Salt sensitivity in chickpea (Cicer arietinum L.): ions in reproductive tissues and yield components in contrasting genotypes

Kotula, L and Khan, H A and Quealy, J and Turner, N C and Vadez, V and Siddique, K H and Clode, P L and Colmer, T D (2015) Salt sensitivity in chickpea (Cicer arietinum L.): ions in reproductive tissues and yield components in contrasting genotypes. Plant, Cell & Environment, 38 (8). pp. 1565-1577. ISSN 0140-7791

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Abstract

The reproductive phase in chickpea (Cicer arietinum L.) is affected by salinity, but little is known about the underlying cause. We investigated whether high concentrations of Na(+) and Cl(-) in the reproductive structures influence reproductive processes. Chickpea genotypes contrasting in tolerance were subjected to 0, 35 or 50 mm NaCl applied to soil in pots. Flower production and abortion, pod number, percentage of empty pods, seed number and size were evaluated. The concentrations of Na(+) , K(+) and Cl(-) were measured in various plant tissues and, using X-ray microanalysis, in specific cells of developing reproductive structures. Genotypic variation in reproductive success measured as seed yield in saline conditions was associated with better maintenance of flower production and higher numbers of filled pods (and thus seed number), whereas seed size decreased in all genotypes. Despite the variation in reproductive success, the accumulation of Na(+) and Cl(-) in the early reproductive tissues of developing pods did not differ between a tolerant (Genesis836) and a sensitive (Rupali) genotype. Similarly, salinity tolerance was not associated with the accumulation of salt ions in leaves at the time of reproduction or in seeds at maturity.

Item Type: Article
Divisions: RP-Grain Legumes
CRP: CGIAR Research Program on Grain Legumes
Uncontrolled Keywords: X-ray microanalysis; Genotypic variation; Ovule; Pod wall; Reproductive success; Salinity; Salt tolerance; Tissue K+ Na; Tissue ions; Salt sensitivity; Chickpea
Subjects: Mandate crops > Chickpea
Depositing User: Mr Ramesh K
Date Deposited: 27 Jul 2015 08:13
Last Modified: 21 Oct 2016 06:11
URI: http://oar.icrisat.org/id/eprint/8899
Official URL: http://dx.doi.org/10.1111/pce.12506
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
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