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Salinity-induced changes in the morphology and major mineral nutrient composition of purslane (Portulaca oleracea L.) accessions.

Alam MA, Juraimi AS, Rafii MY, Hamid AA, Aslani F, Hakim MA - Biol. Res. (2016)

Bottom Line: Most of the morphological traits measured were reduced at varied salinity levels (0.0, 8, 16, 24 and 32 dS m(-1)), but plant height was found to increase in Ac1 at 16 dS m(-1) salinity, and Ac13 was the most affected accession.The highest fresh and dry weight reductions were noted in Ac8 and Ac6, respectively, at 32 dS m(-1) salinity, whereas the highest increase in both fresh and dry weight was recorded in Ac9 at 24 dS m(-1) salinity compared to the control.In contrast, at lower salinity levels, all of the measured mineral levels were found to increase and later decrease with increasing salinity, but the performance of different accessions was different depending on the salinity level.

View Article: PubMed Central - PubMed

Affiliation: School of Agriculture Science and Biotechnology, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Tembila Campus, 22200, Besut, Terengganu, Malaysia. amirulalam@unisza.edu.my.

ABSTRACT
This study was undertaken to determine the effects of varied salinity regimes on the morphological traits (plant height, number of leaves, number of flowers, fresh and dry weight) and major mineral composition of 13 selected purslane accessions. Most of the morphological traits measured were reduced at varied salinity levels (0.0, 8, 16, 24 and 32 dS m(-1)), but plant height was found to increase in Ac1 at 16 dS m(-1) salinity, and Ac13 was the most affected accession. The highest reductions in the number of leaves and number of flowers were recorded in Ac13 at 32 dS m(-1) salinity compared to the control. The highest fresh and dry weight reductions were noted in Ac8 and Ac6, respectively, at 32 dS m(-1) salinity, whereas the highest increase in both fresh and dry weight was recorded in Ac9 at 24 dS m(-1) salinity compared to the control. In contrast, at lower salinity levels, all of the measured mineral levels were found to increase and later decrease with increasing salinity, but the performance of different accessions was different depending on the salinity level. A dendrogram was also constructed by UPGMA based on the morphological traits and mineral compositions, in which the 13 accessions were grouped into 5 clusters, indicating greater diversity among them. A three-dimensional principal component analysis also confirmed the output of grouping from cluster analysis.

No MeSH data available.


Relationship between salinity and cation levels measured in purslane (pooled across accessions)
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Fig1: Relationship between salinity and cation levels measured in purslane (pooled across accessions)

Mentions: The sodium–calcium ratio was found to increase with lower levels of salinity but decreased polynomially (R2 = 0.956) at the highest level of salinity (Fig. 1). The sodium–potassium ratio was influenced by the different levels of salinity in purslane and the ratios increased polynomially (R2 = 0.994) with salinity (Fig. 1). The potassium–phosphorus ratio declined with lower levels of salinity stress but later tended to increase polynomially (R2 = 0.854) with increased salinity levels (Fig. 1). The magnesium–calcium ratio decreased initially but later increased with increasing salinity levels (R2 = 0.909) (Fig. 1). The zinc to iron ratio was also found to decrease at the beginning of salinity stress but to later increase polynomially (R2 = 0.935) with increasing salinity levels (Fig. 1).Fig. 1


Salinity-induced changes in the morphology and major mineral nutrient composition of purslane (Portulaca oleracea L.) accessions.

Alam MA, Juraimi AS, Rafii MY, Hamid AA, Aslani F, Hakim MA - Biol. Res. (2016)

Relationship between salinity and cation levels measured in purslane (pooled across accessions)
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4836151&req=5

Fig1: Relationship between salinity and cation levels measured in purslane (pooled across accessions)
Mentions: The sodium–calcium ratio was found to increase with lower levels of salinity but decreased polynomially (R2 = 0.956) at the highest level of salinity (Fig. 1). The sodium–potassium ratio was influenced by the different levels of salinity in purslane and the ratios increased polynomially (R2 = 0.994) with salinity (Fig. 1). The potassium–phosphorus ratio declined with lower levels of salinity stress but later tended to increase polynomially (R2 = 0.854) with increased salinity levels (Fig. 1). The magnesium–calcium ratio decreased initially but later increased with increasing salinity levels (R2 = 0.909) (Fig. 1). The zinc to iron ratio was also found to decrease at the beginning of salinity stress but to later increase polynomially (R2 = 0.935) with increasing salinity levels (Fig. 1).Fig. 1

Bottom Line: Most of the morphological traits measured were reduced at varied salinity levels (0.0, 8, 16, 24 and 32 dS m(-1)), but plant height was found to increase in Ac1 at 16 dS m(-1) salinity, and Ac13 was the most affected accession.The highest fresh and dry weight reductions were noted in Ac8 and Ac6, respectively, at 32 dS m(-1) salinity, whereas the highest increase in both fresh and dry weight was recorded in Ac9 at 24 dS m(-1) salinity compared to the control.In contrast, at lower salinity levels, all of the measured mineral levels were found to increase and later decrease with increasing salinity, but the performance of different accessions was different depending on the salinity level.

View Article: PubMed Central - PubMed

Affiliation: School of Agriculture Science and Biotechnology, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Tembila Campus, 22200, Besut, Terengganu, Malaysia. amirulalam@unisza.edu.my.

ABSTRACT
This study was undertaken to determine the effects of varied salinity regimes on the morphological traits (plant height, number of leaves, number of flowers, fresh and dry weight) and major mineral composition of 13 selected purslane accessions. Most of the morphological traits measured were reduced at varied salinity levels (0.0, 8, 16, 24 and 32 dS m(-1)), but plant height was found to increase in Ac1 at 16 dS m(-1) salinity, and Ac13 was the most affected accession. The highest reductions in the number of leaves and number of flowers were recorded in Ac13 at 32 dS m(-1) salinity compared to the control. The highest fresh and dry weight reductions were noted in Ac8 and Ac6, respectively, at 32 dS m(-1) salinity, whereas the highest increase in both fresh and dry weight was recorded in Ac9 at 24 dS m(-1) salinity compared to the control. In contrast, at lower salinity levels, all of the measured mineral levels were found to increase and later decrease with increasing salinity, but the performance of different accessions was different depending on the salinity level. A dendrogram was also constructed by UPGMA based on the morphological traits and mineral compositions, in which the 13 accessions were grouped into 5 clusters, indicating greater diversity among them. A three-dimensional principal component analysis also confirmed the output of grouping from cluster analysis.

No MeSH data available.