Journal
JOURNAL OF PLANT NUTRITION
Volume 41, Issue 10, Pages 1321-1332Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01904167.2018.1450423
Keywords
photosynthetic rate; root acid phosphatase activity; root and shoot morphological traits
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Funding
- Department of Science & Technology, New Delhi, India
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Genotypic variation for morpho-physiological parameters, phosphorus (P) content and root acid phosphatase activity was studied in 52 pigeonpea genotypes. Data related to shoot (length, dry weight, number of leaves, and leaf area), root (volume, length, dry weight, area, perimeter, and number of root tips), acid phosphatase activity, and P content (root, stem, and leaf) were recorded at 60days after sowing (DAS). The P use efficient genotypes showed high root length, root area, root perimeter, root dry weight, P content in leaves, and root to shoot dry weight ratio under the P not added condition. Significant variation was found among genotypes for root- and shoot-associated characteristics under both P treatments. The P use efficient genotypes with improved root morphological phenes have potential to acquire and utilize more P from immobile soil bound P sources may be of additional factor for increasing efficiency of acquisition and utilization of supplied P fertilizer.
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