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GENOTYPIC AND SPECIES VARIABILITY IN CARBOXYLATE EXUDATION OF WHEAT (Triticum aestivum L.) AND MAIZE (Zea mays L.) IN PHOSPHORUS DEFICIENCY.
- Source :
-
Pakistan Journal of Agricultural Sciences . Jun2020, Vol. 57 Issue 3, p665-674. 10p. - Publication Year :
- 2020
-
Abstract
- Under low phosphorus (P) availability, plants change their root physiology and release more protons and carboxylates to acquire P from residual sources. This ability differs among genotypes. In this situation, P efficient genotypes may be a conceivable way of decreasing the P demand and using applied P efficiently. This study was planned with the objective of screening P efficient wheat and maize genotypes on the basis of carboxylate and proton release under P deficient condition. Five genotypes each of wheat and maize were grown in solution culture with normal and deficient P treatments under CRD (completely randomized design) factorial. At harvest carboxylates, proton and P were analyzed. Results revealed that wheat genotype, SARC-1 and maize genotype, Pioneer-32F10 was better in carboxylate exudation and more release of carboxylates and proton was recorded in these genotypes comparative to other genotypes. Both genotypes also showed better P and phosphorus use efficiency in P deficient treatment compared to normal P treatment. In the case of species, maize roots released more fraction of malate and wheat roots released more fraction of citrate. This genetic difference can be used for the selection of P efficient genotypes for P deficient soils through the breeding process in the future. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CORN
*CULTURE media (Biology)
*WHEAT
*SPECIES
*PHOSPHORUS
*GENOTYPES
Subjects
Details
- Language :
- English
- ISSN :
- 05529034
- Volume :
- 57
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Pakistan Journal of Agricultural Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 144215380
- Full Text :
- https://doi.org/10.21162/PAKJAS/20.9794