The extent of variation in salinity tolerance of the minicore collection of finger millet (Eleusine coracana L. Gaertn.) germplasm

    Krishnamurthy, L and Upadhyaya, H D and Purushothaman, R and Gowda, C L L and Kashiwagi, J and Dwivedi, S L and Singh, Sube and Vadez, V (2014) The extent of variation in salinity tolerance of the minicore collection of finger millet (Eleusine coracana L. Gaertn.) germplasm. Plant Science, 227. pp. 51-59. ISSN 0168-9452

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    Abstract

    Finger millet (Eleusine coracana L. Gaertn.) ranks third in production among the dry land cereals. It is widely cultivated in Africa and South Asia where soil salinization is a major production constraint. It is a potential crop for salt affected soils. To identify salt tolerant germplasm, the minicore finger millet germplasm (n = 80) was screened for grain yield performance in a soil saturated with NaCl solution of 100 or 125 mM. Genotype effect was significant for most traits, while salinity × genotype interaction was significant only in one year. Salinity delayed phenology, marginally reduced shoot biomass and grain yield. There was a large range of genotypic variation in grain yield under salinity and other traits. The yield loss was higher in accessions with prolific growth and yield potential was associated with saline yields. Based on saline yields, accessions were grouped in to four groups and the top tolerant group had 22 accessions with IE 4797 remaining at the top. Salinity had no adverse impact on grain yield of five accessions. Root anatomy in selected genotype of pearl and finger millet showed presence of porous cortex and well fortified endodermis in finger millet that can exclude Na+ and enhance N absorption.

    Item Type: Article
    Divisions: RP-Dryland Cereals
    CRP: CGIAR Research Program on Dryland Cereals
    Uncontrolled Keywords: Abiotic stress, Physiological traits, Root anatomy, Salt stress, Yield reduction
    Subjects: Mandate crops > Millets > Finger Millet
    Depositing User: Mr Siva Shankar
    Date Deposited: 10 Jul 2014 06:46
    Last Modified: 29 Dec 2016 10:34
    URI: http://oar.icrisat.org/id/eprint/8198
    Official URL: http://dx.doi.org/10.1016/j.plantsci.2014.07.001
    Projects: Sustainable conservation and utilization of genetic resources of two underutilized crops - finger millet and foxtail millet - to enhance productivity, nutrition and income in Africa and Asia
    Funders: BMZ/GTZ
    Acknowledgement: This work was supported by the Bundesministerium fürWirtschaftliche Zusammenarbeit und Entwicklung/DeutscheGesellschaft für Technische Zusammenarbeit (BMZ/GTZ) projecton ‘Sustainable conservation and utilization of genetic resourcesof two underutilized crops – finger millet and foxtail millet –to enhance productivity, nutrition and income in Africa andAsia’ funded by the Federal Ministry for Economic Cooperationand Development (BMZ) (81099948), Germany. Expert tech-nical assistance by Mr. N. Jangaiah (ICRISAT) is also greatly acknowledged.
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