Genotypic Variation in Root Systems of Chickpea (Cicer arietinum L.) across Environments

Ali, M Y and Johansen, C and Krishnamurthy, L and Hamid, A (2005) Genotypic Variation in Root Systems of Chickpea (Cicer arietinum L.) across Environments. Journal Of Agronomy And Crop Science, 191 (6). pp. 464-472. ISSN 0931-2250

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Abstract

Root systems of various chickpea genotypes were studied over time and in diverse environments, – varying in soil bulk density, phosphorus (P) levels and moisture regimes. In a pot study comparing a range of chickpea genotypes, ICC 4958 and ICCV 94916-4 produced higher root length density (RLD) and root dry weight (RDW), which were better expressed under P stress conditions. In two field experiments in soils of intermediate and high soil bulk densities, ICC 4958 also had greater RLD and RDW, particularly under soil moisture stress conditions. The expression of greater rooting ability of ICC 4958 under a wide range of environmental conditions confirms its suitability as a parent for genetically enhancing drought resistance and P acquisition ability. The superiority of ICC 4958 over other genotypes was for root proliferation expressed through RLD. Thus, the variation in RLD can be the most relevant root trait that reflects chickpea's potential for soil moisture or P acquisition

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Uncontrolled Keywords: Cicer arietinum — drought-tolerant genotype — phosphorus —root system
Subjects: Mandate crops > Chickpea
Depositing User: Ms K Syamalamba
Date Deposited: 13 Oct 2011 09:12
Last Modified: 22 Nov 2011 05:09
URI: http://oar.icrisat.org/id/eprint/2419
Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1439-...
Projects: UNSPECIFIED
Funders: International Crops Research Institute for the Semi-Arid Tropics
Acknowledgement: The authors thank the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) for providing funds for experimentation and logistical facilities. The authors thank Dr N. P. Saxena for assisting with the design of the programme and special thanks to Mr M. A. Ghaffar for his technical assistance and ensuring logistic facilities of the experiments conducted at ICRISAT
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