DIFFERENTIAL GROWTH RESPONSE, PHOSPHORUS ABSORPTION, TRANSPORT AND UTILIZATION BY WHEAT GENOTYPES UNDER PHOSPHORUS DEFICIENCY
Genotypic differences in phosphorus (P) acquisition and/or utilization can be exploited to enhance the efficiency of P fertilizers and crop productivity on P-deficient soils. Wheat genotypes were evaluated for relative growth rate, P absorption, transport and utilization in a hydroponic study at de...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Sindh Agriculture University, Tandojam
2019-06-01
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| Series: | Pakistan Journal of Agriculture, Agricultural Engineering & Veterinary Sciences |
| Subjects: | |
| Online Access: | https://pjaaevs.sau.edu.pk/index.php/ojs/article/view/310 |
| _version_ | 1797777373419012096 |
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| author | M. Abbas M. irfan J. A. Shah N. Depar N. A. Sial |
| author_facet | M. Abbas M. irfan J. A. Shah N. Depar N. A. Sial |
| author_sort | M. Abbas |
| collection | DOAJ |
| description |
Genotypic differences in phosphorus (P) acquisition and/or utilization can be exploited to enhance the efficiency of P fertilizers and crop productivity on P-deficient soils. Wheat genotypes were evaluated for relative growth rate, P absorption, transport and utilization in a hydroponic study at deficient P (10 µM) and adequate P (200 µM) levels. Phosphorus deficiency drastically reduced dry matter production, P accumulation in root and shoot, relative growth rate (RGR) of shoot, P absorption rate (PAR), and P transport rate of wheat genotypes. However, root- shoot ratio, RGR of root, and P utilization rate (PUR) of shoot and root increased significantly (P ? 0.001) in response to P deficiency. The genotypes SDW-4, SWD-6, YCBW-10 were found superior regarding dry biomass production and relative growth rate of shoot at low P, and therefore can be considered as P-efficient. Strong positive correlation of shoot dry matter with PUR of shoot (r = 0.80, P ? 0.001), while a non-significant relationship with PAR (r = 0.12, P ? 0.05) showed that P utilization was the dominant mechanism for high P efficiency in most of genotypes under P deficiency. The P-efficiency of SDW-6 and YCBW-10 at low P level could be explained by their higher PAR and PUR. However, P utilization appeared to be the main strategy for high P efficiency in SDW-4. The results suggested that wide variations exist among wheat genotypes for mechanisms responsible for P efficiency under low P supply which can be exploited in breeding ventures.
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| first_indexed | 2024-03-12T23:04:02Z |
| format | Article |
| id | doaj.art-c3225c901ef94cb5a853672a2887d235 |
| institution | Directory Open Access Journal |
| issn | 1023-1072 2663-7863 |
| language | English |
| last_indexed | 2024-03-12T23:04:02Z |
| publishDate | 2019-06-01 |
| publisher | Sindh Agriculture University, Tandojam |
| record_format | Article |
| series | Pakistan Journal of Agriculture, Agricultural Engineering & Veterinary Sciences |
| spelling | doaj.art-c3225c901ef94cb5a853672a2887d2352023-07-19T07:44:43ZengSindh Agriculture University, TandojamPakistan Journal of Agriculture, Agricultural Engineering & Veterinary Sciences1023-10722663-78632019-06-0135(1) JuneDIFFERENTIAL GROWTH RESPONSE, PHOSPHORUS ABSORPTION, TRANSPORT AND UTILIZATION BY WHEAT GENOTYPES UNDER PHOSPHORUS DEFICIENCYM. Abbas0M. irfan1J. A. Shah2N. Depar3N. A. Sial4Soil and Environmental Sciences Division, Nuclear Institute of Agriculture, Tandojam, PakistanSoil and Environmental Sciences Division, Nuclear Institute of Agriculture, Tandojam, PakistanSoil and Environmental Sciences Division, Nuclear Institute of Agriculture, Tandojam, PakistanSoil and Environmental Sciences Division, Nuclear Institute of Agriculture, Tandojam, PakistanSoil and Environmental Sciences Division, Nuclear Institute of Agriculture, Tandojam, Pakistan Genotypic differences in phosphorus (P) acquisition and/or utilization can be exploited to enhance the efficiency of P fertilizers and crop productivity on P-deficient soils. Wheat genotypes were evaluated for relative growth rate, P absorption, transport and utilization in a hydroponic study at deficient P (10 µM) and adequate P (200 µM) levels. Phosphorus deficiency drastically reduced dry matter production, P accumulation in root and shoot, relative growth rate (RGR) of shoot, P absorption rate (PAR), and P transport rate of wheat genotypes. However, root- shoot ratio, RGR of root, and P utilization rate (PUR) of shoot and root increased significantly (P ? 0.001) in response to P deficiency. The genotypes SDW-4, SWD-6, YCBW-10 were found superior regarding dry biomass production and relative growth rate of shoot at low P, and therefore can be considered as P-efficient. Strong positive correlation of shoot dry matter with PUR of shoot (r = 0.80, P ? 0.001), while a non-significant relationship with PAR (r = 0.12, P ? 0.05) showed that P utilization was the dominant mechanism for high P efficiency in most of genotypes under P deficiency. The P-efficiency of SDW-6 and YCBW-10 at low P level could be explained by their higher PAR and PUR. However, P utilization appeared to be the main strategy for high P efficiency in SDW-4. The results suggested that wide variations exist among wheat genotypes for mechanisms responsible for P efficiency under low P supply which can be exploited in breeding ventures. https://pjaaevs.sau.edu.pk/index.php/ojs/article/view/310absorption raterelative growth ratetransport rateutilization ratewheat genotypes |
| spellingShingle | M. Abbas M. irfan J. A. Shah N. Depar N. A. Sial DIFFERENTIAL GROWTH RESPONSE, PHOSPHORUS ABSORPTION, TRANSPORT AND UTILIZATION BY WHEAT GENOTYPES UNDER PHOSPHORUS DEFICIENCY Pakistan Journal of Agriculture, Agricultural Engineering & Veterinary Sciences absorption rate relative growth rate transport rate utilization rate wheat genotypes |
| title | DIFFERENTIAL GROWTH RESPONSE, PHOSPHORUS ABSORPTION, TRANSPORT AND UTILIZATION BY WHEAT GENOTYPES UNDER PHOSPHORUS DEFICIENCY |
| title_full | DIFFERENTIAL GROWTH RESPONSE, PHOSPHORUS ABSORPTION, TRANSPORT AND UTILIZATION BY WHEAT GENOTYPES UNDER PHOSPHORUS DEFICIENCY |
| title_fullStr | DIFFERENTIAL GROWTH RESPONSE, PHOSPHORUS ABSORPTION, TRANSPORT AND UTILIZATION BY WHEAT GENOTYPES UNDER PHOSPHORUS DEFICIENCY |
| title_full_unstemmed | DIFFERENTIAL GROWTH RESPONSE, PHOSPHORUS ABSORPTION, TRANSPORT AND UTILIZATION BY WHEAT GENOTYPES UNDER PHOSPHORUS DEFICIENCY |
| title_short | DIFFERENTIAL GROWTH RESPONSE, PHOSPHORUS ABSORPTION, TRANSPORT AND UTILIZATION BY WHEAT GENOTYPES UNDER PHOSPHORUS DEFICIENCY |
| title_sort | differential growth response phosphorus absorption transport and utilization by wheat genotypes under phosphorus deficiency |
| topic | absorption rate relative growth rate transport rate utilization rate wheat genotypes |
| url | https://pjaaevs.sau.edu.pk/index.php/ojs/article/view/310 |
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