scholarly journals QTL analysis of root traits as related to phosphorus efficiency in soybean

2010 ◽  
Vol 106 (1) ◽  
pp. 223-234 ◽  
Author(s):  
Quan Liang ◽  
Xiaohui Cheng ◽  
Mantong Mei ◽  
Xiaolong Yan ◽  
Hong Liao
Keyword(s):  
Qtl Analysis ◽  
Root Traits ◽  
Phosphorus Efficiency

Genetic variability for root morph-architecture traits and root growth dynamics as related to phosphorus efficiency in soybean

2010 ◽  
Vol 37 (4) ◽  
pp. 304 ◽  
Author(s):  
Junhua Ao ◽  
Jiabing Fu ◽  
Jiang Tian ◽  
Xiaolong Yan ◽  
Hong Liao
Keyword(s):  
Genetic Variability ◽  
Root Growth ◽  
Recombinant Inbred Lines ◽  
Growth Dynamics ◽  
Root Traits ◽  
Phosphorus Efficiency ◽  
P Efficiency ◽  
Glycine Max L ◽  
Positive Correlations

Root morphology and architecture are believed to be important for plant phosphorus (P) efficiency, but their genetic information is relatively scarce. In the present study, a field and a specially designed minirhizotron experiments were conducted using two soybean (Glycine max L. Merr.) genotypes and their 88 recombinant inbred lines (RILs) to elucidate the genetic variability for root morph-architecture traits and root growth dynamics as related to P efficiency in soybean. The results indicated that the root morph-architecture traits were continually segregated in the RILs with a normal distribution, indicating which are possibly controlled by quantitative trait loci. Significantly positive correlations were found between root and P traits, suggesting feasibility of screening P efficient genotype through simple selection of root traits in field. Most root morph-architecture traits were closely correlated, showing a coordinating contribution to P efficiency. Furthermore, root morphological traits always had higher heritability than architecture traits, thus, could serve as more reliable index in field selection. The dynamic parameters of root growth from the minirhizotron experiment showed that the P efficient genotype established longer and larger root system with preferring distribution in surface layer and also kept more active roots, therefore, had a better growth performance in field, than the P-inefficient genotype. Taken together, this is the first report on in situ root growth dynamics and its relation to P efficiency using minirhizotron systems in crops. Our findings help to better understand the relationships between P efficiency and root traits and, thus, facilitate development of P efficient genotypes in crops.

scholarly journals Genetic variation for root architectural traits in response to phosphorus deficiency in mungbean at the seedling stage

2019 ◽  
Author(s):  
Venkata Ravi Prakash Reddy ◽  
M. Aski ◽  
G.P. Mishra ◽  
H.K. Dikshit ◽  
Akanksha Singh ◽  
...  
Keyword(s):  
Phosphorus Deficiency ◽  
Phosphorus Uptake ◽  
Root Traits ◽  
Seedling Stage ◽  
Phosphorus Efficiency ◽  
Root Tips ◽  
Uptake Efficiency ◽  
Highly Efficient ◽  
Low Phosphorus ◽  
Architectural Traits

AbstractRoots enable the plant to survive in natural environment by providing anchorage and acquisition of water and nutrients. In this study, 153 mungbean genotypes were studied to compare root architectural traits under normal and low phosphorus conditions. Significant variations, medium to high heritability, near normal distribution and significant correlations were observed for studied root traits. Total root length (TRL) was positively correlated with total surface area (TSA), total root volume (TRV), total root tips (TRT) and root forks. The first two principal components explained the 79.19 % and 78.84% of the total variation under normal and low phosphorus conditions. TRL, TSA and TRV were major contributors of variation and can be utilized for screening of phosphorus uptake efficiency at seedling stage. Released Indian mungbean varieties were found to be superior for root traits than other genotypic groups. Based on comprehensive phosphorus efficiency measurement, IPM-288, TM 96-25, TM 96-2, M 1477, PUSA 1342 were found to be best five highly efficient genotypes whereas M 1131, PS-16, Pusa Vishal, M 831, IC 325828 were highly inefficient genotypes. These identified highly efficient lines are valuable genetic resources for phosphorus uptake efficiency that could be used in mungbean breeding programme.

scholarly journals Identification of QTLs for relative root traits associated with phosphorus efficiency in two culture systems in Brassica napus

Euphytica ◽  
2019 ◽  
Vol 215 (11) ◽  
Author(s):  
Wei Wang ◽  
Ying Zhang ◽  
Guangda Ding ◽  
Philip J. White ◽  
Martin R. Broadley ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Root Traits ◽  
Phosphorus Efficiency ◽  
Culture Systems ◽  
Relative Root

scholarly journals Main Root Adaptations in Pepper Germplasm (Capsicum spp.) to Phosphorus Low-Input Conditions

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 637 ◽  
Author(s):  
Leandro Pereira-Dias ◽  
Daniel Gil-Villar ◽  
Vincente Castell-Zeising ◽  
Ana Quiñones ◽  
Ángeles Calatayud ◽  
...  
Keyword(s):  
Fine Roots ◽  
Phosphorus Uptake ◽  
Root Traits ◽  
Average Diameter ◽  
Phosphorus Efficiency ◽  
Phosphorus Use Efficiency ◽  
Low Input ◽  
Wide Range ◽  
Capsicum Spp ◽  
Use Efficiency

Agriculture will face many challenges regarding food security and sustainability. Improving phosphorus use efficiency is of paramount importance to face the needs of a growing population while decreasing the toll on the environment. Pepper (Capsicum spp.) is widely cultivated around the world; hence, any breakthrough in this field would have a major impact in agricultural systems. Herein, the response to phosphorus low-input conditions is reported for 25 pepper accessions regarding phosphorus use efficiency, biomass and root traits. Results suggest a differential response from different plant organs to phosphorus starvation. Roots presented the lowest phosphorus levels, possibly due to mobilizations towards above-ground organs. Accessions showed a wide range of variability regarding efficiency parameters, offering the possibility of selecting materials for different inputs. Accessions bol_144 and fra_DLL showed an interesting phosphorus efficiency ratio under low-input conditions, whereas mex_scm and sp_piq showed high phosphorus uptake efficiency and mex_pas and sp_bola the highest values for phosphorus use efficiency. Phosphorus low-input conditions favored root instead of aerial growth, enabling increases of root total length, proportion of root length dedicated to fine roots and root specific length while decreasing roots’ average diameter. Positive correlation was found between fine roots and phosphorus efficiency parameters, reinforcing the importance of this adaptation to biomass yield under low-input conditions. This work provides relevant first insights into pepper’s response to phosphorus low-input conditions.

Meta-QTL analysis and identification of candidate genes related to root traits in maize

Euphytica ◽  
2018 ◽  
Vol 214 (12) ◽  
Author(s):  
Jian Guo ◽  
Lin Chen ◽  
Yongxiang Li ◽  
Yunsu Shi ◽  
Yanchun Song ◽  
...  
Keyword(s):  
Candidate Genes ◽  
Qtl Analysis ◽  
Root Traits

scholarly journals A genetic relationship between nitrogen use efficiency and seedling root traits in maize as revealed by QTL analysis

2015 ◽  
Vol 66 (11) ◽  
pp. 3175-3188 ◽  
Author(s):  
Pengcheng Li ◽  
Fanjun Chen ◽  
Hongguang Cai ◽  
Jianchao Liu ◽  
Qingchun Pan ◽  
...  
Keyword(s):  
Genetic Relationship ◽  
Nitrogen Use Efficiency ◽  
Qtl Analysis ◽  
Root Traits ◽  
Nitrogen Use ◽  
Seedling Root ◽  
Use Efficiency
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