scholarly journals Comparison of the response to phosphorus deficiency in two lupin species,Lupinus albusandL. angustifolius, with contrasting root morphology

2014 ◽  
Vol 38 (3) ◽  
pp. 399-410 ◽  
Author(s):  
SACHIKO FUNAYAMA-NOGUCHI ◽  
KO NOGUCHI ◽  
ICHIRO TERASHIMA



2008 ◽  
Vol 31 (3) ◽  
pp. 557-570 ◽  
Author(s):  
Baolan Wang ◽  
Jianbo Shen ◽  
Caixian Tang ◽  
Zed Rengel




Forests ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 215
Author(s):  
Rongxiu Xie ◽  
Jianfeng Hua ◽  
Yunlong Yin ◽  
Fuxu Wan

The phosphorus (P) deficiency is the one of the key constraints for Taxodium ‘Zhongshanshan’ afforestation. A hydroponic experiment was conducted to explore root foraging ability for P in different genotypes of Taxodium ‘Zhongshanshan’ (T.‘Zhongshanshan’) and their parents (T.mucronatum and T.distichum). Five P levels of CK (31 mg/L), P15 (15 mg/L), P10 (10 mg/L), P5 (5 mg/L), and P0 (0 mg/L) were set up as the P deficiency stress treatment. The plant P contents, root morphological indices, and plant growth traits of different taxodium genotypes were measured. Meanwhile, the root foraging ability for P was evaluated with the membership function method in combination with weight. Results showed that: (1) Except the plant P content, the root morphology, plant net biomass, and height showed significant differences among the different genotypes (p < 0.05); the P deficiency stress had no significant influence on root morphology, but a significant influence on plant net biomass and height and P content; (2) T.mucronatum and T.‘Zhongshanshan’302 had relatively lower values of root length, root surface area, root volume, and plant net biomass, but had no difference of plant P content with the other genotypes; (3) T.mucronatum and T.‘Zhongshanshan’302 had higher root foraging ability for P than the other genotypes; (4) the stepwise regression analysis revealed the root volume as the main factor significantly influencing the root foraging ability. This study concluded that different genotypes of T.’Zhongshanshan’ and their parents had different root foraging ability for P, and breeding and screening the fine varieties is conducive for the afforestation in P-limited areas.



2011 ◽  
Vol 57 (No. 3) ◽  
pp. 135-138 ◽  
Author(s):  
P.C. Magalhães ◽  
T.C. de Souza ◽  
F.R.O. Cantão

In Brazil savanna type of soils presents problems with phosphorus content. The selection and identification of maize genotypes to such environments is a high priority of Brazilian research. The purpose of this paper was to evaluate, in soils with different P concentrations, the dry mass attributes and characteristics of root morphology in eight maize lines with different genetic background and origins of the Breeding Program of the National Research Center for Maize and Sorghum. The experiment was carried out in plots prepared with two levels of phosphorus: high phosphorus (HP) and low phosphorus (LP). The experimental design was randomized blocks with three replications. The evaluation of the characteristics of the shoots and the root system morphology was performed 21 days after sowing. The WinRhizo program of images analysis was used for the root morphology. There were no differences between the phosphorus levels for the dry mass attributes. However, when we compared P levels, root morphology of L13.1.2 strain performed the highest surface area (SA) and total root length (RL), length of thin (TRL) and very thin (VTRL) roots in low P concentration. The root systems digital images analysis techniques allowed efficient discrimination of maize genotypes in environments with low P levels.



2012 ◽  
Vol 18 (6) ◽  
pp. 1009 ◽  
Author(s):  
Luojin YANG ◽  
Hongbin TAO ◽  
Pu WANG


2002 ◽  
Vol 94 (1) ◽  
pp. 96 ◽  
Author(s):  
Carlos Costa ◽  
Lianne M. Dwyer ◽  
Xiaomin Zhou ◽  
Pierre Dutilleul ◽  
Chantal Hamel ◽  
...  


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