Growth and F absorbing of rice under F and Al-F interaction

Li, Yangyang; Liu, Jinhua; Wang, Hongbin; Yimei, Jiang; Zhao, L.P.

doi:10.3724/sp.j.1011.2011.01393

Cited by 6 publications

(7 citation statements)

References 4 publications

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“…= 4.2 %). Although the higher the soil compaction, the higher the initial cost of excavation, given that burrows are semipermanent, with some being abandoned and reused (Liu et al, 2013;Pech et al, 2007), sturdy entrances may reduce maintenance costs for multiple generations. The negative correlation between sedge vegetation coverage and burrow density observed in the present study reflects a decrease in energy expenditure during sturdy entrances.…”

Section: Discussionmentioning

confidence: 99%

Preference for ground cover when selecting burrow entrances in plateau pikas

Zhang,

Liu

2024

Ecology and Evolution

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Burrow‐dwelling animals such as the plateau pika (Ochotona curzoniae) often seek sturdy entrances for their burrows, which can reduce the need for frequent maintenance. The toughness of the ground surface is often reinforced by the interweaving of plant roots and often varies with the root characteristics. To better understand ground cover preferences when selecting burrow entrances by plateau pikas, we investigated the ratios of different ground covers at the rear of the entrances, as well as their coverage and underlying soil compaction in an undegraded alpine meadow on the Qinghai‐Xizang Plateau. The results indicated a clear preference hierarchy of sedges > forbs > grass > bare soil. This distribution was aligned with the soil compaction hierarchy of the topsoil layer beneath each cover type. The sedge coverage was significantly negatively correlated with burrow density, suggesting that plateau pikas opt for sturdy entrances with a natural inclination toward energy conservation. However, there is consensus that the population density of plateau pikas often reaches its maximum on almost nonvegetated “black soil beaches.” We hypothesized that the survival benefits brought about by vegetation degradation would be higher than the maintenance costs of burrow entrances.

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Section: Discussionmentioning

confidence: 99%

Preference for ground cover when selecting burrow entrances in plateau pikas

Zhang,

Liu

2024

Ecology and Evolution

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“…Arrowheads are capable of both sexual and asexual reproduction; however, they propagate asexually in cultivation and ex-situ conservation [3,4]. Tubers were chosen as the reproductive organs in the present study and new plants were grown from the tuber apical buds.…”

Section: Plant Materials and Dna Extractionmentioning

confidence: 99%

“…After quality filtering, 33,792,495 high-quality SLAFs containing 385.64 million reads, were identified. The number of reads for each accession ranged from 1,844,938 to 5,479,485, with a mean of 3,474,195. The number of SLAFs for each accession varied from 195,256 to 391,453, with a mean of 304,437.…”

Section: Characterization Of Specific-length Amplified Fragment Seque...mentioning

confidence: 99%

Assessment of phylogenetic relationships and genetic diversity of Sagittaria trifolia using phenotypic traits and SNP markers

Ji,

Li,

Huang

et al. 2024

PLoS ONE

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The aquatic perennial herb Sagittaria trifolia L. commonly known as arrowhead, has been utilized in China both as a culinary vegetable and in traditional medicines. Characterizing the phylogenetic relationships and genetic diversity of arrowheads is crucial for improved management, conservation, and efficient utilization of the germplasm resources associated with this species. Herein, we presented the phenotypic traits and genome-wide DNA marker-based analyses of 111 arrowhead accessions, most of which were from China. Cluster analysis revealed that arrowhead could be categorized into two clusters based on 11 phenotypic traits, with Cluster 1 comprising two subclusters. All accessions were clustered into three sub-clusters based primarily on leaf shape and tuber weight. A set of 759,237 high-quality single-nucleotide polymorphisms was identified and used to assess the phylogenetic relationships. Population structure and phylogenetic tree analyses suggested that the accessions could be classified into two major groups, Group I was further subdivided into two subgroups, aligning with the clusters identified through morphological classification. By employing Sagittaria lichuanensis as an outgroup, the rooted tree revealed that the evolutionary relationships within the three groups followed a progression from Group I-1 to Group I-2 and finally to Group II. The landraces were clustered into one group along with the remaining wild accessions. The level of genetic diversity for Group I (π = 0.26) was slightly lower than that which was estimated for Group II (π = 0.29). The lowest pairwise differentiation levels (Fst, 0.008) were obtained from the comparison between groups I-2 and II, indicating that the two groups were the most closely related. This study provides novel insights into germplasm classification, evolutionary relationships, genomics and arrowhead breeding.

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“…Five targets were placed on the scene to locate the scans. Only the points derived from the laser were used in the analysis, with no accompanying photographs [16] .…”

Section: Soil Surface Roughnessmentioning

confidence: 99%

Effect of soil surface roughness on emergence rate and yield of mechanized direct-seeded rapeseed based on 3D laser scanning

Chen,

Gao,

et al. 2023

International Journal of Agricultural and Biological Engineering

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The quality of seedbed after sowing such as soil surface roughness is one of the key factors affecting the seedling emergence of rapeseed, which ultimately affected crop yield. However, the effect of soil surface roughness on seedling emergence and yield of rapeseed is still unclear. In this study, field experiments at the experimental site of Jianli and Shayang were carried out. Three treatments were designed: relative slow (M1), medium (M2), and fast (M3) forward speed of the unit. Soil surface roughness measured by a 3D laser scanner, seed quantity of the seeder, emergence rate and yield of rapeseed were determined to investigate the soil surface roughness effect on emergence rate and yield of rapeseed. The results showed that as the forward speed of the unit increased, the compartment surface became rougher. Compared with the M1 and M2 treatments, soil surface roughness under the M3 treatment increased by 36.5% and 9.8%, respectively. The actual seed quantity of the seeder under different treatments ranged from 3 806.56 to 4 158.18 g/hm 2 . The average error rate of the actual and theoretical seed quantity was less than 5%, which met the operational quality requirements for seeding rapeseed crops. As the forward speed of the unit increased, the actual seed quantity of the seeder gradually increased while the emergence rate and yield of rapeseed decreased. The seed quantity under the M3 treatment increased by 6.9% and 4.7%, while the emergence rate of rapeseed decreased by 3.3% and 2.0%, and the yield decreased by 23.2% and 13.1%, compared with the M1 and M2 treatments, respectively. Correlation analysis indicated that emergence rate and yield of rapeseed were negatively influenced by soil surface roughness. Considering rapeseed emergence rate, seed yield, and economic benefits, the M1 treatment was recommended. But considering the factor that the M1 treatment may reduce the unit operation efficiency, and thus resulting in lower cost of production, M2 could be recommended in actual farming. The results of this study laid a theoretical foundation for analyzing the relationship between the seedbed surface quality and seedling emergence and yield.

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Growth and F absorbing of rice under F and Al-F interaction

Cited by 6 publications

References 4 publications

Preference for ground cover when selecting burrow entrances in plateau pikas

Preference for ground cover when selecting burrow entrances in plateau pikas

Assessment of phylogenetic relationships and genetic diversity of Sagittaria trifolia using phenotypic traits and SNP markers

Effect of soil surface roughness on emergence rate and yield of mechanized direct-seeded rapeseed based on 3D laser scanning

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