 genes annotated contained 85 protein-coding the Trans splicing gene rps12, 37 tRNA genes, 8 rRNA genes. ML phylogenetic analysis compared 6...

Identification of the evolution history and genetic diversity a species is important in utilization novel variation this species, as well for its conservation. Pistacia chinensis an biodiesel tree crop China, due to high oil content fruit. The aim study was uncover structure P. investigate influence intraspecific gene flow on process domestication diversification varieties. We investigated chinensis, introgression subpopulations, through analysis plastid nuclear genomes 39 individuals from...

Abstract Juglans plant with important ecological and economic value is endangered in China. And the basis for its protection genetic diversity assessment. In present study, structure of 134 samples from 9 natural J. mandshurica populations 2 related species were surveyed by EST-SSR markers. The results showed that (1) 77 alleles amplified within markers which had high polymorphism (PIC = 0.5070). Compared other China, population Shandong areas was relatively low (H O =0.3333, I=0.7051). (2)...

In the field of digital photogrammetry and computer vision, determination conjugate points in a stereo image pair, referred to as "image matching," is critical step realize automatic surveying recognition. Traditional matching methods encounter some problems close-range photogrammetry, because change gray-scale or texture not obvious images. The main shortcoming traditional that geometric information fully used, which will lead wrong results regions with poor texture. To use geometry...

Thermal properties of wild Castanea mollissima seeds embryos with different moisture contents, and the optimal contents for cryopreservation were studied. Seeds similar size weight (3.5 ± 0.3g) put in silica gel at 0 to 7 days, embryo content, viability thermal measured everyday. The results showed that onset temperature crystallization peak mean enthalpy decreased decrease content. Exothermic disappeared when dried 4 an content 0.45 0.15 gH2O/g dw. unfrozen water (WCu) was 0.247 found be...

Abstract Background: Quercus acutissima is an economic and ecological tree species often used for afforestation of arid semi-arid lands considered excellent soil water conservation. However, the Q. genome sequencing assembly have not been reported, which limiting molecular biology studies breeding progress in . Results: We generated a 956.9 Mb with contig N50 1,203,427 bp 53,304 annotated genes. Meanwhile, assembled contigs (1,507) assigned to total 12 chromosomes. The BUSCO database...

Alniaria alnifolia (Siebold and Zucc.) Rushforth, 2018 (alternative name: Sorbus alnifolia) belongs to the genus of family Rosaceae is widely distributed in northern China, Korea, Japan. It an essential resource used construction, pharmaceuticals, food industries. also treat various diseases, such as fever, hyperglycemia, rash, asthma, bronchitis, constipation, leprosy, anemia, other skin ailments. In this study, we sequenced a sample A. determined its complete chloroplast genome. The genome...